Wednesday, October 9, 2019
DESTINATION CASE STUDY on Pittsburgh, PA Example | Topics and Well Written Essays - 2500 words
DESTINATION on Pittsburgh, PA - Case Study Example The newspapers found here are the Pittsburgh Post-Gazette and Pittsburgh Tribune Review, which are the two major. It also has 32 radio stations one can tune into and is covered by 5 major television stations. Being on the south Western side of Pennsylvania, this location has 29 colleges and universities. Sporting events are some of the best and always celebrated in this location and thus this city has four major sports teams, Penguins, Steelers, Riverhounds, and Pirates. The Pittsburgh International Airport is cheered as the top five US airports as ranked by Conde Nast Traveler. On average, over 3.9 million people do visit Pittsburgh annually for both business and leisure. It has also been ranked among the top five most livable cities in the editions of Places Rated Almanac. Records show that modern inhabitants of Pittsburgh, PA were many groups of Iroquois and these were later joined by Britons and French traders. Fur traders came to this place in 1700 and this was followed by the building of a post by French soldiers in 1749 since they wanted to secure a route through the waterway from Canada to New Orleans. At some point, Major George Washington travelled to the city as an emissary to give warning to French people to leave and that the British carry out a construction of a fort at the Forks of Ohio where he declared that the site was strategically situated. The French built Fort Duquesne and the British built Fort Prince George, which were both later destroyed. This was later followed by the resurgence of the Britons who later took control of the land in the year 1758, when the French left their fort after the treaty to do so was signed ending the French and Indian War. A state of the art fort was build, Fort Pitt, which was named after the Secretary of State of England, William Pitt. After these events, a small village of Pittsborough started growing around Fort Pitt in 1861 and this was followed by change of name to Pittsburgh. Riverboat building
Tuesday, October 8, 2019
International Product Life Cycle Essay Example | Topics and Well Written Essays - 1000 words
International Product Life Cycle - Essay Example The firm with the innovative product serves the home market first and then exports the product to foreign markets. This point can be clearly supported by the following statement. Many of the products found in the world's markets were originally created in the United States before being introduced and refined in other countries. In most instances, regardless of whether a product is intended for later export or not, innovation is initially designed with an eye to capture the U.S. market, the largest consumer nation. In the second phase, production starts in foreign countries either through licensing or re-engineering of the product. Importing countries in the initial stages, generally, wealthy countries import innovative products gain product familiarity. As product familiarity increases, demand in the foreign markets expands. This attracts more players and results in manufacturing in foreign countries. (Hill W.L) This production in foreign countries slowly replaces exports of the innovative firm. In the third phase, firms manufacturing in foreign countries gain production experience and move down the cost curve. Sometimes they manage to produce the goods at a lower cost than is possible for the innovative firms. ... Of these, only three are U.S. firms, with the rest being from Western Europe, Japan, South Korea, Taiwan, Mexico, Brazil, and Malaysia. In the fourth phase, these foreign firms have adequate product experience and economies of scale to export their products to the innovator's home country. Black-and-white television sets, for example, are no longer manufactured in the United States because many Asian firms can produce them much less expensively than any U.S. firm. Consumers' price sensitivity exacerbates this problem for the initiating country. Some of the key characteristics and features of a product are its quality, styling, and performance. These characteristics are affected by consumer needs, conditions of product use, and ability to buy. The factors that affect product attributes change from country to country. For example, in the US, bicycling is a recreational activity. So buyers want their cycles to be lightweight and have the speed that is essential for rapid touring. However, in Nigeria, the bicycle is often a measure of transportation and customers prefer cycles that are heavy and durable. In Nigeria, speed and lightness are not the criteria for purchase decision-making. Looking at these four phases, one can deduce that in the first phase the product was new. In the second phase, the product was maturing. In the third and fourth phases, the product gets standardized. In phase four, the product becomes a commodity. In this phase, the product is manufactured in less-developed countries and exported to developed countries. Understanding this cycle helps international marketing managers to understand the patterns of international trade and production and helps them in preparing a logistics plan.
Monday, October 7, 2019
How do power relations affect organisational development use case Essay
How do power relations affect organisational development use case study - Essay Example Power, when handled judiciously, is a positive aspect of a social dynamic that creates the core motivating center from which true innovation and achievement can be reached. Power organizes and keeps a group within limits so that it does not branch out into tangents that are counterproductive to focused goals. Foucault rejected the idea that power was an object, but determined that it is an aspect of the negotiation that people make with each other in trying to find their identity. Organisations are a site in which individuals will develop concepts of who they are within that structure, lending that identity to the greater overall identity of the self. Searle, on the other hand, ââ¬Å"argues that social reality exists largely because of the agreement of the people who create itâ⬠(McNiff and Whitehead 2000, p. 104). Therefore, the power relations that are created within an organisation exist in order to create the social structure in which the individual finds a sense of their p urpose within that organisation. Whichever side of the power that a person finds themselves within, the structure sets the stage from which the actions of the social groups find a platform. In examining the concept of power relations in organisations, it is first important to define power and the way in which power influences. Once power is understood, it is essential to understand power relations in order to understand how they fit into organisational development. Looking at the ways in which power is used through management approaches will help to further define the ways in which power relations are relevant to the organisation of a business. The ways in which power is developed and through the methods of management it is used will define the ability for teams and team members to successfully accomplish tasks towards company goals. Defining Power The concept of power, while seemingly simple, is actually a complex notion as observed through social science. Max Weber defined power a s ââ¬Å"the chance of a man or number of men to realize their own will in a communal action even against the resistance of others who are participating in the actâ⬠(Fletcher 2006, p. 37). The representation defines power as the ability to overcome opposition to what is desired by oneââ¬â¢s self or by oneââ¬â¢s social group. Furthermore, it suggests that people will have clearly defined goals and those goals can come into conflict with one another (Fletcher 2006, p. 37). Sociologist Stephen Lukes suggests that power manifests in three different forms. Each of those manifestations operates at a different level of contestation. The first level is one-dimensional power which occurs when one group gains the coercive power to impose their will over another group. An example of this can be seen when a union gets higher wages and benefits when bargaining with a corporation. The union has exerted one-dimensional power over the corporation. Two dimensional power can be seen when one group controls the level of advancement that can be made by another group. In this scenario, not only has the group found a way to impose their desires onto another group, it will prevent it from pursuing their own goals (Fletcher 2006, p. 37). The third type of power is three-dimensional power. This type of power is the most effective power in that it controls conflict before it happens. Third-dimensional power will align goals, values, and desires. In this case ââ¬Å"
Sunday, October 6, 2019
Chapter 6 and ch 9 Article Example | Topics and Well Written Essays - 250 words
Chapter 6 and ch 9 - Article Example The case study has rightly highlighted the plea of an 80-year-old woman, who could not handle the hot coffee properly, resulting in her splitting same on her ankles. The judge has passed the right decision. However, there cannot be any hard rules that can specify the ethical responsibilities to be matched with the product quality, as each individual case is different. This is a case of ââ¬Å"might is rightâ⬠. The bigger companies with huge funds for market promotion use ââ¬Å"slotting feesâ⬠phenomenon as a method to increase their sales volume. However, this keeps the smaller and medium manufacturers out of the competition. On the other hand, the customers who are satisfied with lesser-known brands may not be able to find these products on the shelves of a store. The market economy does not require that bigger sharks eat away the smaller fishes. Instead, it allows the fair competition to grow in a healthy manner. In addition, the established companies may not even try to improve their product quality as they ensure their increased sales through such
Saturday, October 5, 2019
Entrepreneurship choose one of two questions to write ) Essay
Entrepreneurship choose one of two questions to write ) - Essay Example They also take risks and engage other individuals in implementing ideas. The individuals who develop such ideas posses appropriate characteristics and behaviours for the development and success of a business. These qualities range from creativity, persistent, risk-taking, influence, time management and leadership qualities. An entrepreneur is responsible for the success of the business and any failures result to business closure or a reduction in profits. Various theories and laws define entrepreneurship in the economic world (Bygrave and Zacharakis, 2010). The resonant alternative entrepreneurship theories explain its various aspects including uniqueness, personality, and creativity. The alternative theories are also useful in explaining various elements that facilitate effective business development. The alternate arguments for entrepreneurship describe entrepreneurs and their involvement in business development. The theories focus on either individual entrepreneurs or recognition of opportunities. Most of the alternative assumptions reflect essential entrepreneurial phenomena such as the entrepreneur, the decision-making process and the nature of business opportunities (Alvarez, 2005). The alternative approach to entrepreneurship is an excellent avenue to establishing various elements regarding innovation and contemporary entrepreneurship. They are further useful in explaining the development of successful entrepreneurship characteristics. The alternative theories explain how the uniqueness of entrepreneurs influences their success in implementing business ideas. The applications and the impact of these theories reflect on the individual characteristics of entrepreneurs. The entrepreneurship alternative theories include the discovery and the creative theories (Bygrave and Zacharakis, 2010). The discovery theory entails discovery, existence and exploitation of opportunities, and individual influence. The theory comprises of three different
Friday, October 4, 2019
Blood Brothers Essay Example for Free
Blood Brothers Essay In the three plays I have read by Willy Russell, all of them are linked by the fact that they all contain an aspect of social inequality. Russell uses humour in all these plays to show serious messages, mostly through stereotypes. In every play there are two very contrasting social groups, each figure-headed by certain characters in the stories. For example, in Blood Brothers, Mickey figureheads the working class society like Rita does in Educating Rita, and the children do in Our Day Out. Whereas Eddie figureheads the middle class society in Blood Brothers, Frank does in Educating Rita, and Mr. Briggs does in Our Day Out. We found that the people from the working class backgrounds were all very broad scoucers, who tended to use slang words such as ciggie and chippie. They were what you would call a very typical stereotype of a broad liverpudlian. Most of them had problems aswell. For instance, Mickey in Blood Brothers has family problems because he has many older siblings which means he gets a lot of hand-me-down clothes and gets bullied by his older brother Sammy who breaks his toys. Rita in Educating Rita has many conflicts with her husband Denny who doesnt want her to carry on with her tuition from Frank. She wants to be educated so that she can have choices. As the play progresses and Rita becomes more educated she begins to make her own decisions, she moves out of her house, ends her relationship with Denny and says I might even have a baby The people from the middle class backgrounds however were made to look rather different. Eddie in Blood Brothers doesnt have to share his toys with brothers or sisters like Mickey does, and his mother doesnt have to worry about financial problems because they have quite a lot of money. The men that were from the middle class backgrounds (Mr. Briggs and Frank) both wore suits and seemed to be well educated, living a comfortable lifestyle. This society of people in the stories tended to speak more formally using words such as What in the world is being off ones cake? Eddie is brought up to speak correctly and not use colloquialisms. In Blood Brothers Micky asks him what a dictionary is and Eddie replies It is a book which tells you the meaning of words. I think Russell makes the social classes seem so very different to one another in each play, so that when they come together there is a lot of humour, but also a lot of tension between them because neither social class really understand each other. This forms a rich and poor type of scenario for all three plays. In Educating Rita Frank is a rich lecturer and Rita is a poor university student who has bad problems with her husband at home. In Our Day Out there is a similar contrast between Mr. Briggs the, well-spoken teacher, and the children who come from a poor, run-down area. These rich and poor scenarios are serious messages that Russell conveys in all three plays. Interestingly enough though, it is the people from the middle class backgrounds that turn out to be the most strange of the two societies. Frank in Educating Rita has a drink addiction, yet has a comfortable lifestyle and is on a stable income. Mr. Briggs doesnt like the children at the school where he works because they are less fortunate than himself, he says most of them were rejects on the day they were born. Eddies adopted mother in Blood Brothers, Mrs. Lyons, is supersticious and unhappy. Quote: The shoes! The shoes! On the table! Get them off! Get them off! Frank and Mr. Briggs are in many ways the same, they both wear suits and dress smartly, they both have similar lifestyles and they both have some sort of problem (i. e. the drink and the hatred for people less fortunate than him). This is where I think that Blood Brothers is different, it doesnt contain a male character as old as Frank or Mr. Briggs who appears often in the story. Whereas the conversations between adult and youth in the other stories are mainly comical, like in Our Day Out when the two lads are caught smoking at the back of the bus, in Blood Brothers they are more intense. I think Blood Brothers on the whole is more intense. In Blood Brothers Russell uses a narrator drifting in and out of the play at certain times, saying daunting things about the scene that has just happened, or is going to happen. I believe this represents the devil and is a good way of creating an eerie tension, because he moves to different places on the stage in the play, and you never see his whole face or body, he is always in the shadows. There are no narrators in the two other plays but dramatic devices also take on the form of dramatic irony. In Blood Brothers this is shown by the two twins not knowing they are twins, when they first become friends. Later in the story when they find out they were born on the same day That means we can be blood brothers the audience can see what is happening, they are going to eventually find out that they are real brothers, and there will be a big disaster because of this. Our Day Out shows dramatic irony when the bus driver is told the children cant afford sweets or lemonade lemonade never touches their lips but when the driver turns around they all are munching on chocolate bars! Later on their journey the bus stops at a sweet shop and the audience sees the shopkeepers talking about raising the prices of the goods in their shop Can I help inflation? The audience now know that the shopkeepers are going to raise their prices, but the children dont. The children get their revenge for being ripped off. They all squeeze into the shop and each time the shopkeepers turn their backs to collect more sweets from the shelves, the kids pocket anything in front of them. The two shopkeepers are oblivious to the stealing taking place until the coach leaves and they realise no money from the till has changed hands Thievin little bastards! shouts one of the shopkeepers. Russell also uses the influence of song in Blood Brothers and Our Day Out to show the mood and feelings of the characters as the play progresses. At the beginning of Blood Brothers Mrs. Johnston is seen dancing in a pub singing a song with the lines Oh we went dancing. in the chorus. As the play continues she occasionally sings this line but at a tempo which reflects the mood of the play itself. In Our Day Out the songs are cheerful and uplifting Were off, were off, were off in a motor car. The themes of the three plays are all linked in many ways. As I have said before, social inequality connects all three, another is the fact they are all set in and around Liverpool with some of the characters in each play speaking with a very broad Liverpudlian accent. Finally, the last one is that they all contain an aspect concerning death. I. e. In Blood Brothers, Mickey and Eddie, in Educating Rita, Ritas flatmate tries to commit suicide, and in Our Day Out one of the pupils called Carol also attempts to kill herself Try an get me an Ill jump over. I believe that Willy Russell features the aspects of social inequality, hatred, death, abuse, love, irony and humour in each play because he knows they have a hard-hitting impact on the audience. Also I think it is because at some time in his life he has been affected significantly by them and so, involves them in something which he can express his feelings and emotions at. Writing.
Thursday, October 3, 2019
Overview Of Vowels And Consonants
Overview Of Vowels And Consonants Language is an organization of sounds, of vocal symbols-the sounds produced from the mouth with the help of various organs of speech to convey some meaningful message. Language has a very important social purpose, because it is mainly used for linguistic communication. It is the most powerful, convenient and permanent means and form of communication. A language can be used in two ways for the purposes of communication. It can be spoken or written but the medium of speech is more important than writing. This is because speech comes first in the history of any language community in fact, it came centuries before writing in the history of any language community. Secondly, speech comes first in the history of any individual. We started speaking long before we started writing. Speech as a medium of communication is used much more than the medium of writing. I n every language, a letter of the alphabet represents a particular sound. Lastly, modern technology has contributed tremendously t o the importance of speech- modern inventions like the telephone, the radio, the tape recorder and several such devices have raised problems of communication primarily concerned with speech. Linguistics is a systematic study of language. Phonetics is a branch of linguistics and it is the branch dealing with the medium of speech. It deals with the production, transmission and reception of the sounds of human speech. For the production of speech sounds, we need an air-stream mechanism. There are three main air-stream mechanisms, such as, pulmonic, glottalic and velaric air-stream mechanisms. When the air-stream mechanism is used to push out, it is called egressive and when it is used to draw air in, it is called ingressive. Most sounds of most languages in the world are produced with a pulmonic egressive air-stream mechanism. The author described in detail the various organs that are responsible for converting the lung-air into speech sounds before it escapes into the outer atmosphere. For instance, if we say a prolonged ssss, a prolonged zzzz, a prolonged ffff and a prolonged vvvv, we see at once two things. We recognize these as speech sounds because these sounds occur i n the various words we use in our English speech. The other thing we notice is that each one of these sounds is different from the others. Speech sounds are very broadly divided into two categories, namely, Vowels and Consonants. If we say the English word shoe, we realize that this word is made up of two sounds, one represented by the letters sh and the other represented by the letters oe. When we produce the sound represented by the letters sh slowly, we realize that during the production of this sound, the air escapes through the mouth with friction. On the other hand, when we produce the sound represented by the letters oe, the air escapes through the mouth freely and we do not hear any friction. The sound is represented by the letters sh in the word shoe is a consonant and the sound represented by the letters oe in the word shoe is a vowel. All sounds during the production of which we hear friction are consonants, but not all consonants are produced with friction. If we say the words, she, shoe, shy, show, ship and shout, we will realize that when we produce the sounds represented by the letters e, oe, y, ow, i and ou in these words, the air escapes through the mouth freely without any friction. All these sounds are therefore vowels but each one of them sounds different from the others. These sounds should therefore be sub-classified. Similarly, if we say the words shoe, see, zoo and who, we will hear friction during the production of the sounds represented by the letters sh, s, z and wh. All these sounds are therefore consonants. But once again, we will see that each of them sounds different from the others. The sounds that are called consonants also need to be sub-classified. Description of Consonants: The word consonant has been derived from the Greek word consonautem, which means the sound produced with the help of some other sound (vowel). A consonant is usually described, taking into account whether it is voiceless or voiced, its place of articulation and its manner of articulation. Manner of articulation refers to the stricture involved and plosive, affricate, nasal, fricative, etc; are labels given to consonants according to their manner of articulation. Place of articulation just means the two articulators involved in the production of a consonant. Consonants can be described according to their places of articulation. The label used is normally an adjective derived from the name of the passive articulator. The places of articulation that we frequently come across are bilabial, labio-dental, dental, alveolar, post-alveolar, palato-alveolar, retroflex, palatal, velar, uvular and glottal. The classification of sounds into vowels and consonants is customary irrespective of phonetic, phonological, or orthographic references. The current classification following Pike divides the sounds into vocoids (vowel sounds), contoids (consonant sounds) and semi-vocoids or semi-contoids (for example; /w/ and /j/ in English). The terms contoids and vocoids refer to phonetic form only, without any reference to phonological function. A vocoid, according to Pike, is a segment formed with an open approximation of the articulators, with or without a velic closure, and with central passage or air-stream. All other segments are contoids. In English, there can be syllabic vocoids, non-syllabic vocoids, syllabic contoids and non-syllabic contoids. Syllabic vocoids are all vowel sounds; they function as syllable nuclei. Phonetically, the vocoids are vowels and their phonological function is that of a syllabic vocoid. Non-syllabic vocoids are the sounds which are phonetically vocoids but phonologically are contoids. Syllabic contoids are the sounds which are phonetically contoids but their phonological function is that of syllabic nucleus, that is, they represent the V element in the structure of a syllable. Non-syllabic contoids are the sounds that phonetically are contoids and phonologically represent the C element in the structure of a syllable. A description of consonantal sounds, according to A.C.Gimson, must provide answers to the following questions:- Is the air-stream set in motion by the lungs or by some other means (pulmonic or non-pulmonic)? Is the air-stream forced outwards or sucked inwards (egressive or ingressive)? Do the vocal cords vibrate or not (voiced or voiceless)? Is the soft palate raised or lowered? Or, does the air pass through the oral cavity (mouth) or the nasal cavity (nose)? At what point or points and between what organs does the closure or narrowing take place (Place of articulation)? What is the type of closure or narrowing at the point of articulation (Manner of articulation)? Thus, the description of a consonant will include five kinds of information: 1.) The nature of air-stream mechanism, 2.) The state of the glottis, 3.) The position of the soft palate, 4.) The articulators involved- the active articulator and the passive articulator and 5.) The nature of stricture involved regarding its production. The Nature of Air-Stream Mechanism: All English sounds, vowels as well as consonants, are produced with a Pulmonic egressive air-stream mechanism, that is, the lung-air pushed out. The State of the Glottis: Speech sounds can be classified as voiceless or voiced, depending upon whether the vocal cords are wide apart and the glottis is wide open (voiceless) or the vocal cords are kept loosely together and they vibrate (voiced). The Position of the Soft Palate: Speech sounds can be classified as oral or nasal, depending upon whether the soft-palate is raised so as to shut off the nasal passage of air (oral) or it is lowered to open the nasal passage of air simultaneously with an oral closure (nasal). Sounds can also be nasalised. The Articulators Involved-the Active and Passive Articulators: Of the various articulators described in the chapter, at least two are required for the production of any speech sound; some articulators move during the production of speech sounds. These are termed as active articulators. Certain other articulators remain passive and the active articulators move in the direction of these. These are termed as passive articulators. The Nature of Stricture Involved: The term stricture refers to the way in which the passage of air is restricted by the various organs of speech. The stricture may be one of complete closure, that is, the active and passive articulators come into firm contact with each other, thus preventing the lung-air from escaping through the mouth. Simultaneously, there is a velic closure, that is, the soft palate is raised, thereby shutting off the nasal passage of air. Thus, the lung-air is blocked in the mouth. When the oral closure is released, that is, when the active articulator is suddenly removed from the passive articulator, the air escapes with a small explosive noise. Sounds produced with a stricture of complete closure and sudden release are called plosives. If the active articulator is removed slowly from the passive articulator, instead of the explosive noise that is characteristic of plosive consonants, friction will be heard. Description of Vowels: Vowels may be defined with an open approximation without any obstruction, partial or complete, in the air passage. They are referred to as vocoids in phonetics. They can be described in terms of three variables: Height of tongue. Part of the tongue which is raised or lowered. Lip-rounding. So vocoids are normally classified according to these three criteria: tongue-height (high, mid, low, or close, half-close, half-open and open), tongue-advancement (front, central, back) and lip-rounding (rounded and unrounded). In order to describe the vowels, we usually draw three points in the horizontal axes: front, central and back, referring to the part of the tongue which is the highest. So, we have : Front vowels, during the production of which the front of the tongue is raised towards the hard palate. For example; / i, i: , e: , a / in Hindi, and / i, i: , e , à ¦ / in English as in sit, seat, set, and sat respectively. Back vowels, during the production of which the back of the tongue is raised towards the soft palate. For example; / o: , u , u: ,/ in Hindi, and / a: , Ãâ°Ã¢â¬ , Ãâ°Ã¢â¬ Ãâ¹Ã , u , u: / in English as in cart, cot, caught, book and tool respectively. Central vowels, during the production of which the central part of the tongue ( the part between the front and the back) is raised. For example; / Ãâ°Ã¢â ¢ / in Hindi, and / Ãâ°Ã¢â ¢ , Ãâ°Ã¢â ¢: , ÃÅ Ã
â / in English as in about, earth and but respectively. O n the vertical axis, we usually draw four points: close, half-close, half-open, and open. They are also referred to as high, high mid, mid (middle), low mid, and low by some phoneticians, especially the American phoneticians. On the basis of the vertical axes, we have the following types of vowels. A close vowel is one for which the tongue is as close to the roof of mouth as possible. For example; / i: / in sea and / u: / in zoo. An open vowel is one which is produced with the tongue as low as possible and the jaws are wide open. For example, / a: / in card and / Ãâ°Ã¢â¬ / in hot. We can describe a vowel by using a three term label, indicating the height, the direction (advancement) of the tongue, and the position of the lips. For example; / a: / in the English word, arm, back, open, unrounded vowel. / Ãâ°Ã¢â¬ / in the English word, hot, back, open, rounded vowel. / i: / in the English word, need, front, close, unrounded vowel. / u / in the English word, tooth, back, close, rounded vowel. To describe the vowel sound, we mention whether it is open or close, half-close or half-open, front or back or central, long or short, whether the tongue is tense or lax while the vowel is being pronounced, and whether lips are spread, neutral, open rounded, or close rounded. All English vowels are voiced. So, for every vowel, we must state that it is voiced. Hence, to sum up, the main point of a language is to convey information. Nowadays, language can take various forms. It can be spoken or written. Peter Ladefoged also talked in his book that speech is the common way of using language. Another aspect of speech that is not part of language is the way speech conveys information about the speakers attitude to life, the subject under discussion and the person spoken to. The final kind of non-linguistic information conveyed by speech is the identity of the speaker. You can often tell the identity of the person who is speaking without looking at them. But then again, we may be wrong. Whenever we speak, we create a disturbance in the air around us, a sound wave, which is a small but rapid variation in air pressure spreading through the air. Speech sounds such as vowels can differ in pitch, loudness and quality. We can say the vowel a as in father on any pitch within the range of our voice. We can also say it softly or loudly without altering the pitch. And we can say as many different vowels as we can, without altering either the pitch or the loudness. The pitch of the sound depends on the rate of repetition of the changes in air pressure. The loudness of the sound depends on the size of the variations in air pressure. The third way in which sounds can differ is in quality, sometimes called timbre. The vowel in see differs in quality from the first vowel in father., irrespective of whether it also differs in pitch or loudness. Thus, Peter Ladefoged in his book has discussed the principal constraints on the evolution of the sounds of the worlds languages, which are ease of articulation, auditory distinctiveness, and gestural economy. He also discussed the differences between speech and language, and has also outlined some of the main acoustic distinctions among sounds; and how one of the acoustic distinctions, that corresponding to pitch, is used in the worlds languages.
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