Voice As a Parameter of Emotional and Physical Health Ahmed Abdelal Bridgewater State University, [email protected]

Total Page:16

File Type:pdf, Size:1020Kb

Voice As a Parameter of Emotional and Physical Health Ahmed Abdelal Bridgewater State University, Ahmed.Abdelal@Bridgew.Edu Bridgewater Review Volume 32 | Issue 1 Article 11 May-2013 Voice as a Parameter of Emotional and Physical Health Ahmed Abdelal Bridgewater State University, [email protected] Recommended Citation Abdelal, Ahmed (2013). Voice as a Parameter of Emotional and Physical Health. Bridgewater Review, 32(1), 32-34. Available at: http://vc.bridgew.edu/br_rev/vol32/iss1/11 This item is available as part of Virtual Commons, the open-access institutional repository of Bridgewater State University, Bridgewater, Massachusetts. gender), and is encased within a thin, newborns’ crying/vocalization con- typically produce. Let’s take the case When it involves loudness we call it rubbery, flexible and shiny cover called veys pleasure, comfort or hunger. In of laryngitis, for example, which is an shimmer. These tremors are so tiny that the mucosa/lamina propria. Because the conversation, the meaning of utterances infection of the VFs and surrounding neither speakers nor listeners can detect VFs are positioned on top of the airway, may depend solely on intonation. For laryngeal tissue. Like any type of them. When jitter and shimmer values all the air you breathe in and out must example, one can say the word great infection, laryngitis triggers swelling exceed the norms, that could mean PD, pass between them. These two little several times, conveying excitement, as an immune response, which increases a disease characterized by involuntary muscles guard our lives day and night agreement, disappointment or indiffer- vocal-fold size/weight, thus decreasing tremors that eventually affect the entire to ensure that nothing other than air ence simply by modifying intonation. the vibration rate. Vocal-fold body. Because the VFs are extremely gets into the airway. They enable us to Thus, intonation serves fundamental edges become uneven and fail to valve sensitive, PD shows up in them long sneeze, cough, push, or hold our breath social and linguistic communication the air efficiently. The escaping air before it shows up in the extremities whenever we need to. In addition to functions. If speakers do not vary pitch compromises air pressure below the and the rest of the body. Soon a person these life-preserving functions, the and loudness, and monitor their own VFs (which reduces loudness) and adds will be able to call a phone number, VFs enable us to communicate and to voices, speech becomes monotonous. noise to vocal-fold vibration, thus speak for 30 seconds and know if he/ Voice as a Parameter of Emotional add shades of meaning and emotion The listener’s nervous system soon producing hoarseness and reducing she has early symptoms of PD. The to our voices. shifts into habituation mode and ceases loudness further. experimental phase of testing included to respond to the speaker’s voice as it ten thousand people and PD detection and Physical Health Originating from the same location in ignores the unchanging noises of a dish- A 30-second Voice- rate reached 98.6% accuracy. The next the larynx, inside the Adam’s apple, the washer or a fan. Consequently, our abil- based Test to Diagnose phase is to make the system commer- Ahmed M. Abdelal VFs gradually diverge as they course ity to use intonation depends on both cially available to healthcare specialists This article provides basic information about voice and laryngeal health to fellow educators and posteriorly, and each connects into a Parkinson’s Disease (PD) vocal-fold health and voice control. (see http://www.parkinsonsvoice.org/). professional voice users with the hope that it can make a difference in their lives. I tackle voice little pyramidal cartilage (arytenoid) Voice quality reveals important Vocal pathology that alters pitch and from a multi-dimensional approach integrating research and clinical practice. What follows is in back of the larynx. A paired muscle information about vocal-fold health, loudness compromises one’s ability to Smoking and Other based on extensive research that I have reviewed over the years, on coursework that I have attached to the bases of the arytenoids and can alert us to more serious health verbally convey emotions and attitudes. Things From Which You taught in related areas (including anatomy and physiology of speech, language and hearing; rotates them inward to bring the VFs problems. In July 2012, Dr. Max Little Executive control skills enable speak- phonetics, linguistics, and neurological bases of speech, language and hearing) and on my own in contact with each other. Two other and colleagues at MIT adapted voice- Should Protect Your Voice ers to organize their thoughts, and to experience as a licensed speech language pathologist who has diagnosed and treated patients muscles bring the arytenoids more based technology that has been used by Vocal-fold tissue is extremely delicate constantly monitor their own voices with voice disorders for more than 14 years. tightly together to compress the VFs SLPs for decades to design a new test and susceptible to damage. The VFs can and listeners’ body language. against each other. With the VFs now for PD. Normally vibrating VFs tend be harmed by a variety of allergens (e.g., s we move about our daily lives there are sealed, air pressure builds up beneath What Voice Quality to make very tiny involuntary trem- pollen), noxious gases (as those found many things that we take for granted. Voice them and forces the rubbery edges of and Pitch Reveal about ors in pitch and loudness. When the in paint products and some household is one of them. Voice is an extremely intimate the mucosa open, causing the vibration tremor involves pitch we call it jitter. cleaners) and other environmental A we know as voice. Your Health part of our personalities, as it is intricately tied to our There are many voice-quality descrip- Voice as a Vehicle for nervous systems, especially the circuits responsible for tors including pleasant, husky, breathy, Conveying Emotions hoarse, raspy, strangled, strident and grav- Tips on How to Protect Your Voice and motor execution and emotional processing. For this and Attitudes elly. Voice quality is directly determined Maximize Its Performance by vocal-fold structure and function. • Avoid speaking in noisy situations. This causes you to raise your voice. reason, voice analysis has been widely used in medical A major component of speech is Normal VFs have shiny, moist mucosa the manner in which utterances are • If you suspect you are a loud speaker, get a hearing evaluation. Hearing loss can cause and criminal investigations. Criminal investigators with even, smooth edges. Whether expressed. Normally, speakers depend people to raise their voices. sometimes conduct a voice stress test states, attitudes, agreement or disagree- pitch is high or low depends on vocal- on intonation/melody of speech to to help them determine a suspect’s ment, level of certainly, truthfulness, fold vibration rate per second. The • Avoid tobacco smoke, especially the first-hand kind. add shades of meaning to their utter- credibility. Speech language patholo- deceitfulness, humor, and so on. The greater the vibration rate, the higher the ances. Intonation is achieved by • Space out speaking engagements to avoid putting excessive stress on the VFs, and to gists (SLPs) and ear, nose and throat secret lies in two small, very sensitive pitch, and vice versa. On average, for continuously varying levels of pitch, allow them to rest. doctors (ENTs) conduct voice testing muscles we know as the vocal folds example, a woman’s VFs complete 215 loudness and muscular tension. This to determine if someone has laryngeal (VFs) or vocal cords. vibrations per second, while a man’s • Drink water throughout the day (especially when talking) to ensure adequate vocal- is achieved through constant modifica- pathology. Most recently, voice analysis complete around 125. This explains fold hydration and function. tion of vocal-fold tension and length. has been used as a quick and highly The Vocal Folds Serve why a woman’s pitch is much higher Sometimes intonation is the only tool • Avoid caffeine prior to speaking engagements. Caffeine elevates anxiety and dehy- accurate tool for diagnosing Parkinson’s Life Preservation and than a man’s. These rates, however, used for conveying a message. Children drates the VFs. Disease. We can gather a tremendous are altered in the presence of a cyst, Speech Functions just a few weeks old, for example, learn amount of information about speakers tumor, inflammation, or any mass that • If you experience hoarseness or a gurgly voice while eating, contact an SLP. This could The VFs are positioned within the to use intonation as a means of com- and the messages they are trying to increases vocal-fold weight. A lesion indicate a swallowing disorder. larynx. Each VF ranges from 0.5 to munication. Mothers soon learn what convey through tone of voice. Voice could also compromise loudness and 0.94 of an inch (depending on age and type of pitch accompanying their • If you feel your voice has become less pleasant in tone, seek a voice evaluation. enables us to infer their emotional interfere with the pure tones the VFs 32 Bridgewater Review May 2013 33 gender), and is encased within a thin, newborns’ crying/vocalization con- typically produce. Let’s take the case When it involves loudness we call it rubbery, flexible and shiny cover called veys pleasure, comfort or hunger. In of laryngitis, for example, which is an shimmer. These tremors are so tiny that the mucosa/lamina propria. Because the conversation, the meaning of utterances infection of the VFs and surrounding neither speakers nor listeners can detect VFs are positioned on top of the airway, may depend solely on intonation. For laryngeal tissue. Like any type of them. When jitter and shimmer values all the air you breathe in and out must example, one can say the word great infection, laryngitis triggers swelling exceed the norms, that could mean PD, pass between them.
Recommended publications
  • Part 1: Introduction to The
    PREVIEW OF THE IPA HANDBOOK Handbook of the International Phonetic Association: A guide to the use of the International Phonetic Alphabet PARTI Introduction to the IPA 1. What is the International Phonetic Alphabet? The aim of the International Phonetic Association is to promote the scientific study of phonetics and the various practical applications of that science. For both these it is necessary to have a consistent way of representing the sounds of language in written form. From its foundation in 1886 the Association has been concerned to develop a system of notation which would be convenient to use, but comprehensive enough to cope with the wide variety of sounds found in the languages of the world; and to encourage the use of thjs notation as widely as possible among those concerned with language. The system is generally known as the International Phonetic Alphabet. Both the Association and its Alphabet are widely referred to by the abbreviation IPA, but here 'IPA' will be used only for the Alphabet. The IPA is based on the Roman alphabet, which has the advantage of being widely familiar, but also includes letters and additional symbols from a variety of other sources. These additions are necessary because the variety of sounds in languages is much greater than the number of letters in the Roman alphabet. The use of sequences of phonetic symbols to represent speech is known as transcription. The IPA can be used for many different purposes. For instance, it can be used as a way to show pronunciation in a dictionary, to record a language in linguistic fieldwork, to form the basis of a writing system for a language, or to annotate acoustic and other displays in the analysis of speech.
    [Show full text]
  • Consonants Consonants Vs. Vowels Formant Frequencies Place Of
    The Acoustics of Speech Production: Source-Filter Theory of Speech Consonants Production Source Filter Speech Speech production can be divided into two independent parts •Sources of sound (i.e., signals) such as the larynx •Filters that modify the source (i.e., systems) such as the vocal tract Consonants Consonants Vs. Vowels All three sources are used • Frication Vowels Consonants • Aspiration • Voicing • Slow changes in • Rapid changes in articulators articulators Articulations change resonances of the vocal tract • Resonances of the vocal tract are called formants • Produced by with a • Produced by making • Moving the tongue, lips and jaw change the shape of the vocal tract relatively open vocal constrictions in the • Changing the shape of the vocal tract changes the formant frequencies tract vocal tract Consonants are created by coordinating changes in the sources with changes in the filter (i.e., formant frequencies) • Only the voicing • Coordination of all source is used three sources (frication, aspiration, voicing) Formant Frequencies Place of Articulation The First Formant (F1) • Affected by the size of Velar Alveolar the constriction • Cue for manner • Unrelated to place Bilabial The second and third formants (F2 and F3) • Affected by place of articulation /AdA/ 1 Place of Articulation Place of Articulation Bilabials (e.g., /b/, /p/, /m/) -- Low Frequencies • Lower F2 • Lower F3 Alveolars (e.g., /d/, /n/, /s/) -- High Frequencies • Higher F2 • Higher F3 Velars (e.g., /g/, /k/) -- Middle Frequencies • Higher F2 /AdA/ /AgA/ • Lower
    [Show full text]
  • Nasal Consonant the Basic Characteristic of a Nasal Consonant Is That the Air Escapes Through the Nose
    Nasal Consonant The basic characteristic of a nasal consonant is that the air escapes through the nose. For this to happen, the soft palate must be lowered; in the case of all the other consonants, and all vowels, the soft palate is raised and air cannot pass through the nose, in nasal consonants, hoever, the air does not pass through the mouth; it is prevented by a complete closure in the mouth at some point. /m/ and /n/ are simple , straightforward consonants with distributions like those of the plosives. There is in fact little to describe. However, /η/ is a different matter. It is a sound that gives considerable problems to foreign learners, and one that is so unusual in its phonological aspect that some people argue that it is not one of the phonemes of English at all. There are three phonemes in English which are represented by nasal consonants, /m/ , /n/ and /η/. In all nasal consonants the soft palate is lowered and at the same time the mouth passage blocked at some point, so that all the air pushed out of the nose. /m/ and /n/ All languages have consonants which are similar to / m/ and /n/ in English. Notice: 1- the soft palate is lowered for both /m/ and /n/. 2- for /m/ the mouth is blocked by closing the two lips, for /n/ by pressing the tip of the tongue against the alveolar ridge, and the sides of the tongue against the sides of the palate. 3- Both sounds are voice in English, as they are in other languages, and the voiced air passes out through the nose.
    [Show full text]
  • Acoustic Characteristics of Aymara Ejectives: a Pilot Study
    ACOUSTIC CHARACTERISTICS OF AYMARA EJECTIVES: A PILOT STUDY Hansang Park & Hyoju Kim Hongik University, Seoul National University [email protected], [email protected] ABSTRACT Comparison of velar ejectives in Hausa [18, 19, 22] and Navajo [36] showed significant cross- This study investigates acoustic characteristics of linguistic variation and some notable inter-speaker Aymara ejectives. Acoustic measurements of the differences [27]. It was found that the two languages Aymara ejectives were conducted in terms of the differ in the relative durations of the different parts durations of the release burst, the vowel, and the of the ejectives, such that Navajo stops are greater in intervening gap (VOT), the intensity and spectral the duration of the glottal closure than Hausa ones. centroid of the release burst, and H1-H2 of the initial In Hausa, the glottal closure is probably released part of the vowel. Results showed that ejectives vary very soon after the oral closure and it is followed by with place of articulation in the duration, intensity, a period of voiceless airflow. In Navajo, it is and centroid of the release burst but commonly have released into a creaky voice which continues from a lower H1-H2 irrespective of place of articulation. several periods into the beginning of the vowel. It was also found that the long glottal closure in Keywords: Aymara, ejective, VOT, release burst, Navajo could not be attributed to the overall speech H1-H2. rate, which was similar in both cases [27]. 1. INTRODUCTION 1.2. Aymara ejectives 1.1. Ejectives Ejectives occur in Aymara, which is one of the Ande an languages spoken by the Aymara people who live Ejectives are sounds which are produced with a around the Lake Titicaca region of southern Peru an glottalic egressive airstream mechanism [26].
    [Show full text]
  • Your Speaking Voice
    YOUR SPEAKING VOICE Tips for Adding Strength and WHERE LEADERS Authority to Your Voice ARE MADE YOUR SPEAKING VOICE TOASTMASTERS INTERNATIONAL P.O. Box 9052 • Mission Viejo, CA 92690 • USA Phone: 949-858-8255 • Fax: 949-858-1207 www.toastmasters.org/members © 2011 Toastmasters International. All rights reserved. Toastmasters International, the Toastmasters International logo, and all other Toastmasters International trademarks and copyrights are the sole property of Toastmasters International and may be used only with permission. WHERE LEADERS Rev. 6/2011 Item 199 ARE MADE CONTENTS The Medium of Your Message........................................................................... 3 How Your Voice Is Created .............................................................................. 4 Breath Produces Voice ............................................................................... 4 Production of Voice Quality.......................................................................... 4 What Kind of Voice Do You Have? ....................................................................... 5 Do You Whisper or Boom? ........................................................................... 5 Are You Monotonous or Melodious? ................................................................. 5 Is Your Voice a Rain Cloud or a Rainbow? ............................................................. 5 Do You Have Mumblitis? ............................................................................. 5 How Well Do You Articulate?........................................................................
    [Show full text]
  • Linguistic Voice Quality
    Linguistic voice quality Pat Keating UCLA Linguistics Department back Phonation Phonation: sound production in the larynx, usually by vocal fold vibration (voice, or voicing) How fast the folds vibrate determines front voice pitch; how they move determines voice quality These vary across speakers (people’s voices sound different) and within speakers (individuals can adjust vibration) 2 Ladefoged gif: http://www.linguistics.ucla.edu/faciliti/demos/vocalfolds/vocalfolds.htm Some examples by John Laver - 3 major phonation types Laver modal voice Laver breathy voice Laver creaky voice 3 Cassette with Laver 1980, The Phonetic Description of Voice Quality Phonation types and glottal opening How large is the glottal opening? back 2 vocal folds glottis (space between) front 4 http://pixgood.com/glottis-and-epiglottis.html Ladefoged’s glottal continuum IPA diacritics: a̤ a̰ On the breathy side of modal: lax, slack, or lenis On the creaky side of modal: tense, stiff, fortis, or pressed 5 Ladefoged (1971) Preliminaries to linguistic phonetics Phonation contrasts in languages of the world Many languages contrast phonations on vowels and/or consonants Common especially in SE Asia, the Americas, India 6 UCLA Linguistic Voice Quality project How do phonation types (on vowels) differ within and across languages? This talk: Cross-language comparison of vowel phonation acoustics: What is the overall phonetic space for vowel voice quality? Phonation in tone languages: How do pitch and phonation interact? 7 Our project: 10 languages from four language families Sino-Tibetan Hmong-Mien *Yi (Southern: Xinping & Jiangcheng) *Hmong (White Hmong) lax vs. tense modal vs breathy H-falling tone, crossed with L, M lexical tones creaky L tone, others modal *Bo (Shizong & Xingfucun) – like Yi *Black Miao (Shidong Kou) *Hani (Luchun) – like Yi modal vs breathy M tone, creaky L tone, pressed H tone *Mandarin (Beijing) – creaky tone3 Oto-Manguean Indo-European Mazatec (Jalapa de Diaz) *Gujarati (Standard Mumbai) breathy vs.
    [Show full text]
  • UCLA Working Papers in Phonetics
    UCLA Working Papers in Phonetics Title WPP, No. 107: Acoustic Study of Georgian Stop Consonants Permalink https://escholarship.org/uc/item/63t1324h Author Vicenik, Chad Publication Date 2008-09-30 eScholarship.org Powered by the California Digital Library University of California UCLA Working Papers in Phonetics, No. 107, pp.1-30 An Acoustic Study of Georgian Stop Consonants Chad Vicenik [email protected] Abstract This study investigates the acoustic properties of ejective, voiced and voiceless aspirated stops in Georgian, a Caucasian language, and seeks to answer two questions: (1) which acoustic features discriminate the three stop manners and (2) do Georgian stops undergo initial strengthening, and if so, is it syntagmatic or paradigmatic strengthening? Five female speakers were recorded reading words embedded into carrier phrases and stories. Acoustic measures include closure duration, voicing during the closure, voicing lag, relative burst intensity, spectral moment of bursts, phonation (H1-H2) and f0. Of these, voicing lag, voicing during the closure, mean burst frequency, H1-H2 and f0 could all be used to discriminate stop manner, but stop manners did not differ in closure duration or relative burst intensity. Georgian stops did show initial strengthening and showed only syntagmatic enhancement, not paradigmatic enhancement. Stops showed longer closure durations, longer voicing lags, less voicing during the closure and higher H1-H2 values in higherprosodicpositions. 1. Introduction Georgian, a Caucasian language spoken in Georgia, has three stop manners: voiceless aspirated, voiced and ejective (Shosted & Chikovani2006). Its stop inventory is given below in Table 1. This study examines the stop consonants of Georgian and will look at a number of acoustic measures in order to describe the similarities and differences between ejectives and the other stop manners present in the language.
    [Show full text]
  • Some Characteristics of Oral and Nasal Air Flow During Plosive
    Some Characteristics of Oral and Nasal Air Flow During Plosive Consonant Production FLOYD W. EMANUEL, PH.D. DONALD T. COUNIHAN, PH.D. Oklahoma City, Oklahoma There are little available data concerning the oral and nasal air flow rates that occur in plosive consonants. Isshiki and Ringel (11) reported mean measures of combined oral and nasal air volume expended in the production of normal plosives while Van Hattum and Worth (18) de- scribed the total oral air volume used by normal speakers in selected plosive consonants. Subtelny and associates (17) reported peak oral flow rates for a single plosive, /p/. Yanagihara and Hyde (24) describe the maximum nasal flow rate during production of bilabial plosives. These studies did not, however, report for a substantial number of normal- speaking subjects the peak oral and simultaneous nasal flow rates during plosives. Such data appear to be useful in understanding the aerody- namics of plosive production. The present investigation was concerned with the measurement of oral and nasal air flows that are associated with the utterance of plosive consonants by normal speakers. This study was undertaken not only because such information is basic to an understanding of normal speech, but also because it is relevant to an understanding of articulation dis- turbances that result from deficiencies in oral breath stream regulation. It was anticipated that data derived from normal speakers would pro- vide baseline information against which the performance of subjects with velar pathology might be compared. Method SuBrEcTs. Young normal adults, twenty-five male and twenty-five female, were selected as subjects from among volunteers locally availa- ble.
    [Show full text]
  • Voice] Joshua Ian Tauberer University of Pennsylvania, [email protected]
    View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by ScholarlyCommons@Penn University of Pennsylvania ScholarlyCommons Publicly Accessible Penn Dissertations Fall 12-22-2010 Learning [Voice] Joshua Ian Tauberer University of Pennsylvania, [email protected] Follow this and additional works at: http://repository.upenn.edu/edissertations Part of the First and Second Language Acquisition Commons Recommended Citation Tauberer, Joshua Ian, "Learning [Voice]" (2010). Publicly Accessible Penn Dissertations. 288. http://repository.upenn.edu/edissertations/288 Please see my home page, http://razor.occams.info, for the data files and scripts that make this reproducible research. This paper is posted at ScholarlyCommons. http://repository.upenn.edu/edissertations/288 For more information, please contact [email protected]. Learning [Voice] Abstract The v[ oice] distinction between homorganic stops and fricatives is made by a number of acoustic correlates including voicing, segment duration, and preceding vowel duration. The present work looks at [voice] from a number of multidimensional perspectives. This dissertation's focus is a corpus study of the phonetic realization of [voice] in two English-learning infants aged 1;1--3;5. While preceding vowel duration has been studied before in infants, the other correlates of post- vocalic voicing investigated here --- preceding F1, consonant duration, and closure voicing intensity --- had not been measured before in infant speech. The tudys makes empirical contributions regarding the development of the production of [voice] in infants, not just from a surface-level perspective but also with implications for the phonetics-phonology interface in the adult and developing linguistic systems.
    [Show full text]
  • The Phonetics of Voice1 Marc Garellek, University of California San Diego Chapter in the Routledge Handbook of Phonetics (W
    The phonetics of voice1 Marc Garellek, University of California San Diego Chapter in The Routledge Handbook of Phonetics (W. Katz and P. Assmann, editors) Revised 14th June 2018 1 Introduction This chapter focuses on the phonetics of the voice. The term ‘voice’ is used to mean many different things, with definitions varying both within and across researchers and disciplines. In terms of voice articulation, definitions can vary from the very narrow – how the vocal folds vibrate – to the very broad, where ‘voice’ is essentially synonymous with ‘speech’ – how the vocal folds and all other vocal tract articulators influence how we sound (Kreiman and Sidtis, 2011). In this chapter, I will use the term ‘voice’ to refer to sound produced by the vocal folds, including but not limited to vocal fold vibration. I have chosen to focus only on a narrow conception of the voice in order to constrain the discussion; as we will see, the phonetics of voice – even when it concerns only vocal fold articulation – is remarkably complex and of great relevance to phonetic and linguistic research. In contrast, I will use the term ‘voice quality’ to refer to the percept resulting from the voice: in other words, different vocal fold configurations have specific perceptual ramifications, which we will call changes in voice quality. The distinction between voice and voice quality adopted here is therefore analogous to that made between ‘fundamental frequency (f0)’ and ‘pitch’. Why should we be interested in the phonetics of the voice? Linguists are interested in how specific forms contribute to linguistic meaning; for spoken languages, phonetic and phonological research addresses this goal from the point of view of how sounds contribute to meaning.
    [Show full text]
  • Influence of Fundamental Frequency on Stop-Consonant Voicing Perception
    Influence of fundamental frequency on stop-consonant voicing perception: A case of learned covariation or auditory enhancement? Lori L. Holta) Department of Psychology and Center for the Neural Basis of Cognition, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213 Andrew J. Lotto Department of Psychology, Washington State University, P.O. Box 644820, Pullman, Washington 99164-4820 Keith R. Kluender Department of Psychology, University of Wisconsin—Madison, 1200 West Johnson Street, Madison, Wisconsin 53706 ͑Received 11 August 2000; accepted for publication 16 November 2000͒ For stimuli modeling stop consonants varying in the acoustic correlates of voice onset time ͑VOT͒, human listeners are more likely to perceive stimuli with lower f 0’s as voiced consonants—a pattern of perception that follows regularities in English speech production. The present study examines the basis of this observation. One hypothesis is that lower f 0’s enhance perception of voiced stops by virtue of perceptual interactions that arise from the operating characteristics of the auditory system. A second hypothesis is that this perceptual pattern develops as a result of experience with f 0-voicing covariation. In a test of these hypotheses, Japanese quail learned to respond to stimuli drawn from a series varying in VOT through training with one of three patterns of f 0-voicing covariation. Voicing and f 0 varied in the natural pattern ͑shorter VOT, lower f 0͒, in an inverse pattern ͑shorter VOT, higher f 0͒, or in a random pattern ͑no f 0-voicing covariation͒. Birds trained with stimuli that had no f 0-voicing covariation exhibited no effect of f 0 on response to novel stimuli varying in VOT.
    [Show full text]
  • Introductory Phonology
    9781405184120_1_pre.qxd 06/06/2008 09:47 AM Page iii Introductory Phonology Bruce Hayes A John Wiley & Sons, Ltd., Publication 9781405184120_4_C04.qxd 06/06/2008 09:50 AM Page 70 4 Features 4.1 Introduction to Features: Representations Feature theory is part of a general approach in cognitive science which hypo- thesizes formal representations of mental phenomena. A representation is an abstract formal object that characterizes the essential properties of a mental entity. To begin with an example, most readers of this book are familiar with the words and music of the song “Happy Birthday to You.” The question is: what is it that they know? Or, to put it very literally, what information is embodied in their neurons that distinguishes a knower of “Happy Birthday” from a hypothetical person who is identical in every other respect but does not know the song? Much of this knowledge must be abstract. People can recognize “Happy Birth- day” when it is sung in a novel key, or by an unfamiliar voice, or using a different tempo or form of musical expression. Somehow, they can ignore (or cope in some other way with) inessential traits and attend to the essential ones. The latter include the linguistic text, the (relative) pitch sequences of the notes, the relative note dura- tions, and the musical harmonies that (often tacitly) accompany the tune. Cognitive science posits that humans possess mental representations, that is, formal mental objects depicting the structure of things we know or do. A typical claim is that we are capable of singing “Happy Birthday” because we have (during childhood) internalized a mental representation, fairly abstract in character, that embodies the structure of this song.
    [Show full text]