Modal voice

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Modal voice is the vocal register used most frequently in speech and singing in most languages. It is also the term used in linguistics for the most common phonation of vowels. The term "modal" refers to the resonant mode of vocal folds; that is, the optimal combination of airflow and glottal tension that yields maximum vibration. [1] [ page needed ]

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In linguistics, modal voice is the only phonation found in the vowels and other sonorants (consonants such as m, n, l, and r) of most of the languages of the world, but a significant minority contrasts modal voice with other phonations. Among obstruents (consonants such as k, g, t͡ʃ/ch, d͡ʒ/j, s, and z), it is very common for languages to contrast modal voice with voicelessness, but in English, many supposedly-voiced obstruents do not usually have modal voice. [1]

In speech pathology, the modal register is one of the four identifiable registers within the human voice. It is above the vocal fry register and overlapping the lower part of the falsetto register. That view is also adopted by many vocal pedagogists, but some vocal pedagogists may view vocal registration differently. In singing, the modal register may also overlap part of the whistle register. A well trained singer or speaker can phonate two octaves or more within the modal register with consistent production, beauty of tone, dynamic variation, and vocal freedom. [2] The modal register begins and ends in different places within the human voice. The placement of the modal register within the individual human voice is one of the key determining factors in identifying vocal type. [3]

Physiological process

In the modal register, the length, the tension, and the mass of the vocal folds are in a state of flux which causes the frequency of vibration of the vocal folds to vary. [3] As pitch rises, the vocal folds increase in length and in tension, and their edges become thinner. If a speaker or singer holds any of the three factors constant and interferes with the progressive state of change, the laryngeal function of the voice becomes static and eventually breaks occur, resulting in obvious changes in vocal quality.

While some vocal pedagogists identify such breaks as register boundaries or transition areas between registers, other vocal pedagogists maintain that the breaks are a result of vocal problems caused by a static laryngeal adjustment that does not permit the necessary changes to take place within the modal register. [2]

Vocal fold, scheme Vocal fold scheme.svg
Vocal fold, scheme
Glottal cycle, modal voice Vocal fold animated.gif
Glottal cycle, modal voice

On the lower pitches in the modal register, the vocal folds are thick and wedge-shaped. Because of the thickness, large portions of the opposing surfaces of the vocal folds are brought into contact, and the glottis remains closed for a considerable time in each cycle. The glottis opens from the bottom first before it opens at the top, which imparts a fluid, wavelike motion to the cords. The modal voice has a broad harmonic spectrum, rich in overtones, because of the rolling motion of the cords. It is comparatively loud to the other vocal registers because of the vibratory energy present, but it is capable of dynamic variation. [4]

For the lowest tones, only the thyroarytenoid muscles are active, but as the pitch rises, the cricothyroids enter the action, which begins to lengthen the folds. As longitudinal tension increases, the glottis tends to develop a gap in the middle. To counteract the tendency, the lateral cricoarytenoids are brought into action, pulling forward on the muscular process of the arytenoids. The process is sometimes referred to as medial compression. [5]

In addition to the stretching of the vocal folds and the increasing tension on them as the pitch rises, the opposing surfaces of the folds, which may be brought into contact, becomes smaller and smaller, as the edges of the folds become thinner. The basic vibratory or phonatory pattern remains the same, with the whole vocal fold still involved in the action, but the vertical excursions are not as large and the rolling motion is not as apparent as it was on the lower pitches of the modal register. [6]

The physical limits of muscular strength of the internal thyroarytenoids or vocalis muscle are being approached. To sing or speak above this pitch level, the voice must adopt a new phonatory pattern to change registers. [2]

See also

Related Research Articles

Breathy voice is a phonation in which the vocal folds vibrate, as they do in normal (modal) voicing, but are adjusted to let more air escape which produces a sighing-like sound. A simple breathy phonation,, can sometimes be heard as an allophone of English between vowels, such as in the word behind, for some speakers.

<span class="mw-page-title-main">Phonetics</span> Study of the sounds of human language

Phonetics is a branch of linguistics that studies how humans produce and perceive sounds, or in the case of sign languages, the equivalent aspects of sign. Linguists who specialize in studying the physical properties of speech are phoneticians. The field of phonetics is traditionally divided into three sub-disciplines based on the research questions involved such as how humans plan and execute movements to produce speech, how various movements affect the properties of the resulting sound, or how humans convert sound waves to linguistic information. Traditionally, the minimal linguistic unit of phonetics is the phone—a speech sound in a language which differs from the phonological unit of phoneme; the phoneme is an abstract categorization of phones, and it is also defined as the smallest unit that discerns meaning between sounds in any given language.

The term phonation has slightly different meanings depending on the subfield of phonetics. Among some phoneticians, phonation is the process by which the vocal folds produce certain sounds through quasi-periodic vibration. This is the definition used among those who study laryngeal anatomy and physiology and speech production in general. Phoneticians in other subfields, such as linguistic phonetics, call this process voicing, and use the term phonation to refer to any oscillatory state of any part of the larynx that modifies the airstream, of which voicing is just one example. Voiceless and supra-glottal phonations are included under this definition.

In phonetics, a plosive, also known as an occlusive or simply a stop, is a pulmonic consonant in which the vocal tract is blocked so that all airflow ceases.

<span class="mw-page-title-main">Vocal cords</span> Folds of throat tissues that help to create sounds through vocalization

In humans, the vocal cords, also known as vocal folds, are folds of throat tissues that are key in creating sounds through vocalization. The size of vocal cords affects the pitch of voice. Open when breathing and vibrating for speech or singing, the folds are controlled via the recurrent laryngeal branch of the vagus nerve. They are composed of twin infoldings of mucous membrane stretched horizontally, from back to front, across the larynx. They vibrate, modulating the flow of air being expelled from the lungs during phonation.

In linguistics, voicelessness is the property of sounds being pronounced without the larynx vibrating. Phonologically, it is a type of phonation, which contrasts with other states of the larynx, but some object that the word phonation implies voicing and that voicelessness is the lack of phonation.

<span class="mw-page-title-main">Human voice</span> Sound made by a human being using the vocal tract

The human voice consists of sound made by a human being using the vocal tract, including talking, singing, laughing, crying, screaming, shouting, humming or yelling. The human voice frequency is specifically a part of human sound production in which the vocal folds are the primary sound source.

<span class="mw-page-title-main">Larynx</span> Voice box, an organ in the neck of amphibians, reptiles, and mammals

The larynx, commonly called the voice box, is an organ in the top of the neck involved in breathing, producing sound and protecting the trachea against food aspiration. The opening of larynx into pharynx known as the laryngeal inlet is about 4–5 centimeters in diameter. The larynx houses the vocal cords, and manipulates pitch and volume, which is essential for phonation. It is situated just below where the tract of the pharynx splits into the trachea and the esophagus. The word 'larynx' comes from the Ancient Greek word lárunx ʻlarynx, gullet, throat.ʼ

The field of articulatory phonetics is a subfield of phonetics that studies articulation and ways that humans produce speech. Articulatory phoneticians explain how humans produce speech sounds via the interaction of different physiological structures. Generally, articulatory phonetics is concerned with the transformation of aerodynamic energy into acoustic energy. Aerodynamic energy refers to the airflow through the vocal tract. Its potential form is air pressure; its kinetic form is the actual dynamic airflow. Acoustic energy is variation in the air pressure that can be represented as sound waves, which are then perceived by the human auditory system as sound.

<span class="mw-page-title-main">Singing</span> Act of producing musical sounds with the voice

Singing is the act of creating musical sounds with the voice. A person whose profession is singing is called a singer, artist or vocalist. Singers perform music that can be sung with or without accompaniment by musical instruments. Singing is often done in an ensemble of musicians, such as a choir. Singers may perform as soloists or accompanied by anything from a single instrument up to a symphony orchestra or big band. Different singing styles include art music such as opera and Chinese opera, Indian music, Greek music, Japanese music, and religious music styles such as gospel, traditional music styles, world music, jazz, blues, ghazal, and popular music styles such as pop, rock, and electronic dance music.

Falsetto is the vocal register occupying the frequency range just above the modal voice register and overlapping with it by approximately one octave.

Head voice is a term used within vocal music. The use of this term varies widely within vocal pedagogical circles and there is currently no one consistent opinion among vocal music professionals in regard to this term. Head voice can be used in relation to the following:

<span class="mw-page-title-main">Vocal register</span> Range of tones a certain voice type can reliably produce

A vocal register is a range of tones in the human voice produced by a particular vibratory pattern of the vocal folds. These registers include modal voice, vocal fry, falsetto, and the whistle register. Registers originate in laryngeal function. They occur because the vocal folds are capable of producing several different vibratory patterns. Each of these vibratory patterns appears within a particular range of pitches and produces certain characteristic sounds.

In linguistics, a distinctive feature is the most basic unit of phonological structure that distinguishes one sound from another within a language. For example, the feature [voice] distinguishes the two bilabial plosives: [p] and [b]. There are many different ways of defining and arranging features into feature systems: some deal with only one language while others are developed to apply to all languages.

Harsh voice, also called ventricular voice or pressed voice, is the production of speech sounds with a constricted laryngeal cavity, which generally involves epiglottal co-articulation. Harsh voice includes the use of the ventricular folds to damp the glottis in a way similar to what happens when a person talks while lifting a heavy load, or, if the sound is voiceless, like clearing one's throat. It contrasts with faucalized voice, which involves the expansion of the larynx.

Chest voice is a term used within vocal music. The use of this term varies widely within vocal pedagogical circles and there is currently no one consistent opinion among vocal music professionals in regard to this term. Chest voice can be used in relation to the following:

<span class="mw-page-title-main">Vocal pedagogy</span> Study of the art and science of voice instruction

Vocal pedagogy is the study of the art and science of voice instruction. It is used in the teaching of singing and assists in defining what singing is, how singing works, and how proper singing technique is accomplished.

Vocal resonance may be defined as "the process by which the basic product of phonation is enhanced in timbre and/or intensity by the air-filled cavities through which it passes on its way to the outside air." Throughout the vocal literature, various terms related to resonation are used, including: amplification, filtering, enrichment, enlargement, improvement, intensification, and prolongation. Acoustic authorities would question many of these terms from a strictly scientific perspective. However, the main point to be drawn from these terms by a singer or speaker is that the result of resonation is to make a better sound, or at least suitable to a certain esthetical and practical domain.

Histology is the study of the minute structure, composition, and function of tissues. Mature human vocal cords are composed of layered structures which are quite different at the histological level.

<span class="mw-page-title-main">Oral skills</span>

Oral skills are speech enhancers that are used to produce clear sentences that are intelligible to an audience. Oral skills are used to enhance the clarity of speech for effective communication. Communication is the transmission of messages and the correct interpretation of information between people. The production speech is insisted by the respiration of air from the lungs that initiates the vibrations in the vocal cords. The cartilages in the larynx adjust the shape, position and tension of the vocal cords. Speech enhancers are used to improve the clarity and pronunciation of speech for correct interpretation of speech. The articulation of voice enhances the resonance of speech and enables people to speak intelligibly. Speaking at a moderate pace and using clear pronunciation improves the phonation of sounds. The term "phonation" means the process to produce intelligible sounds for the correct interpretation of speech. Speaking in a moderate tone enables the audience to process the information word for word.

References

  1. 1 2 Ladefoged, Peter; Maddieson, Ian (1996). The Sounds of the World's Languages. Oxford: Blackwell. ISBN   0-631-19815-6.
  2. 1 2 3 McKinney, James (1994). The Diagnosis and Correction of Vocal Faults. Genovex Music Group. ISBN   978-1-56593-940-0.
  3. 1 2 Large, John (February–March 1972). "Towards an Integrated Physiologic-Acoustic Theory of Vocal Registers". NATS Bulletin. 28: 30–35.
  4. Van den Berg, J.W. (December 1963). "Vocal Ligaments versus Registers". NATS Bulletin. 19: 18.
  5. Vennard, William (1967). Singing: The Mechanism and the Technic. Carl Fischer. ISBN   978-0-8258-0055-9.
  6. Greene, Margaret; Lesley Mathieson (2001). The Voice and its Disorders (6E ed.). John Wiley & Sons. ISBN   978-1-86156-196-1.

Sources