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Voice Quality Symbols

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Voice Quality Symbols

Voice Quality Symbols (VoQS) are a set of phonetic symbols used to transcribe disordered speech for what in speech pathology is known as "voice quality". This phrase is usually synonymous with phonation in phonetics, but in speech pathology encompasses secondary articulation as well.

VoQS symbols are normally combined with curly braces that span a section of speech, just as with prosody notation in the extended IPA (extIPA). In fact, they started off as part of extIPA before being split off. The symbols may be modified with a digit to convey relative degree of the quality. For example, ⟨V!⟩ is used for harsh voice, and {3V! ... 3V!} indicates that the intervening speech is very harsh. ⟨⟩ indicates a lowered larynx. Thus, {L̞1V! ... 1V!L̞} indicates that the intervening speech is less harsh with a lowered larynx.

VoQS use mostly IPA or extended IPA diacritics on capital letters for the element being modified: V for 'voice'/articulation, L for 'larynx', and J for 'jaw'. Degree is marked 1 for slight, 2 for moderate, and 3 for extreme.

The following combinations of letters and diacritics are used. They indicate an airstream mechanism, phonation or secondary articulation across a stretch of speech. For example, 'palatalized voice' indicates palatalization of all segments of speech spanned by the braces.

Several of these symbols may be profitably used as part of single speech sounds, in addition to indicating voice qualities across spans of speech. For example, [ↀ͡r̪͆ː] is blowing a raspberry. [ɬ↓ʔ] is the l* sound in Damin while [{↓ ... ↓}] is a string of ingressive speech.

The airstream mechanism is the process for generating the flow of air required for speech.

The four primary phonation types, other than voiceless, each receive a distinct letter:

Modifications are made with diacritics. The terms "whispery voice" and "breathy voice" follow Catford (1977) and differ from the vocabulary of the IPA, with VoQS "whispery voice" being equivalent to IPA "breathy voice" / "murmur". The notations {Ṿ} and {V̤} are therefore often confused, and {V̤} should perhaps be used for VoQS "whispery voice" with e.g. {Vʱ} for VoQS "breathy voice".

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