A resource for speech pathologists
 Acoustic and Perceptual Voice Analysis
An acoustic analysis is conducted primarily to obtain baseline measurements correlating to the perception of pitch.13 When combined with perceptual analyses, an overall profile of the client’s voice can be compared with normative voice data to determine the degree of pitch modification required and to set realistic therapy goals.13
Baseline data of the following voice-related parameters should be recorded and evaluated:
- Mean fundamental frequency, range and standard deviation in conversation and reading
- Jitter, shimmer and harmonic-to-noise ratio on vowel sounds
- Minimum and maximum pitch range, pitch variability and intonation patterns
- Loudness variability
- Maximum phonation time
- Voice quality
- Larynx height
- Tongue position
- Mouth opening and lip movements
- Pitch and voice quality of non-linguistic features, including cough, laugh, and vocalised pauses13, 17, 31
A referral to an ENT for a laryngoscopic examination may be necessary.14 In general, transsexual clients seeking speech pathology services do not present with coexisting voice disorders.35 However, any assessment or therapy outcome which suggest ENT involvement should trigger a referral to an ENT.
Acoustic Voice Assessment (pdf)
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