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GetSpeechPitch |
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Header: | SpeechSynthesis.h | Carbon status: | Supported | |
Determines a speech channels current speech pitch.
OSErr GetSpeechPitch ( SpeechChannel chan, Fixed *pitch );
The speech channel whose pitch you wish to determine.
On return, a pointer to the current pitch of the voice in the speech channel, expressed as a fixed-point frequency value.
A result code.
Typical voice frequencies range from around 90 hertz for a low-pitched male voice to perhaps 300 hertz for a high-pitched childs voice. These frequencies correspond to approximate pitch values in the ranges of 30.000 to 40.000 and 55.000 to 65.000, respectively. For information about the mathematical relationship between pitches and frequencies expressed in hertz.
You can call the GetSpeechPitch function at interrupt time.
Supported in Carbon. Available in Carbon 1.0.2 and later when running Mac OS 8.1 or later.
© 2000 Apple Computer, Inc. (Last Updated 6/30/2000)