Contents

GetSpeechPitch(_:_:)

Gets a speech channel’s current speech pitch.

Declaration

func GetSpeechPitch(_ chan: SpeechChannel, _ pitch: UnsafeMutablePointer<Fixed>) -> OSErr

Parameters

  • chan:

    The speech channel whose pitch you wish to determine.

  • pitch:

    On return, a pointer to the current pitch of the voice in the speech channel, expressed as a fixed-point frequency value.

Return Value

A resultcode. See Result Codes.

Discussion

Typical voice frequencies range from around 90 hertz for alow-pitched male voice to perhaps 300 hertz for a high-pitched child’svoice. These frequencies correspond to approximate pitch valuesin the ranges of 30.000 to 40.000 and 55.000 to 65.000, respectively.

See Also

Obtaining Information About Speech and Speech Channels