2.11.2 Speech Channel Objects A Speech Channel object allows you
to speak strings with slightly more control than SpeakString(),
and allows you to use multiple speakers at the same time. Please
note that channel pitch and rate are interrelated in some way,
so that to make your Macintosh sing you will have to adjust
both. - SpeakText (str) Start uttering the given string. - Stop
() - GetPitch () Return the current pitch of the channel, as a
floating-point number. - SetPitch (pitch) Set the pitch of the
channel. - GetRate () Get the speech rate (utterances per
minute) of the channel as a floating point number. - SetRate
(rate) Set the speech rate of the channel. See About this
document... for information on suggesting changes.