xPLRioNet and TTS Volume

["Tony Tofts" <tony@xxxxxxxxxx>]

Hi all,

The attempt to control the volume of the TTS announcements during playback
of a track is a none runner.

This is due to the buffer, and unknown 'true time' length of the mp3 in the
buffer due to it's compression.

Also, it has having knock on effects on the volume control.

The only volume control that can be performed on tts will have to be at the
tts server end.

As such the volume= in tts.basic and announcevolume= in audio.rio will
change as follows:

volume=x-yyy (e.g. 0-100 or 1-10)

where x = lame amplification in the range 1 to 4 (1=no amplification, same
as 0)

and y = volume level of tts generation 1 to 100

volume=100 will be intrepeted as 1-100 etc

Also, as this change needs to be made, the speed parameter of tts will also
be supported.
tts.basic already supports speed, but audio.rio will be extended as follows
extended=announcespeed +5

As such the cache files will be prefixed with their settings:

e.g. for wavs =  090+05hello world.wav
(volume=90, speed=+5)

e.g. for mp3's =  1090-05hello world.mp3
(no amplification, volume=90, speed=-5)

e.g. for mp3's = 2090000hello world.mp3
(2 x amp, volume=90, speed = normal)

Regards
Tony






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