Adding Stereo output?

[Calloway]

Would it be possible to have stereo output in GP?
For example, the note block could extend to another input for left/right/center output and if none is detected default to center.

It's a small suggestion but it really can make a difference if people want to get creative with sounds.

[JohnM]

Stereo is actually supported by the underlying system. Here's some help I got from the GP command line:

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gp> help openAudio
Open the audio output driver. The optional frameCount argument is the number of stereo or mono samples (frames) to buffer, a power of 2 between 256 and 8192. Output is mono unless optional stereoFlag argument is true. Arguments: [frameCount stereoFlag]
gp> help writeSamples
Write sound samples (an array of signed, 16-bit integers). If stereo, left and right channels are interleaved. Arguments: sampleArray

I haven't tried it, but I think if you manually open the driver in stereo mode then you *might* be able to use the "play samples" block to output a stereo buffer. If that doesn't work, you can use "write samples" directly, passing a "BinaryData" object to it with the left and right samples interleaved.

In short, stereo is possible, although it will require you to "roll your own" stereo sound output loop.

[JohnM]

By the way, here are all the sounds "primitives".

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-- Sound --
   openAudio
   closeAudio
   samplesNeeded
   writeSamples
   fft
   generateNoteSamples
   sendMIDI
   startSpeech
   stopSpeech
   startAudioInput
   stopAudioInput
   readAudioInput

I got this list from the list of primitives you get from typing "help" at the GP command prompt.

[Calloway]

Ah I see, so a psuedo-stereo solution would be possible.
I'll try working the kinks out somehow

What're the startSpeech and stopSpeech primitives used for?