Hi Stéphane, Hi All,
I'm working on AAC encode/decode and mp4 packaging. I'm trying to test using the stereoBachFugue, but I can't even get the following to generate any sound in stereo. What am I doing wrong?
testSqueakStereoSound | aMixedSound left right samples | (aMixedSound := MixedSound new) add: (AbstractSound bachFugueVoice1On: FMSound oboe1) pan: 0.4; add: (AbstractSound bachFugueVoice2On: FMSound organ1) pan: 0.1; add: (AbstractSound bachFugueVoice3On: PluckedSound default) pan: 0.9; add: (AbstractSound bachFugueVoice4On: FMSound brass1) pan: 0.6. left := WriteStream on: SoundBuffer new. right := WriteStream on: SoundBuffer new. samples := aMixedSound computeSamplesForSeconds: aMixedSound duration. [1 to: samples size by: 2 do: [:i| left nextPut: (samples at: i). right nextPut: (samples at: i + 1)]] value. "to step over quickly in the debugger" ^MixedSound new add: (SampledSound samples: left contents samplingRate: aMixedSound samplingRate) pan: 0; add: (SampledSound samples: right contents samplingRate: aMixedSound samplingRate) pan: 1; play
"self testSqueakStereoSound"
The idea is to pan the harpsichord and organ almost hard right and left, and pan the oboe and tuba a little around the centre, generate the stereo samples via computeSamplesForSeconds:, decompose the two channels into two separate monophonic channels, and recombine them. But I on;y ever get silence. I can see that the decomposition looks correct, but why do neither the resulting MixedSound, nor either the left or right channel produce any sound?
_,,,^..^,,,_ best, Eliot
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