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mohayonao / web-audio-engine

Pure JS implementation of the Web Audio API
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StereoPanner strange behavior #37

Closed AdrienFromToulouse closed 8 years ago

AdrienFromToulouse commented 8 years ago

Hi @mohayonao -san !

I was trying to use the StereoPanner. But it sounds like it has some trouble to handle AudioBuffer from a stereo file...I get silence. I hope you could have a look and tell me if you do think it could comes from the implementation of the StereoPanner or if I did a crappy mistake in my script :/

Indeed it works well with an oscillator but from an audioSource I have to force panNode.channelCount to 1 to make it works, otherwise I get silence. But then, it looks like both channels are completely mixed together => if panNode.pan.value = 0 left and right channel contains mix of both, i.e mono like.

Here is the Gist ready to be run with wae by changing the path of the audio file: https://gist.github.com/AdrienFromToulouse/46740802f6acd50430404de66b0b9d46

wae stereoPanner-test.js

Audio file on S3 in Japan :) (to be downloaded):

https://s3-ap-northeast-1.amazonaws.com/stereo-panner-test/MixTwoDifferentChannels.wav

I would be very thankful if you could give me your opinion on this.

Cheers!

buramensky commented 8 years ago

Same issue :( I've noticed that StereoPanner works fine with mono input but in case of stereo it produces just silence.

buramensky commented 8 years ago

@mohayonao Thanks! You're awesome! :+1:

mohayonao commented 8 years ago

I fixed this problem at v0.9.3. thanks for your reports!