how to play pcm data in chrome

[npde...@gmail.com]

hi everybody

how to play pcm data in chrome,using javascript(WEB APP).

//incomingData is Float32Array,pcm data.

this.Play = function(incomingData, endCallback)

{

if(incomingData && incomingData.length > 0)

{

var length = incomingData.length;

var channelBuffer = this.AudioContext.createBuffer(this.ChannelCount, length, this.SampleRate); // Create Mono Source Buffer from Raw Binary 

//because channelBuffer doesn't support copyToChannel method ,data cann't be put to channelBuffer

                        //channelBuffer.copyToChannel(incomingData, 0, 0); //not supported in latest Chrome

var source = this.AudioContext.createBufferSource(); // Create Sound Source

source.buffer = channelBuffer; // Add Buffered Data to Object 

source.connect(this.AudioContext.destination); // Connect Sound Source to Output source.

source.onended = endCallback;

source.start(0);

}

}

[npde...@gmail.com]

在 2014年11月11日星期二UTC+8上午11时10分00秒，npde...@gmail.com写道：

hi everybody

how to play pcm data in chrome,using javascript(WEB APP).

//incomingData is Float32Array,pcm data.

this.Play = function(incomingData, endCallback)

{

if(incomingData && incomingData.length > 0)

{

var length = incomingData.length;

var channelBuffer = this.AudioContext.createBuffer(this.ChannelCount, length, this.SampleRate); // Create Mono Source Buffer from Raw Binary 

//because channelBuffer doesn't support copyToChannel method ,data cann't be put to channelBuffer

                        //1.  channelBuffer.copyToChannel(incomingData, 0, 0); //not supported in latest Chrome

 

                           //2.  channelBuffer.getChannelData(0) = incomingData;  //does't work,the value of the array item is zero(by default) 

                          //3.   channelBuffer.getChannelData(0).set(incomingData); //the same as 2

[Silvia Pfeiffer]

http://stackoverflow.com/questions/8710846/play-pcm-data-by-webaudio-api

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[npde...@gmail.com]

thanks ,but it doesn't work.

ab.getChannelData(0).set(floats);  //this step just set the value of buff copy ,not the channelbuffer

在 2014年11月11日星期二UTC+8下午2时08分21秒，Silvia Pfeiffer写道：