How to encode live audio to a-law?

Hi all,
I would like to know how to configure the processor to encode live audio to a-law datasource. I got something like this when I tried to start processor:
Failed to build a graph for the given custom options.
Failed to realize: com.sun.media.ProcessEngine@765a16
Cannot build a flow graph with the customized options:
Unable to transcode format: LINEAR, 44100.0 Hz, 16-bit, Stereo, LittleEndian
, Signed
to: alaw, 8000.0 Hz, 8-bit, Mono
outputting to: RAW
Error: Unable to realize com.sun.media.ProcessEngine@765a16
Thanks.

I think the format has to be one of those included in the getSupportedFormats().
For example if you have a single track processor,
Format[] formats = processor.getTrackControls()[0].getSupportedFormats()
This should be callled on a confured processor. it returns an array of supported encoding/transcoding or output format for this configured processor. setting any of these should be successfull.
Once format is set, the processor can be realized and started
In your case I guess you have to find the format in the array that best matchs your a-law format then use this format from the array to set to the processor. (dont worry, their will be a few a-law formats)
I think that in your case, transcoding 16-bit to 8-bit was the problem.
Also, capturing at lower than 44100.0hz when transcoding to alaw 8000 could be considered, I mean capturing at 8000.0hz could work too

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