[Freeswitch-users] mod_rtmp audio codecs issues for speech recognition?

[x.liu]

Hello,

I am trying the FS sample Flex client for TTS and speech recognition.
The TTS sounds OK. I use Nuance MRCP v1 server with Nuance recognizer 9.

The problem is that I hardly get the recognition result,only 
occasionally I got some simple words output like "repeat", "ok" which 
were not I said.
The whole recognition setup works well when I use a telephone line but 
basically not work by using the flex client from a web broswer.
The recorded voices in FS which were sent from the web browser via the 
flash rtmp sound fine.

I guess it may be the audio codec issues. The flash rtmp uses Speex. My 
mrcp profile specifies the codecs as "PCMU PCMA L16/96/8000"

Is there a way to automatically convert the Speex audio to the mrcp 
required formats during calling the system?
Or what should I look at to get the proper speech recognition via the 
flash rtmp?

Many thanks!

Xing



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