Please help me find information on Watson Speech to Text and Text to Speech regarding:
-Sampling rate
-Buffer size
-No of Channels etc.
I am currently using 10KB buffer size for Text to Speech. Do you think its ok or do I need to increase the size.
You can find information about the sampling rate for the audio that is returned by Text to Speech here:
http://www.ibm.com/watson/developercloud/doc/text-to-speech/http.shtml#sampling
This page of the documentation may also address some of your other questions. I will follow up on some of the other specific issues you mention.