FAQ-0968 Why doesn't my audio application work on a Nokia 3650 when it worked fine on a Nokia 7650?


FAQ-0968 Why doesn't my audio application work on a Nokia 3650 when it worked fine on a Nokia 7650?

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Classification:	C++	Category:	Multimedia
Created:	02/06/2004	Modified:	02/06/2004
Number:	FAQ-0968
Platform:	Symbian OS v6.1

Question:
When porting an application from 7650 to 3650, it is possible that the audio will break up on 3650 when it worked fine on 7650. Why is this?

Answer:
The audio sub-system on Nokia's 3650, whilst being largely based on the implementation in the 7650 was modified to support 16KHz audio as well as the 8KHz natively supported by the 7650.

It is possible that the 16KHz mode is enabled by default on the 3650 and thus if the application is hard-coded to use 8KHz audio it may break up because of the sample rate differences. The solution to this is either not to hard code applications to use 8KHz [preferred] or to ensure that the sample rate has been correctly configured to 8KHz on the 3650.