Please note that as of October 24, 2014, the Nokia Developer Wiki will no longer be accepting user contributions, including new entries, edits and comments, as we begin transitioning to our new home, in the Windows Phone Development Wiki. We plan to move over the majority of the existing entries. Thanks for all your past and future contributions.

Audio Proxy Server FAQ

From Wiki
Jump to: navigation, search
Article Metadata
Created: wmseto (17 May 2007)
Last edited: hamishwillee (14 Jun 2013)

Q. When the G711 packets are played out, the noise is really bad. Why?

A. Try the folloing:

  • Using the SetEncoderMode and SetDecoderMode functions to set mulaw.
  • Check the first word of the G.711 audio buffer from the mic for the appropriate audio format. Only process those audio buffers that were "normal speech" (value of 1). Apparently some of the audio buffers contain data which is not "normal voice.

Q. Why am I getting KErrUnderflow?

A. During player initialization, make sure stat code at the call back is successful. Receiving EAPSPlayerInitComplete is not good enough. The status code at the call back needs to be checked. When sending data to the write queue when the player has not been successfully stated, KErrUnderFlow is returned.


Audio Proxy Server

Full Duplex Audio

This page was last modified on 14 June 2013, at 04:58.
49 page views in the last 30 days.