Does anyone know the data memory requirements for fixed point AEC? -Deepa -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/speex-dev/attachments/20061024/b9d776d6/attachment.htm
Deepa Bhatt wrote:> Does anyone know the data memory requirements for fixed point AEC?Just look at the init function to get an idea. The two main terms are 1) proportional to the frame size and 2) proportional to the tail length. The mem requirement was reduced a bit in 1.2beta1 (but because of a bug, you should use svn version instead), and could possibly be reduced a bit more if you were willing to put some effort. In the current version, there are also some variables that could be allocated as scratch space (can be trashed between calls) instead of being part of the echo canceller state. Jean-Marc
About your earlier question, yes there's still one or two transcendental functions left in the code, but only in the initialisations. Jean-Marc Deepa Bhatt wrote:> Does anyone know the data memory requirements for fixed point AEC? > > -Deepa > > > ------------------------------------------------------------------------ > > _______________________________________________ > Speex-dev mailing list > Speex-dev@xiph.org > http://lists.xiph.org/mailman/listinfo/speex-dev