search for: 500hz

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2010 Feb 13
1
Tuning Vorbis for Low Freq
Hi, I've tried vorbis on a stream that has ~500Hz tops and it worked quite good, but the raw data was converted to a fake 16bit 44Khz WAV Are there any chances I can take the code and tune it to work with nonPCM data that has info from about 5 up to 500Hz? It would be nice to know where to start. Thanks you. -------------- next part -------...
2000 Jul 14
1
Borland Builder
...in os.h to compile under C++Builder. It has the alloca prototype in malloc.h. #ifndef __GNUC__ #ifdef _WIN32 # ifdef __BORLANDC__ # include <malloc.h> # else # define alloca(x) (_alloca(x)) # endif # define rint(x) (floor((x)+0.5)) #endif #endif Encoding a full range pure tone (500Hz) seems to cause a domain error in sqrt(). Can anyone confirm that under Linux? Chris --- >8 ---- List archives: http://www.xiph.org/archives/ Ogg project homepage: http://www.xiph.org/ogg/
2000 May 08
3
Merge done
The merge of the format changes and new psychoacoustics is complete. There's still tuning work left to do (most notably there's a somewhat higher-than-acceptable level of background low-midrange/upper bass noise; this is due mostly to incomplete psychoacoustic modelling data in the 100Hz-500Hz range) however, at this point, pending bugfixes, the Vorbis 1.0 stream format is frozen. Streams at this point should now be immortal. I probably broke minor things on non-Linux platforms; check them out. I'm also unburied to pay more attention to bug reports/compatability requests for other...
2004 Aug 06
2
Preprocessing and Echo Cancellation Notes.
First, I'd just like to thank the Speex community, and Jean-Marc especially, for their great work. I'm developing a VoIP library (which uses IAX, the asterisk protocol) as the network protocol. I've been putting off integrating Speex for a while, as things have been working pretty well so far with GSM. (for those interested, the code is at iaxclient.sourceforge.net). However,