https://community.intel.com/t5/Intel-Integrated-Performance/G729-compression-size/m-p/814872#M4185 I have been playing with the usc_speech_codec sample to compress a wav file that is<BR />800K in size, and I would assume that compressing it with G729 should give me a<BR />size reduction factor of 16:1 (160bytes -&gt; 10 bytes), hence I would expect an output<BR />file of 50K in size, but I'm actually getting a file of 81K in size. <BR />Am I missing something obvious? Wed, 29 Sep 2010 16:30:40 GMT roccap 2010-09-29T16:30:40Z https://community.intel.com/t5/Intel-Integrated-Performance/G729-compression-size/m-p/814872#M4185 I have been playing with the usc_speech_codec sample to compress a wav file that is<BR />800K in size, and I would assume that compressing it with G729 should give me a<BR />size reduction factor of 16:1 (160bytes -&gt; 10 bytes), hence I would expect an output<BR />file of 50K in size, but I'm actually getting a file of 81K in size. <BR />Am I missing something obvious? Wed, 29 Sep 2010 16:30:40 GMT https://community.intel.com/t5/Intel-Integrated-Performance/G729-compression-size/m-p/814872#M4185 roccap 2010-09-29T16:30:40Z https://community.intel.com/t5/Intel-Integrated-Performance/G729-compression-size/m-p/814873#M4186 Hi,<BR />USC output file designed to allow USC decoder to automatically detect used speech codec and corresponding bitrate. To realize itframe header in the length of 6 bytes stored before every compressed frame.Adding of theframe header occuresonly on application level and all USC codecs returns clear bitstream.<BR /><BR />Igor S. Belyakov Thu, 30 Sep 2010 05:00:26 GMT https://community.intel.com/t5/Intel-Integrated-Performance/G729-compression-size/m-p/814873#M4186 Igor_B_Intel1 2010-09-30T05:00:26Z