Hi~ My name is James. I am a iOS developer. My app need sound codec. (1 encoding & 32 decoding at the same time) So i used speex codec. But codec's performance was lower than my expectation. Is it normal ? or did i do something wrong ? cpu usage test of speex codec on iPad2. (tested by xcode instruments) ===============================================================## encoder test a) 1 encoding (VBR, Quality=10, Complexity=2) avg : 26 ~ 28 % peak: 38 % b) 1 encoding (VBR, Quality=0, Complexity=1) avg : 14 ~ 16 % peak: 20 % c) 1 encoding (VBR, Quality=1, Complexity=10) avg : 14 ~ 22 % peak: 30 % d) 1 encoding (VBR, Quality=10, Complexity=10) avg : 26 ~ 76 % peak: 94 % e) 1 encoding (CBR, Quality=10, Complexity=2) avg : 30 % peak: 40 % f) 1 encoding (CBR, Quality=0, Complexity=1) avg : 14 % peak: 20 % ## decoder test a) 1 decoding (encoding source: VBR, Quality=10, Complexity=2) avg: 6 ~ 8 % b) 10 decodings (encoding sources: VBR, Quality=10, Complexity=2) avg : 58 ~ 72 % peak: 82 % =============================================================== Can you tell me any advice or some information ? Thanks. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://lists.xiph.org/pipermail/speex-dev/attachments/20131021/cb79673d/attachment-0001.htm