Hi~ My name is James. (sunggwon at 4nb.co.kr) 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 (used encoding source: VBR, Quality=10, Complexity=2) a) 1 decoding avg : 6 ~ 8 % b) 10 decodings 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/20131023/4bdea260/attachment-0001.htm