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.
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