Thank you for the reply. Finally I figure out the problem. The code is OK, but I thought it should be louder. So when I was multiplying t by 2, I could not hear the difference from my laptop speaker. But after multiplying PCM data by 20, I heard a significant difference.
Best, Dripsotne On Tue, Oct 27, 2009 at 1:44 AM, Jens M Andreasen <[email protected]>wrote: > On Mon, 2009-10-26 at 17:53 -0700, Drip Stone wrote: > > > > > I pasted all the code at http://pastebin.com/m7fdf0957. > > OK! Aside from the C++ style of declaring iterators, I just made this > change in (or around) line 126 to raise left channel by 6 dB: > > -8<------------------------------------------ > //left > int i; > for (i = 0; i < frames; i++ ) > { > float t = 0; > int j; > if ( left ) > { > t = *((float*)&(fbuffer[pos+i*4])); > t *= 2.0f; // <-- Works like a charm? > ... > > ---------------------------8<--------------------- > > What was the problem now again? > >
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