When I change tempo in Audacity (sound application) - it modifies test.wav very fast (1 sec). Now when I process same file in my application, it takes 27 seconds. I call soundtouch.dll functions via interop. When I apply QuickSeek, it take same amount of time to process smaple file. No difference. Anyone had same problems? I use soundtouch.dll downloaded from orginal website and with float sample type.
Fixed. Had to send small blocks (max 100kB) in loop instead of one big block (like in example at soundtouch homepage). All was in loop, after each block I sent, I tried to receive new processed data. And it took now 200x time less than before. Now using QuickSeek gives noticeable processing time boost.