Algorithms :: General :: Wave Audio Analysis |
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By: omuyelijah  |
Date: 14/02/2008 13:00:13  |
Points: 20 | Status: Answered Quality : Excellent |
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Hello All, I recently wrote a c++ application to record radio tape data, storing into .wav and playing quite well but there is this background wave noise following the sound when played ( i.e. the 'shshshshshshsh' sound). Is there a way of removing this noise from it (cos I know it comes from the wave recording), probably an algorithm to be implemented programmatically or some other way? My code sample has these characteristics set before recording starts ------------------------------------------------------------------ nChannels=(WORD) 1; //channels for wave audio data nSamplesPerSec=(DWORD) 44010; //44.01khz wBitsPerSample=(WORD) 8; //should be 8 or 16 nBlockAlign= (WORD) ((wavfmt.nChannels * wavfmt.wBitsPerSample)/8); nAvgBytesPerSec= (DWORD) (wavfmt.nSamplesPerSec * wavfmt.nBlockAlign); Thanks all. |
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| By: VGR | Date: 15/02/2008 08:08:39 | |
Type : Answer |
| personally, I would either : - edit manually the WAV with an audio editor - try to figure out if the unwanted sound is of a fixed length, and then delete as many seconds as necessary from the (end of) file - programmatically try to analyse the file to see when the music stops and the noise begins, and then delete accordingly I don't know how to perform #3, but you perhaps know. |
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