Displaying 2 results from an estimated 2 matches for "thepcm".
Did you mean:
thepc
2010 Jun 26
3
Down Convertion from 32Khz to 16Khz
hi
on my device i can sample only at 32khz and want to use speex at 16khz so i
need to down-convert the input signal by factor of 2.
does anyone provide me a reference to some code that does that? are there
any trick to do that?
i tried to add to subsequent sample but the result was very bad.
what are the requrment from a decimation filter for audio?
thanks,
nir
-------------- next part
2010 Jun 26
0
Down Convertion from 32Khz to 16Khz
...invert high order byte
int inverted = ((int)it) ^ 0x00000080
byte[] toWrite = new byte[1]; toWrite[0] = (byte)inverted
outputStream.write toWrite
otherByte = false
} else otherByte = true
}
}
Basically you need to write every other byte in thePCM sample stream.
Clifton Craig
Software Engineer
http://codeforfun.wordpress.com
clifton.craig at gmail.com
On Jun 26, 2010, at 9:50 AM, nir elkayam wrote:
> hi
>
> on my device i can sample only at 32khz and want to use speex at 16khz so i need to down-convert the input signal by fact...