How to measure SNR in an music file?

Hi everybody,

I need a method or tool to measure the quality of an audio signal after doing some processing (interpolation,...etc).

First of all how to find which is noise in a music file(through some method)?
What are the parameters which represents the quality of the audio signal(I mean 20KHz bandwidth)? How to measure them?

Thanks in advance.

Regards
Bhaskar N
b...@soctronics.com Start a New Thread

mdchalil13 wrote:
> PEAQ test should be ok. you can compare the scores before and after
> your processing.
>
> -Mc.
> --- On *Tue, 2/23/10, b...@soctronics.com
> //* wrote:
> From: b...@soctronics.com
> Subject: [audiodsp] How to measure SNR in an music file?
> To: a...
> Date: Tuesday, February 23, 2010, 10:55 AM
>
>
> Hi everybody,
>
> I need a method or tool to measure the quality of an audio signal
> after doing some processing (interpolation, ...etc).
>
> First of all how to find which is noise in a music file(through
> some method)?
> What are the parameters which represents the quality of the audio
> signal(I mean 20KHz bandwidth)? How to measure them?
>
> Thanks in advance.
>
> Regards
> Bhaskar N
> bhaskar.nallani@ soctronics. com
>
Hi Mc,
you are right, PEAQ test is correct in case of Codecs , to
measure the loss. I am sorry to confuse you in asking question in
different way.
The question is here, if it is a sample rate converter(not a codec), my
input file is at 44.1kHz sampling rate and output file is at different
(above or below) rate. So where can I find same original source file at
output rate. That is the problem in testing an SRC.
Is there any measure to test the quality of interpolation and decimation
of a file, other than single and multi tones (I did them), i.e., for
music files.

Thanks for you reply.

Thanks & Regards
Bhaskar N Start a New Thread