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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

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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 
> /<b...@soctronics.com>/* wrote:
>     From: b...@soctronics.com <b...@soctronics.com>
>     Subject: [audiodsp] How to measure SNR in an music file?
>     To: a...@yahoogroups.com
>     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
>    
<http://us.mc554.mail.yahoo.com/mc/compose?to=bhaskar.nallani%40soctronics.co
m>     
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

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