Topband: noise analysis w/ soundcard

[K4SAV]

B. Denison wrote:

>I am just wondering if it is possible to analyze noise (possible power 
>line noise, etc.) using a sound card?
>If so, should one look into an audio analysis program or a sound card 
>oscilloscope as the means of analysis.
>
>Anyone have any suggestions on what some good programs are?
>
>Thanks,
>
>Brad
>W1NT
>_____________________________________
>  
>

If you are only looking to detect the presence of 60 Hz or related 
harmonics present within noise, a PSK31 waterfall will do the job.  It 
will also detect other frequencies present within the noise.  These will 
appear as vertical lines while random noise will just look like TV snow.

More detailed info can be found by saving a recording as a wav file and 
examining it with one of the sound editor programs.

Jerry, K4SAV