Re: [LAU] Frequency-response analyzer for Linux?

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To: Justin Smith <noisesmith@...>
Cc: <linux-audio-user@...>
Date: Saturday, July 18, 2009 - 2:18 am

On Fri, Jul 17, 2009 at 05:43:09PM -0700, Justin Smith wrote:

Thanks.

I did as you suggested, and it worked! But I'm confused by the results.

This is straigtht pink noise directly from JAPA's generator back into its input... but the frequency response appears not to be flat!
http://restivo.org/misc/pink.png

The white noise was similarly not flat:
http://restivo.org/misc/white.png

So, in terms of viewing the response of the filter, do I need to A/B or A-B to get some kind of estimate of what the filter is doing?

-ken
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Messages in current thread:
[LAU] Frequency-response analyzer for Linux?, Ken Restivo, (Tue Jul 14, 10:06 pm)
Re: [LAU] Frequency-response analyzer for Linux?, Sampo Savolainen, (Wed Jul 15, 8:06 am)
Re: [LAU] Frequency-response analyzer for Linux?, Mark Knecht, (Tue Jul 14, 10:26 pm)
Re: [LAU] Frequency-response analyzer for Linux?, Folderol, (Tue Jul 14, 10:35 pm)
Re: [LAU] Frequency-response analyzer for Linux?, Justin Smith, (Tue Jul 14, 10:42 pm)
Re: [LAU] Frequency-response analyzer for Linux?, Justin Smith, (Tue Jul 14, 10:25 pm)
Re: [LAU] Frequency-response analyzer for Linux?, Fons Adriaensen, (Tue Jul 14, 11:03 pm)
Re: [LAU] Frequency-response analyzer for Linux?, Justin Smith, (Tue Jul 14, 11:13 pm)
Re: [LAU] Frequency-response analyzer for Linux?, Ken Restivo, (Fri Jul 17, 11:47 pm)
Re: [LAU] Frequency-response analyzer for Linux?, Justin Smith, (Sat Jul 18, 12:43 am)
Re: [LAU] Frequency-response analyzer for Linux?, Ken Restivo, (Sat Jul 18, 2:18 am)
Re: [LAU] Frequency-response analyzer for Linux?, Fons Adriaensen, (Sat Jul 18, 11:53 am)
Re: [LAU] Frequency-response analyzer for Linux?, Ken Restivo, (Sat Jul 18, 5:28 pm)