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Re: [Discuss-gnuradio] Rational resampler
From: |
Eric Blossom |
Subject: |
Re: [Discuss-gnuradio] Rational resampler |
Date: |
Wed, 8 Mar 2006 08:38:29 -0800 |
User-agent: |
Mutt/1.5.9i |
On Wed, Mar 08, 2006 at 07:56:11AM -0500, Marcus Leech wrote:
> I'm trying to re-sample signals, ranging from 0.5Hz up to about 40Hz,
> sampling them at some small
> integer multiple of their frequency. Simple decimation isn't getting
> close enough, in many circumstances,
> leaving a significant phase erorr.
>
> I'm thinking that I can get closer using the rational resampler block,
> but I need more guidance than the online documentation can give me. Any
> clues?
Did you see gnuradio-examples/python/audio/test_resampler.py?
It just works ;)
> My input sampling rate is from the audio card--16Khz to 48Khz. My
> output sampling rate should be
> a small multiple (16 or 32) of the desired pulse frequency (0.5Hz to
> 40Hz, depending on which object
> I'm trying to observe).
Eric