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Re: [Discuss-gnuradio] pll_refout_cc - finding optimum alpha & beta ??
From: |
Eric Blossom |
Subject: |
Re: [Discuss-gnuradio] pll_refout_cc - finding optimum alpha & beta ?? |
Date: |
Fri, 17 Mar 2006 11:35:34 -0800 |
User-agent: |
Mutt/1.5.9i |
On Fri, Mar 17, 2006 at 10:48:24AM -0800, Matt Ettus wrote:
>
> > It just seeemd strange to me that a very large number, d_freq, which is
> > bounds limited to between d_min_freq and d_max_freq, is inside a
> > function trying to limit it's output to between +PI and -PI.
> >
> > if(100e3 > M_PI)
> > return(100e3-M_TWOPI)
> >
> > or 99993.7168... error can get close to zero, but frequency will
> > never be less than d_freq_min.
>
>
> d_freq is not in Hz. It needs to be in radians per sample, which should
> always be less than PI.
That clears it up. Thanks!
Eric
- Re: [Discuss-gnuradio] pll_refout_cc - finding optimum alpha & beta ??, (continued)
- Re: [Discuss-gnuradio] pll_refout_cc - finding optimum alpha & beta ??, Robert McGwier, 2006/03/16
- Re: [Discuss-gnuradio] pll_refout_cc - finding optimum alpha & beta ??, Charles Swiger, 2006/03/17
- Re: [Discuss-gnuradio] pll_refout_cc - finding optimum alpha & beta ??, Eric Blossom, 2006/03/17
- Re: [Discuss-gnuradio] pll_refout_cc - finding optimum alpha & beta ??, Charles Swiger, 2006/03/17
- Re: [Discuss-gnuradio] pll_refout_cc - finding optimum alpha & beta ??, Charles Swiger, 2006/03/17
- Re: [Discuss-gnuradio] pll_refout_cc - finding optimum alpha & beta ??, ldoolitt, 2006/03/17
- Re: [Discuss-gnuradio] pll_refout_cc - finding optimum alpha & beta ??, Eric Blossom, 2006/03/17
- Re: [Discuss-gnuradio] pll_refout_cc - finding optimum alpha & beta ??, Charles Swiger, 2006/03/17
- Re: [Discuss-gnuradio] pll_refout_cc - finding optimum alpha & beta ??, Matt Ettus, 2006/03/17
- Re: [Discuss-gnuradio] pll_refout_cc - finding optimum alpha & beta ??, Robert McGwier, 2006/03/17
- Re: [Discuss-gnuradio] pll_refout_cc - finding optimum alpha & beta ??,
Eric Blossom <=
- Re: [Discuss-gnuradio] fixing gr_pll_*_c[cf], Charles Swiger, 2006/03/22
- Re: [Discuss-gnuradio] fixing gr_pll_*_c[cf], Eric Blossom, 2006/03/22