[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Discuss-gnuradio] A medley of questions
From: |
Eric Blossom |
Subject: |
Re: [Discuss-gnuradio] A medley of questions |
Date: |
Sat, 17 Mar 2007 13:12:28 -0700 |
User-agent: |
Mutt/1.5.9i |
On Sat, Mar 17, 2007 at 08:00:59AM -0700, Mike Garcia wrote:
>
> Thanks Eric. That makes sense. I'm still learning about gnuradio so excuse
> my naivete. Could the distortion be cause by the CIC filters? I understand a
> CIC filter needs some amount of bit growth. If the LSBs are truncated
> instead, then that amounts to adding noise to the system. This may be
> unavoidable but might explain the distortion you're seeing.
>
> Mike
I don't think it's a problem in the CIC. They have enough width to
accomodate the maximum decimation (usrp/fpga/sdr_lib/cic_decim.v)
I'm waiting on hearing the results of low pass filtering the "perfect
samples" without decimation, and seeing if the problem still exists.
Eric
- Re: [Discuss-gnuradio] A medley of questions, (continued)
- Re: [Discuss-gnuradio] A medley of questions, Steven Clark, 2007/03/14
- Re: [Discuss-gnuradio] A medley of questions, Brian Padalino, 2007/03/14
- Re: [Discuss-gnuradio] A medley of questions, Steven Clark, 2007/03/14
- Re: [Discuss-gnuradio] A medley of questions, Eric Blossom, 2007/03/14
- Re: [Discuss-gnuradio] A medley of questions, Steven Clark, 2007/03/14
- Re: [Discuss-gnuradio] A medley of questions, Eric Blossom, 2007/03/15
- Re: [Discuss-gnuradio] A medley of questions, Steven Clark, 2007/03/21
- RE: [Discuss-gnuradio] A medley of questions, Mike Garcia, 2007/03/16
- Re: [Discuss-gnuradio] A medley of questions, Eric Blossom, 2007/03/17
- RE: [Discuss-gnuradio] A medley of questions, Mike Garcia, 2007/03/17
- Re: [Discuss-gnuradio] A medley of questions,
Eric Blossom <=
- Re: [Discuss-gnuradio] A medley of questions, Brian Padalino, 2007/03/19