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Re: [Discuss-gnuradio] DC-block block

From: Marcus D. Leech
Subject: Re: [Discuss-gnuradio] DC-block block
Date: Fri, 20 Mar 2015 10:41:34 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0

On 03/20/2015 10:25 AM, Brian Padalino wrote:
On Fri, Mar 20, 2015 at 9:45 AM, Marcus D. Leech <address@hidden> wrote:
I'm wanting to use the DC-block block, and I have questions about its use.

My scenario is to use it as a cheap high-pass, with a corner frequency of a
few milli-hertz, with samples arriving at 50Hz.

It's not clear how the "length" parameter relates to the desired corner
frequency and sample rate.
I believe this is implemented as described as a linear phase DC
blocker in this paper:


I believe the "length" parameter is the "D" parameter in the moving
average calculations.

Hopefully this helps.

Thanks muchly.  This helps a lot.

The graph at 4(a) is quite enlightening.

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