PSN-L Email List Message
Subject: Re: Rockland filter
From: Bob Barns royb1@...........
Date: Tue, 09 Jan 2007 11:11:20 -0500
With the usual 14 or 16 bit A/D's, is that dynamic range necessary?
> In a message dated 08/01/2007, royb1@........... writes:
> There us currently a digital Rockland on ebay but it looks
> expensive and
> I don't know the specs. The analog version comes up occasionaly.
> Hi Bob,
> I haven't read the data manual for a Rockland Digital Filter, but
> the problem with digital filters for seismic use has previously been
> their low dynamic range. They are simply too noisy and may give less
> than 80 dB, where over 120 dB would be desirable.
> Chris Chapman
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