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Distortion on AMBOS programs
To: CRTech <crtech@crtech.org>
Subject: Distortion on AMBOS programs
From: Willie Barnett <wbradiolists@gmail.com>
Date: Mon, 29 Jan 2018 15:45:35 -0500
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Greetings, Braintrust!

As of a few months(?) ago, now, most (if not all?) of the short programs we receive from the AMBOS system, have a low-level, high frequency distortion. When examined in the spectral view of Audition, the frequencies extend all the way to 22Khz, at a MUCH higher than normal level.

I am ASSUMING (yes, I know, I know...) that there may be a direct conversion going on, from 48Khz sampling down to 44.1Khz without filtering. Was something changed in the past few months regarding conversion/filtering in the AMBOS?

This effect is not VERY noticeable, but it IS there, and the 15khz filter of the audio processor doesn't filter it out. Voices have a sort of "grunge" that sounds like a small amount of sand in the speaker. Even when I filter (in Audition) down to 10Khz, the "grunge" is still there.

Willie...

Follow-Ups: RE: Distortion on AMBOS programs
(Mark Murdock <mark@celebrationradio.com>, 29 Jan 2018 22:15:48 -0000)
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