[CRTech] Christian Radio Tech [MSG 83392]
[Thread Prev] [-- Thread Index --] [Thread Next] [Date Prev] [-- Date Index --] [Date Next]
Re: AM Audio Processors
To: CRTech <crtech@crtech.org>
Subject: Re: AM Audio Processors
From: Willie Barnett <wbradiolists@gmail.com>
Date: Fri, 20 Jul 2018 11:22:38 -0400
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:in-reply-to:references:from:date:message-id:subject:to; bh=cYTDAjfmH05/xVTSf0/iwRKvYCUR07J3ZDqjptjZjIY=; b=E2csX+IcXpmSAaubl00hh6uVOtZBLlW0hlcJJgJlUCcbP/NtF0cED1Gs3yI36+ghCQ RTYd+kH17HPUsypPkKq5JILZnrhmY6lB31JuchF5GY2jZ4AifoRtC/7hmswi0xD4nm3T JXzZHeeR+32IS0m0q3xpg2JeMVo7ApajU5Q5kMfy6uPDDPX9Y/8Kklg37Gn1wL3ZSOpF oXFl0G8ReuY9gjHXoF9FKe86oJCMyeNTD7k/f3TVhOe0FyYMUOkfSeIblbJDQDVnIlK1 6na/5JDoysIKtTxDxekUmSpYxJRhw/Qa95KXNqX84qAzp/j7jdQK6/8Ck3hTtDufKGIO OHtQ==
In-reply-to: <alpine.WNT.2.10.1807111517450.3956@Lyle-Dell-D630>
References: <CAB42DVoxm0Ti9XQfxze3Qqh3TScvtL3bMLWiJ-M9P4WBcW1UAQ@mail.gmail.com> <1408412207.3618221.1531345986177.JavaMail.zimbra@bevcomm.net> <1023527894.3006318.1531346206610@mail.yahoo.com> <alpine.WNT.2.10.1807111517450.3956@Lyle-Dell-D630>
Just a handful of thoughts from a "former" AM guy of 20 years. :) (It's still in my blood, tho!)

I wouldn't decrease the high end bandwidth like that. It helps with speech clarity to keep those highs out to 9KHz or so. There really isn't much "power" in the highs, either. Depending upon the radio, those highs will help with intelligibility.

You COULD reduce the low end a few DB, tho. THAT is where POWER is really wasted, considering that the VAST MAJORITY of AM listening isn't done on hi-fi systems with big woofers. ;) Anything below ~50Hz, for example, is really unnecessary for talk formats. A slope-off, rather than a brickwall, is good. Too much bass makes talk sound too muddy.


On Wed, Jul 11, 2018 at 6:29 PM, RADIO DOCTOR <lylehenry@fastmail.fm> wrote:

I'm also wondering if it would make sense to cut the audio bandwidth in half from the 9200, say 4.5kHZ instead of 9-ish to stop wasting modulation on frequencies that almost no receivers except the modulation monitor can pass?
Follow-Ups: Re: AM Audio Processors
(RADIO DOCTOR <lylehenry@fastmail.fm>, 22 Jul 2018 23:12:18 -0000)
References: AM Audio Processors
(Tom Van Gorkom <tomvangorkom@gmail.com>, 11 Jul 2018 19:16:24 -0000)
Re: AM Audio Processors
(Mark Carol Bohnett <mbohnett43@bevcomm.net>, 11 Jul 2018 21:53:21 -0000)
Re: AM Audio Processors
(JIm Turvaville <jimturbo61@yahoo.com>, 11 Jul 2018 21:56:54 -0000)
Re: AM Audio Processors
(RADIO DOCTOR <lylehenry@fastmail.fm>, 11 Jul 2018 22:30:07 -0000)
Prev by date: Re: Time for a new or rebuilt tube
(KBGN AM, 20 Jul 2018 02:48:33 -0000)
Next by date: Re: Time for a new or rebuilt tube
(Pat Wahl, 20 Jul 2018 17:58:27 -0000)
Prev by thread: Re: AM Audio Processors
(RADIO DOCTOR, 12 Jul 2018 04:53:41 -0000)
Next by thread: Re: AM Audio Processors
(RADIO DOCTOR, 22 Jul 2018 23:12:18 -0000)