TIP: Click on subject to list as thread! ANSI
echo: pro_audio
to: RAY WILSON
from: TERRY SMITH
date: 1996-04-04 15:32:00
subject: Re: Car Audio?

 RW>     of car audio. From time to time, questions pertaining to car audio
 RW>     would pop up. Discussion of car audio has always been discouraged.
 RW>     Myself, I fail to see how the interior of a motor vehicle could lend
 RW>     itself to quality sound. Thus... it is now time to put an end to the
There is one serious aspect of car audio that is very much a pro topic, for 
the same reason many studios have Aurotones as secondary monitors.  
Whether in recording, commercial production, or broadcast, audio processing 
more often than not needs to put more emphasis on impact to listeners with 
bad quality car systems in noisy environments (as well as blue light special 
stereos at home) than it can devote to clean systems operated with surplus 
dynamic range in quiet homes.  
In broadcast, that leads to two kinds of loudness wars.  One often results in 
aggravated distortion, and overdeviation of some FM IFs.  Many FM programmers 
are technically illiterate enough to think that overmodulation makes for a 
less noise prone signal, without understanding the Bessell functions or 
clearly grasping mulitpath concepts.  (Yes, you need at least one or two 
levels of math beyond integral calc to clearly understand basic audio 
concepts.)  
The other kind of loudness war is valid.  That's the one where you try to 
crunch the signal enough so that a 4 watt amp driving 88 dB efficiency 
speakers can produce commercials audible over 75-80 dB spl of road, vehicle, 
and wind noise, preferably without driving the amp much over 10 or 20% 
distortion.  
Terry
--- Maximus 2.01wb
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* Origin: Do it near resonance! (203)732-0575 BPCN in CT (1:141/1275)

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