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From: KRW1@Lehigh
Newsgroups: comp.sys.ibm.pc
Subject: Re: Speaker Control/Music
Message-ID: <27059014:00:53KRW1@lehigh.bitnet>
Date: 27 May 90 19:00:53 GMT
Lines: 9
To:	_LUSYSNZ
CC:
Return-path: KRW1 <@IBM1.CC.Lehigh.EDU:KRW1@Lehigh.Bitnet>
To: lusysnz@VAX1.CC.LEHIGH.EDU

Yes, it is possible to control the volume of the PC speaker, but
probably not in a way that is suitable for most applications.  The
techniques used for playing digitized sound allow the reproduction of
any audio signal within about a 35 db volume range.  Unfortunately, this
requires increasing the system timer interrupt rate to 8-16KHz, not
giving you time to do much else except service the interrupt on slower
machines.  On the other hand, if you're not interested much in sound
quality, that interrupt rate could probably be lowered.  Haven't tried
it for simple tones.  It might be feasible.  -- Kevin