Article View: sci.electronics
Article #17818Re: Vibrators, and a part-hunt.
From: sbishop
Date: Sun, 19 Jul 1987 05:32
Date: Sun, 19 Jul 1987 05:32
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In article <448@phoenix> kpmancus@phoenix.UUCP (Keith P. Mancus) writes: > Whoops, forgot the part-hunt. Does anybody know of a good synthesizer-type >chip with 2 or 3 voices and a mixer? Primary considerations are There is a chip that was (is?) made my TI, part number SN76477N. This device has a low frequency osc, vco, noise generator, and full envelope generator, and a three channel mixer as well as a variety of external inputs and controls on a single 28-pin DIP. The timing and frequency characteristics are controled by placing appropriate caps and resistors on the pins. The SN76488N has an internal amp which will drive an 8ohm speaker, the 77N has a low level output. Power is 4.5 to 12 volts (9 works best). If you use a bunch of these chips, you'll get the required number of voices. Brett L Maraldo
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: arc1-ca.pugleaf.net!utzoo!utgpu!water!watmath!sbishop From: sbishop@watmath.UUCP Newsgroups: sci.electronics Subject: Re: Vibrators, and a part-hunt. Message-ID: <13969@watmath.waterloo.edu> Date: Sun, 19-Jul-87 01:32:45 EDT Article-I.D.: watmath.13969 Posted: Sun Jul 19 01:32:45 1987 Date-Received: Sun, 19-Jul-87 04:35:16 EDT References: <446@phoenix.PRINCETON.EDU> <448@phoenix.PRINCETON.EDU> Reply-To: bmaraldo@watdcsu (Commander Brett L Maraldo) Organization: Unit 36 Research Lines: 17