Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!watmath!clyde!rutgers!seismo!husc6!panda!genrad!decvax!tektronix!tekcrl!vice!tekfdi!videovax!bill From: bill@videovax.UUCP Newsgroups: rec.music.synth,comp.sys.amiga,comp.sys.atari.st,comp.sys.ibm.pc,comp.sys.mac,rec.audio Subject: Re: processing of digitized audio on PCs Message-ID: <4178@videovax.Tek.COM> Date: Fri, 23-Jan-87 12:37:26 EST Article-I.D.: videovax.4178 Posted: Fri Jan 23 12:37:26 1987 Date-Received: Sun, 25-Jan-87 05:41:35 EST References: <2449@mtuxo.UUCP> Reply-To: bill@videovax.Tek.COM (William K. McFadden) Organization: Tektronix Television Systems, Beaverton, Oregon Lines: 50 Xref: watmath rec.music.synth:193 comp.sys.amiga:1649 comp.sys.atari.st:1048 comp.sys.ibm.pc:1126 comp.sys.mac:919 rec.audio:392 In article <2449@mtuxo.UUCP> osh@mtuxo.UUCP (d.oshinsky) writes: >I would like to stimulate a discussion regarding add-on hardware >for personal computers which allows for acquisition and processing of >digitized audio (note: this does not include MIDI interface boards). >Such add-on hardware should have the following characteristics: > > * designed for use with a personal computer such as AT&T PC6300 and > compatibles (including the IBM PC :-), Commodore Amiga, Atari ST, > Apple Mac, etc. > > * includes A/D and D/A with at least 12 bits of resolution. > 14 or 16 bits would be preferable. > > * the hardware should be able to sustain a sampling rate of > at least 30 kHz. 40 kHz or more would be preferable. > > * may or may not include a digital signal processing chip. > (i.e., processing may be done by uP in PC, or by coprocessor) I have a pamphlet from Ariel Corp. on their DSP-16 "Real-Time Data Acquisition Processor" for the IBM PC/XT/AT. Its specs are: I/O: 16 bit linear PCM, 2 channels. Max. sample rate: 50KHz. Electronically balanced inputs with infinitely variable gain & offset. All connections via mini-stereo jacks. Anti-alias filters a 3-pole Tschbyschev with a rolloff at 20 KHz. Analog: Typical dynamic range: 85 dB. THD: 0.08%. Frequency response at 50 KHz sample rate: DC - 16 KHz +/- 0.5 dB. Digital: 5 MHz TMS 32020 (user programmable) with 32K bytes of no wait-state RAM, configurable as data and/or program memory. 256K words or 1M word (optional) dynamic buffer RAM, giving recording times of 5.25 and 21 seconds, respectively, at maximum sample rate. Sample rate adjustable from 5 to 50 KHz. Software: Comes with an assembly language driver with interfaces to many languages (e.g., BASIC, C, Pascal, FORTRAN, Macro Assembler). Also comes with 6 applications programs: Data Acquisition, Digital Audio Effects, Digital Storage Oscilloscope, Audio Loop Editor, Waveform Synthesizer, Program Development System. Other: Uses a full-size expansion slot and derives its power from the host computer (2.2 amps). Analog supplies are derived on-board. I can get more specific if anyone wants to know. I do not have pricing and availability information, but can give you the address of the company. DISCLAIMER: The above specs were paraphrased from the manufacturer's literature. I have not seen or used this product and have no connection with Ariel Corporation. -- Bill McFadden Tektronix, Inc. P.O. Box 500 MS 58-639 Beaverton, OR 97077 UUCP: ...{ucbvax,ihnp4,uw-beaver,decvax}!tektronix!videovax!bill GTE: (503) 627-6920 "How can I prove I am not crazy to people who are?"