Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!seismo!columbia!rutgers!clyde!burl!codas!mtune!mtuxo!osh From: osh@mtuxo.UUCP (d.oshinsky) Newsgroups: rec.music.synth,comp.sys.amiga,comp.sys.atari.st,comp.sys.ibm.pc,comp.sys.mac,rec.audio Subject: processing of digitized audio on PCs Message-ID: <2449@mtuxo.UUCP> Date: Wed, 21-Jan-87 17:38:22 EST Article-I.D.: mtuxo.2449 Posted: Wed Jan 21 17:38:22 1987 Date-Received: Thu, 22-Jan-87 18:52:05 EST Organization: AT&T Information Systems Labs, Holmdel NJ Lines: 58 Xref: mnetor rec.music.synth:192 comp.sys.amiga:1601 comp.sys.atari.st:1015 comp.sys.ibm.pc:1151 comp.sys.mac:896 rec.audio:393 *** 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) To get the discussion rolling, I've included a description below of a plug-in digital signal acquisition and processing board for the AT&T PC6300 and compatibles. Dalanco Spry Signal Processor for IBM PCs (condensed from Computer Music Journal): The Model 10 digital signal processor from Dalanco Spry is a coprocessor board for the IBM PC/AT/XT and compatibles. It features the 16/32 bit TI TMS 32010 DSP chip. The TMS 32010 is a fixed point uP that computes at 400 nsec for a multiply-accumulate operation and 60 msec for a 1024 point complex FFT. An IEEE-standard single precision floating point multiply takes 8.6 usec on the Model 10. Other features include three 16 bit timers to provide sampling rates ranging from 0.001 Hz to 200 kHz, and a 2-way 16 bit register for communications between the TMS and the IBM's CPU. Four kwords of dual-ported RAM and mutual interrupt capability between the 2 processors is provided. Software included with the system includes an inline assembler, a disassembler, a debugger, signal display software and other applications examples. An external I/O connector permits the addition of custom "piggyback" boards of various functions to be integrated with the system. This could be used for interfacing the device to other equipment. An upgrade from a 20 MHz version to a 25 MHz version is available as an option. The Model 10 costs $850 with onboard 12 bit 40 kHz A/D and D/A conversion. Contact: Dalanco Spry, Suite 241, 2900 Connecticut Ave. NW, Washington, DC 20008. Telephone (202) 232-7999. David Oshinsky {ihnp4|houxm|vax135}!mtuxo!osh P.S. If you have comments, questions, or further information to contribute, please send e-mail to the above address. If this posting generates enough interest, I'll summarize to the net. P.P.S. I have no connection whatsoever with Dalanco Spry. I have not actually used their Model 10 DSP board and therefore cannot guarantee that it meets the specifications given above.