Article View: comp.sys.next.hardware
Article #1138Re: DSP chips are NOT dinosaurs
From: Izumi Ohzawa
Date: Thu, 01 Oct 1992 10:32
Date: Thu, 01 Oct 1992 10:32
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In article <1aehh5INNa0r@stephen.cs.ubc.ca> sritchie@cs.ubc.ca (Stuart Ritchie) writes: >In article <1ae4klINNpph@agate.berkeley.edu> izumi@pinoko.berkeley.edu writes: >>My DSP gets interrupted 150,000 times per second with each sample >>being 12 or 16 bits, and 68040 doesn't even notice this unless >>something interesting happens in the input samples. > >Is the DSP fielding interrupts at this rate, or is this while polling? >(polling is cheating) Interrupts, not polling. Some CD-quality stereo recording apps run with the DSP interrupted 88,200 times per sec to get 44.1k x 2 samples/sec. You get get a lot more than that, although doing anything with the obtained samples gets tougher as the data rate increases. -- Izumi Ohzawa [ $BBg_78^=;(J ] USMail: University of California, 360 Minor Hall, Berkeley, CA 94720 Telephone: (510) 642-6440 Fax: (510) 642-6341 Internet: izumi@pinoko.berkeley.edu (NeXT Mail OK)
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Path: arc1-ca.pugleaf.net!sparky!uunet!haven.umd.edu!darwin.sura.net!spool.mu.edu!agate!agate!usenet From: izumi@pinoko.berkeley.edu (Izumi Ohzawa) Newsgroups: comp.sys.next.hardware Subject: Re: DSP chips are NOT dinosaurs Date: 1 Oct 1992 10:32:09 GMT Organization: University of California, Berkeley Lines: 21 Distribution: world Message-ID: <1aek39INN17s@agate.berkeley.edu> References: <1aehh5INNa0r@stephen.cs.ubc.ca> Reply-To: izumi@pinoko.berkeley.edu NNTP-Posting-Host: moica.berkeley.edu