Xref: utzoo rec.audio:30090 comp.dsp:1455 Newsgroups: rec.audio,comp.dsp Path: utzoo!censor!comspec!scocan!jfischer From: jfischer@sco.COM (Jonathan A. Fischer) Subject: Good speaker + DSP == perfect speaker? Organization: SCO Canada, Inc. Date: Fri, 22 Mar 1991 17:12:03 GMT Message-ID: <1991Mar22.171203.8665@sco.COM> Sender: news@sco.COM (News administration) Something that's really caught my interest lately (I suppose it was after reading a review of the Meridian D6000 "digital speaker") is the possibility of the following scenario: You buy a good speaker with no glaring flaws. Its frequency response is pretty good, varying +/- a couple of dB over yer basic 40-ish to 20K Hz range. Its phase accuracy varies +/- degrees over the spectrum (whatever's typical). So you buy a programmable DSP "package," containing the DSP unit (which also performs as a frequency generator), and a mike or Sound Pressure Level meter. You set up the SPL meter in your listening spot, press the "setup" button on the DSP unit, and it commences to send frequency sweeps through your sound system, reads the levels and the phase response. Finally, using these variables, it sets up a digital equalization + phase doctoring DSP program which will transform your sound system, no matter what your room's or your speaker's acoustical properties, into one with a completely flat frequency response curve, and with zero phase shift across the entire spectrum. Is this a pipe dream or is it feasible? -- Jonathan A. Fischer SCO Canada, Inc. jfischer@scocan.sco.COM Toronto, Ontario, Canada Usenet's first law of flamodynamics: For every opinion, there is an equal and opposite counter-opinion.