Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!mips!apple!motcsd!lance From: lance@motcsd.csd.mot.com (lance.norskog) Newsgroups: comp.dsp Subject: Re: DSP project Message-ID: <3697@motcsd.csd.mot.com> Date: 18 Apr 91 18:24:46 GMT References: <6354@videovax.tv.tek.com> <8078@uceng.UC.EDU> Organization: Motorola CSD, Cupertino CA Lines: 24 schriste@uceng.UC.EDU (Steven V. Christensen) writes: >On a related (well, sort of) note, regarding Electronic Guitar Tuning, >that was precicely what our first Electronic Design project was this quarter. >And let me tell you, that it is mucho difficult to quantify a vibrating >guitar string without resorting to DSP technology (we were using strict >analog). > [ much frustration deleted ] According to the Hal Christiansen book (I've forgotten the title, but it's a huge book on computer music) you get much less harmonic junk if you put the pickup in the middle of the string. Pickups are down at the end particularly to get harmonics. And, of course, you want a separate pickup for each string. While we're on the subject of electronic musical instruments, are there any "lab i/o" MIDI boxes available? That is, you get a MIDI port, a DSP, and a bunch of A/D & D/A lines. You download programs via SYSEX and wire up your own stuff to the box. Lance Norskog of