From analogue-request@magnus.acs.ohio-state.edu Wed Mar 31 23:41:53 1993 Received: by quark.magnus.acs.ohio-state.edu (5.65/3.910213) id AA16000; Wed, 31 Mar 93 23:41:22 -0500 Errors-To: analogue-request@magnus.acs.ohio-state.edu Sender: analogue-request@magnus.acs.ohio-state.edu Received: from ccrma.Stanford.EDU by quark.magnus.acs.ohio-state.edu (5.65/3.910213) id AA15995; Wed, 31 Mar 93 23:41:21 -0500 Received: from cmn8 by ccrma.Stanford.EDU (NX5.67c/NX3.0M) id AA22806; Wed, 31 Mar 93 20:35:44 -0800 Message-Id: <9304010435.AA22806@ccrma.Stanford.EDU> Received: by cmn8 (NX5.67c/NeXT-1.0) id AA01133; Wed, 31 Mar 93 20:35:40 -0800 Date: Wed, 31 Mar 93 20:35:40 -0800 From: phrh@ccrma.Stanford.EDU Received: by NeXT.Mailer (1.87.1) Received: by NeXT Mailer (1.87.1) To: analogue@magnus.acs.ohio-state.edu Subject: TRIGGER IN on my ARP Reply-To: phrh@ccrma.Stanford.EDU Status: OR Has anyone out there figured out a way to trigger their LFO rate by using a trigger in on an ARP AXXE, 2600 or Odyssey? Much obliged, peter h From analogue-request@magnus.acs.ohio-state.edu Mon Mar 15 13:38:10 1993 Received: by quark.magnus.acs.ohio-state.edu (5.65/3.910213) id AA20217; Mon, 15 Mar 93 13:37:59 -0500 Errors-To: analogue-request@magnus.acs.ohio-state.edu Sender: analogue-request@magnus.acs.ohio-state.edu Received: from ncar.ucar.edu by quark.magnus.acs.ohio-state.edu (5.65/3.910213) id AA20212; Mon, 15 Mar 93 13:37:56 -0500 Received: from stout.atd.ucar.edu by ncar.ucar.EDU (5.65/ NCAR Central Post Office 07/14/92) id AA29323; Mon, 15 Mar 93 11:37:54 MST Message-Id: <9303151837.AA12187@stout.atd.ucar.EDU> Received: from barleywine.atd.ucar.edu by stout.atd.ucar.EDU (5.65/ NCAR Mail Server 04/10/90) id AA12187; Mon, 15 Mar 93 11:37:53 MST To: ANALOGUE@magnus.acs.ohio-state.edu Subject: Odyssey Success Date: Mon, 15 Mar 1993 11:37:51 -0700 From: Forrest Cook Status: OR Well, after sitting in my basement lab all day yesterday and staring at my screen until I got Marty Feldman eyes, I finally got my 6811 board to make my old Odyssey talk via the MIDI port. Thanks to all who set me straight on the control voltages. Here's what I ended up using to drive the Odyssey: Gate: 0V = off, 15V = on This is the only essential gating signal and I control it with MIDI note on/note off commands. Trig: 0V = off, 15V = on A short pulse will retrigger the EG and could be used for interesting effects, I haven't yet figured out how to make it work with MIDI. Control Voltage: -2 (or lower) to +5 (or higher) 1V/Octave and the notes are on a linear scale which is very easy to implement in assembly language, i.e. Vout = K1 + Note# * K2 I was actually able to play a MIDI sequence on the Odyssey, somewhat out of tune. It's real nice being able to modify the sound while it is playing. What a novel user interface idea: 1 knob per parameter :-) I must say that I like some of the sounds you can get out of an FM synth but what a royal pain to tweak and modifying the sound on the fly is not very effective. " A one celled Hammond ORGANism living on the bottom of your shoe " - FZ Forrest Cook cook@stout.atd.ucar.edu WB0RIO {husc6|rutgers|ames|gatech}!ncar!stout!cook From analogue-request@magnus.acs.ohio-state.edu Mon Mar 8 02:53:35 1993 Received: by quark.magnus.acs.ohio-state.edu (5.65/3.910213) id AA00473; Mon, 8 Mar 93 02:53:18 -0500 Errors-To: analogue-request@magnus.acs.ohio-state.edu Sender: analogue-request@magnus.acs.ohio-state.edu Received: from nic.lth.se by quark.magnus.acs.ohio-state.edu (5.65/3.910213) id AA00468; Mon, 8 Mar 93 02:53:15 -0500 Received: from axisab.axis.se by mail.lth.se with bsmtp (Smail3.1.28.1 #2) id m0nVcdU-000MTuC; Mon, 8 Mar 93 08:52 MET Received: by axisab.axis.se (/\==/\ Smail3.1.25.1 #25.6) id ; Mon, 8 Mar 93 08:50 MET Message-Id: From: ricard@axis.se (Ricard Wolf) Date: Mon, 8 Mar 93 08:50:12 MET X-Mailer: Mail User's Shell (7.0.1 12/13/89) To: Forrest Cook , Peter de Waal Subject: Re: Arp Odyssey control voltages? Cc: analogue@magnus.acs.ohio-state.edu Status: OR > Thanks for the info. I do recall hearing a second note out of the ARP > when I pressed two keys, but I think that the envelope stuff follows only > the first note. > > Forrest Cook > cook@stout.atd.ucar.edu WB0RIO > {husc6|rutgers|ames|gatech}!ncar!stout!cook The Odessey works as follows: playing the keyboard monophonically results in a standard response, i.e. multitriggered monophonic with top (or is it bottom...?) note priority. Pressing down a second key puts the second oscillator on the new key, so you get two-note polyhony, somewhat similar to the Korg Mono/Poly Unison/Share mode, albeit with only two oscillators. My Odessey has problems multitriggering when two keys are pressed, but it could be a malfunction. At any rate, there is no EG retrigger when the second key is pressed, so the function is best used when playing two-voice lines (like brass stabs) where both keys are playes simultaneously. Also, since as soon you release one of the keys, the two oscillators unite in pitch, you can't play two notes, and let them both hold while you release the keys. A bit of an odd setup; any other synths with similar capabilities? /Ricard -- Ricard Wolf / | \ / | /- email: ricard@axis.se Axis Communications AB /__| \/ | \__ uucp: axisab.se!ricard S - 223 70 LUND / | /\ | \ Tel: +46 46 19 18 63 SWEDEN / | / \ | \__/ Fax: +46 46 13 61 30 -- "I'm the operator with my pocket calculator" -- From analogue-request@magnus.acs.ohio-state.edu Sat Mar 6 00:24:39 1993 Received: by quark.magnus.acs.ohio-state.edu (5.65/3.910213) id AA18288; Sat, 6 Mar 93 00:24:30 -0500 Errors-To: analogue-request@magnus.acs.ohio-state.edu Sender: analogue-request@magnus.acs.ohio-state.edu Received: from acid-rain.lucid.com by quark.magnus.acs.ohio-state.edu (5.65/3.910213) id AA18283; Sat, 6 Mar 93 00:24:28 -0500 Received: by acid-rain.lucid.com (4.1/SMI-4.1) id AA11095; Fri, 5 Mar 93 21:24:27 PST Date: Fri, 5 Mar 93 21:24:27 PST From: till@lucid.com (Don Tillman) Message-Id: <9303060524.AA11095@acid-rain.lucid.com> To: analogue@magnus.acs.ohio-state.edu In-Reply-To: Peter de Waal's message of Fri, 05 Mar 1993 22:34:39 +0100 <9303052134.AA23080.waal@gans.cwi.nl> Subject: Arp Odyssey control voltages? Reply-To: till@lucid.com Status: OR Date: Fri, 05 Mar 1993 22:34:39 +0100 From: Peter de Waal In message <9303051712.AA23949@stout.atd.ucar.EDU>you write: > Greetings, this is my first post to this list. > I've got an ARP Odyssey that I am making a MIDI controller for and was > wondering if anybody knows what voltages the trigger and hold inputs > take. These inputs are "digital" but I don't know how many volts. > I got the synth for $250, so I can't really complain about a lack of > a manual. I'm also interested in knowing the values for the volts in > and notes out for the 0-10V VCO input. I guess that the ARP Odyssey, being an American standard synth, adheres to the 1 volt per Octave standard for CV and VCO inputs. Correct. (Though I'm not sure that the word "standard" is appropriate here.) The GATE standard voltages are 0/+15 volt I think, i.e. 0 Volt if no key is pressed, and +15V if a key is pressed. I don't think there is a standard for gate and trigger, but my ARP 2600 puts out a gate voltage of 0/9.5 volts, and that drives my ARP Odyssey just fine. If I remember correctly, the Odyssey was capable of two-note polyphony. i.e. you could play two keys at the same time. Is that true? Yep, but it's kinda lame since there's only one VCF and only one VCA. The basic idea is that on a resistor ladder type of keyboard you typically use the left output (the lowest note) to drive the VCOs. But it turns out that the right output (the highest note) is available for free (almost, from an electrical standpoint that is). So on the Odyssey, VCO1 gets the lowest note and VCO2 gets the highest note and for any single-note work they're the same note. In practice I find this feature occasionally useful, but at times (especially when using the ring modulator on complex passages) I'd like to be able to turn it off -- slightly inaccurate keyboard technique turns into hideous belching noises. -- Don From analogue-request@magnus.acs.ohio-state.edu Fri Mar 5 16:37:07 1993 Received: by quark.magnus.acs.ohio-state.edu (5.65/3.910213) id AA04278; Fri, 5 Mar 93 16:36:56 -0500 Errors-To: analogue-request@magnus.acs.ohio-state.edu Sender: analogue-request@magnus.acs.ohio-state.edu Received: from ncar.ucar.edu by quark.magnus.acs.ohio-state.edu (5.65/3.910213) id AA04273; Fri, 5 Mar 93 16:36:52 -0500 Received: from stout.atd.ucar.edu by ncar.ucar.EDU (5.65/ NCAR Central Post Office 07/14/92) id AA07945; Fri, 5 Mar 93 14:36:50 MST Message-Id: <9303052136.AA29011@stout.atd.ucar.EDU> Received: from barleywine.atd.ucar.edu by stout.atd.ucar.EDU (5.65/ NCAR Mail Server 04/10/90) id AA29011; Fri, 5 Mar 93 14:36:49 MST To: Peter de Waal Cc: analogue@magnus.acs.ohio-state.edu Subject: Re: Arp Odyssey control voltages? In-Reply-To: Your message of "Fri, 05 Mar 1993 22:34:39 +0100." <9303052134.AA23080.waal@gans.cwi.nl> Date: Fri, 05 Mar 1993 14:36:47 -0700 From: Forrest Cook Status: OR Thanks for the info. I do recall hearing a second note out of the ARP when I pressed two keys, but I think that the envelope stuff follows only the first note. Forrest Cook cook@stout.atd.ucar.edu WB0RIO {husc6|rutgers|ames|gatech}!ncar!stout!cook From analogue-request@magnus.acs.ohio-state.edu Fri Mar 5 12:12:42 1993 Received: by quark.magnus.acs.ohio-state.edu (5.65/3.910213) id AA18609; Fri, 5 Mar 93 12:12:26 -0500 Errors-To: analogue-request@magnus.acs.ohio-state.edu Sender: analogue-request@magnus.acs.ohio-state.edu Received: from ncar.ucar.edu by quark.magnus.acs.ohio-state.edu (5.65/3.910213) id AA18596; Fri, 5 Mar 93 12:12:22 -0500 Received: from stout.atd.ucar.edu by ncar.ucar.EDU (5.65/ NCAR Central Post Office 07/14/92) id AA13078; Fri, 5 Mar 93 10:12:19 MST Message-Id: <9303051712.AA23949@stout.atd.ucar.EDU> Received: from barleywine.atd.ucar.edu by stout.atd.ucar.EDU (5.65/ NCAR Mail Server 04/10/90) id AA23949; Fri, 5 Mar 93 10:12:18 MST To: analogue@magnus.acs.ohio-state.edu Subject: Arp Odyssey control voltages? Date: Fri, 05 Mar 1993 10:12:17 -0700 From: Forrest Cook Status: OR Greetings, this is my first post to this list. I've got an ARP Odyssey that I am making a MIDI controller for and was wondering if anybody knows what voltages the trigger and hold inputs take. These inputs are "digital" but I don't know how many volts. I got the synth for $250, so I can't really complain about a lack of a manual. I'm also interested in knowing the values for the volts in and notes out for the 0-10V VCO input. My controller is a 68HC11 based machine with MIDI in/out, 2 channels of 16 bit DAC output, 2 8 bit ADC inputs, a power-glove input (future ware) and a trackball input. I've been living like a mole in my basement lab for the last several months and have most of the i/o stuff working. Forrest Cook cook@stout.atd.ucar.edu WB0RIO {husc6|rutgers|ames|gatech}!ncar!stout!cook