Subject: MAX Digest - 23 Oct 1999 to 24 Oct 1999 (#1999-307)
Date: Mon, 25 Oct 1999 00:00:16 -0400
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There are 3 messages totalling 92 lines in this issue.

Topics of the day:

  1. synchronizing faders
  2. Variable Speed, Same Pitch
  3. analog - DV converters (desktop)

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Date:Sat, 23 Oct 1999 20:40:35 -0400
From:Neal Farwell <nfarwell@FAS.HARVARD.EDU>
Subject: synchronizing faders

Hi All:

I'd value some ideas on the following:


Say you have "ctlin"s from two MIDI faders that you might move at the same
time, to control some kind of X-Y process. I've been doing this with my
joystick-modified faderbaby.

Ideally, you want data to arrive as synchronously-sampled x,y pairs, so
that you can move smoothly round your x-y space.

But real faderboxes tend to alternate values from those faders that are
changing. So you get staircases in the x-y space rather than smooth
diagonals, eg in the patch below.

Is it possible to turn this kind of data into the "smooth" xy data? It's
not just a case of delaying one coordinate til the other arrives - because
you might choose to move in just the x or y direction some of the time. It
strikes me that it's a sampling/interpolation problem, with the
complication that the incoming data period is erratic too.

I had some success inserting a "line" object just after each ctlin, but
with the wierd effect that each time you stopped moving the joystick, the
LCD trace redrew itself in reverse...

I also wondered about doing some kind of filtering at MSP audio rate (for
efficiency) then resampling back to Max rates.

Thanks for your suggestions...

Neal


max v2;
#N vpatcher 227 139 781 579;
#P newex 372 45 54 196617 ctlin a 7 2;
#P newex 245 44 54 196617 ctlin a 7 1;
#P message 211 172 35 196617 clear;
#P button 330 82 15 0;
#P newex 317 127 28 196617 pack;
#P message 317 161 65 196617 LineTo \$1 \$2;
#P user LCD 317 204 193 176;
#P connect 4 0 0 0;
#P connect 3 0 2 0;


#P connect 2 0 1 0;
#P connect 1 0 0 0;
#P connect 6 0 3 0;
#P connect 5 0 2 0;
#P connect 6 0 2 1;
#P pop;

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Date:Sun, 24 Oct 1999 11:56:06 +0900
From:sako <sako@MARIN.OR.JP>
Subject: Re: Variable Speed, Same Pitch

My granular patch 2.0 is available at

http://www.marin.or.jp/sako/maxpatch.htm

Thank you

sako
(nobuyasu sakonda)

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Date:Sun, 24 Oct 1999 13:27:33 -0400
From:David Crandall <dcrand1@GL.UMBC.EDU>
Subject: analog - DV converters (desktop)

Just wondering if anyone has seen Sony's DVMC-DA1 Media Converter
(analog-firewire & back) available for sale in the US. I had seen an
announcement that it was being sold in Japan, but hadn't seen it here.

dc

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End of MAX Digest - 23 Oct 1999 to 24 Oct 1999 (#1999-307)
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