Cycling 74 » Topic: Frequency to Midi WITH pitch-bend? http://cycling74.com/forums/topic/frequency-to-midi-with-pitch-bend/feed Wed, 19 Jun 2013 11:38:20 +0000 http://bbpress.org/?v=2.2.4 http://cycling74.com/forums/topic/frequency-to-midi-with-pitch-bend/#post-35667 <![CDATA[Frequency to Midi WITH pitch-bend?]]> http://cycling74.com/forums/topic/frequency-to-midi-with-pitch-bend/#post-35667 Tue, 05 Feb 2008 02:22:57 +0000 donundeen Hi,
I’ve been looking at ftom for converting frequency numbers to midi note numbers, but I’d also like to get more discrete pitch control of my synthesizer, using pitch bend messages as well.
Assuming I can set the pitch wheel width on my Novation to 1/2 step, what’s the best way to convert frequency into midi note, and pitch-bend values? The equation for ftom ( expr log10($f1/8.175798) / log10(1.0594633) ) sort of blows my mind, so I’m thinking calculating the pitch-bend would be some sort of similar type of equation.
Surely someone else has already figured this out?

thanks all!
don

]]> http://cycling74.com/forums/topic/frequency-to-midi-with-pitch-bend/#post-121817 <![CDATA[Re: Frequency to Midi WITH pitch-bend?]]> http://cycling74.com/forums/topic/frequency-to-midi-with-pitch-bend/#post-121817 Tue, 05 Feb 2008 08:12:56 +0000 barry threw I don’t feel particularly good about this patch, but I think it does
what you want…

b

#P window setfont “Sans Serif” 9.;
#P window linecount 1;
#P comment 430 250 54 196617 Pitch Bend;
#P number 395 250 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P newex 395 229 109 196617 scale -0.5 0.5 -64 63;
#P newex 551 206 33 196617 – 1.;
#P newex 395 187 166 196617 if $f1 < 0.5 then $f1 else out2 $f1;
#P number 18 250 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P newex 18 146 374 196617 expr int($f1)+($f1>=0)*(($f1-
int($f1))>=0.5)-($f1<0)*(($f1-int($f1))< =-0.5);
#P newex 395 146 29 196617 t f i;
#P newex 395 167 29 196617 – 0.;
#P newex 18 123 228 196617 expr log10($f1/8.175798) / log10(1.0594633);
#P flonum 18 106 66 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P comment 53 250 110 196617 Base MIDI Note Number;
#P connect 3 0 7 0;
#P connect 2 0 5 0;
#P fasten 2 0 4 0 23 143 400 143;
#P connect 9 0 10 0;
#P fasten 8 0 9 0 556 226 400 226;
#P connect 7 0 9 0;
#P connect 7 1 8 0;
#P connect 5 0 6 0;
#P connect 4 1 3 1;
#P connect 4 0 3 0;
#P connect 1 0 2 0;
#P window clipboard copycount 12;

On Feb 4, 2008, at 6:22 PM, don undeen wrote:

>
> Hi,
> I’ve been looking at ftom for converting frequency numbers to midi
> note numbers, but I’d also like to get more discrete pitch control
> of my synthesizer, using pitch bend messages as well.
> Assuming I can set the pitch wheel width on my Novation to 1/2 step,
> what’s the best way to convert frequency into midi note, and pitch-
> bend values? The equation for ftom ( expr log10($f1/8.175798) /
> log10(1.0594633) ) sort of blows my mind, so I’m thinking
> calculating the pitch-bend would be some sort of similar type of
> equation.
> Surely someone else has already figured this out?
>
> thanks all!
> don

–
Barry Threw
Media Art and Technology

San Francisco, CA
Work: 857-544-3967
Email: bthrew (at) gmail (dot) com
IM: captogreadmore (AIM)

http://www.barrythrew.com

“The greatest of the changes that science has brought us is the acuity
of change; the greatest novelty the extent of novelty.”
- J. Robert Oppenheimer

]]> http://cycling74.com/forums/topic/frequency-to-midi-with-pitch-bend/#post-121818 <![CDATA[Re: Frequency to Midi WITH pitch-bend?]]> http://cycling74.com/forums/topic/frequency-to-midi-with-pitch-bend/#post-121818 Tue, 05 Feb 2008 13:44:03 +0000 Stefan Tiedje don undeen schrieb:
> The equation for ftom ( expr log10($f1/8.175798) / log10(1.0594633) )
> sort of blows my mind, so I’m thinking calculating the pitch-bend
> would be some sort of similar type of equation. Surely someone else
> has already figured this out?

You would just translate the fractional part of the ftom result to a
pitchbend value, but beware, the range of the pitchbend is not
standardized, and could be anything between a half step and two octaves.
You define it on the receiving synth. Just scale the fractional part to
the pitchbend value (not tested):

#P window setfont “Sans Serif” 9.;
#P number 227 178 44 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P number 181 178 44 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P number 181 128 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P window linecount 1;
#P newex 181 107 44 196617 !/ 8192;
#P newex 181 155 44 196617 !- 8192;
#P newex 227 155 44 196617 + 8191;
#P number 181 82 35 9 1 24 3 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P newex 21 272 91 196617 noteout;
#P newex 21 228 92 196617 makenote 64 1000;
#P newex 115 228 120 196617 scale -0.5 0.5 0 16383;
#N vpatcher 20 74 620 474;
#P window setfont “Sans Serif” 9.;
#P window linecount 1;
#P newex 131 114 27 196617 + 0.;
#P newex 85 114 27 196617 + 0.;
#P newex 143 158 32 196617 !- 0.;
#P newex 131 135 44 196617 – 0.5;
#P newex 131 72 27 196617 t f f;
#P newex 148 93 27 196617 > 0.;
#P newex 85 135 44 196617 – 0.5;
#P newex 85 72 44 196617 t f f f;
#P newex 102 93 27 196617 > 0.;
#P newex 50 50 45 196617 sel bang;
#P newex 85 158 56 196617 int;
#P inlet 50 30 15 0;
#P outlet 143 180 15 0;
#P outlet 85 180 15 0;
#P connect 2 0 4 0;
#P connect 4 1 6 0;
#P connect 6 0 12 0;
#P connect 12 0 7 0;
#P fasten 4 0 3 0 55 155 90 155;
#P connect 7 0 3 0;
#P connect 3 0 0 0;
#P connect 6 1 5 0;
#P connect 5 0 12 1;
#P connect 9 0 13 0;
#P connect 13 0 10 0;
#P connect 10 0 3 1;
#P connect 3 0 11 0;
#P connect 11 0 1 0;
#P connect 9 1 8 0;
#P connect 8 0 13 1;
#P connect 6 2 11 1;
#P pop;
#P newobj 74 161 51 196617 p rint;
#P flonum 115 194 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P newex 115 272 50 196617 ctlout;
#P newex 115 250 50 196617 xbendout;
#P number 74 194 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P flonum 74 134 64 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P flonum 74 82 35 9 0 0 64 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P newex 74 108 55 196617 ftom 440.;
#P comment 73 59 50 196617 frequnecy;
#P comment 179 57 100 196617 pitchbend range;
#P connect 17 0 15 0;
#P fasten 17 0 14 0 186 150 232 150;
#P connect 19 0 10 4;
#P connect 18 0 10 3;
#P connect 15 0 18 0;
#P connect 14 0 19 0;
#P connect 16 0 17 0;
#P connect 13 0 16 0;
#P connect 11 1 12 1;
#P connect 11 0 12 0;
#P connect 8 0 10 0;
#P connect 10 0 6 0;
#P connect 4 0 9 0;
#P connect 9 1 8 0;
#P connect 9 0 5 0;
#P connect 6 0 7 0;
#P connect 3 0 2 0;
#P connect 2 0 4 0;
#P window clipboard copycount 20;

–
Stefan Tiedje————x——-
–_____———–|————–
–(_|_ —-|—–|—–()——-
– _|_)—-|—–()————–
———-()——–www.ccmix.com

]]> http://cycling74.com/forums/topic/frequency-to-midi-with-pitch-bend/#post-121819 <![CDATA[Re: Frequency to Midi WITH pitch-bend?]]> http://cycling74.com/forums/topic/frequency-to-midi-with-pitch-bend/#post-121819 Tue, 05 Feb 2008 13:51:28 +0000 Stefan Tiedje Stefan Tiedje schrieb:
> Just scale the fractional part to the pitchbend value (not tested):

Just realised, the proposed scaling is bending over the half step
instead of a quarter step, but you get the idea. (I’ll leave the further
bug fixing to you… ;-)

#P window setfont “Sans Serif” 9.;
#P number 215 178 44 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P number 169 178 44 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P number 169 129 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P window linecount 1;
#P newex 169 107 52 196617 !/ 4095;
#P newex 169 155 44 196617 !- 8192;
#P newex 215 155 44 196617 + 8191;
#P number 169 82 35 9 1 24 3 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P newex 21 272 91 196617 noteout;
#P newex 21 228 92 196617 makenote 64 1000;
#P newex 115 228 135 196617 scale -0.5 0.5 4096 12286;
#N vpatcher 20 74 620 474;
#P window setfont “Sans Serif” 9.;
#P newex 131 114 27 196617 + 0.;
#P newex 85 114 27 196617 + 0.;
#P newex 143 158 32 196617 !- 0.;
#P newex 131 135 44 196617 – 0.5;
#P newex 131 72 27 196617 t f f;
#P newex 148 93 27 196617 > 0.;
#P newex 85 135 44 196617 – 0.5;
#P newex 85 72 44 196617 t f f f;
#P newex 102 93 27 196617 > 0.;
#P newex 50 50 45 196617 sel bang;
#P newex 85 158 56 196617 int;
#P inlet 50 30 15 0;
#P outlet 143 180 15 0;
#P outlet 85 180 15 0;
#P connect 2 0 4 0;
#P connect 4 1 6 0;
#P connect 6 0 12 0;
#P connect 12 0 7 0;
#P fasten 4 0 3 0 55 155 90 155;
#P connect 7 0 3 0;
#P connect 3 0 0 0;
#P connect 6 1 5 0;
#P connect 5 0 12 1;
#P connect 9 0 13 0;
#P connect 13 0 10 0;
#P connect 10 0 3 1;
#P connect 3 0 11 0;
#P connect 11 0 1 0;
#P connect 9 1 8 0;
#P connect 8 0 13 1;
#P connect 6 2 11 1;
#P pop;
#P newobj 74 161 51 196617 p rint;
#P flonum 115 194 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P newex 115 272 50 196617 ctlout;
#P newex 115 250 50 196617 xbendout;
#P number 74 194 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P flonum 74 134 64 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P flonum 74 82 35 9 0 0 64 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P newex 74 108 55 196617 ftom 440.;
#P comment 73 59 50 196617 frequnecy;
#P comment 167 57 100 196617 pitchbend range;
#P connect 17 0 15 0;
#P fasten 17 0 14 0 174 150 220 150;
#P connect 10 0 6 0;
#P connect 8 0 10 0;
#P connect 18 0 10 3;
#P connect 19 0 10 4;
#P connect 16 0 17 0;
#P connect 13 0 16 0;
#P connect 15 0 18 0;
#P connect 14 0 19 0;
#P connect 11 1 12 1;
#P connect 11 0 12 0;
#P connect 4 0 9 0;
#P connect 9 1 8 0;
#P connect 9 0 5 0;
#P connect 6 0 7 0;
#P connect 3 0 2 0;
#P connect 2 0 4 0;
#P window clipboard copycount 20;

–
Stefan Tiedje————x——-
–_____———–|————–
–(_|_ —-|—–|—–()——-
– _|_)—-|—–()————–
———-()——–www.ccmix.com

]]> http://cycling74.com/forums/topic/frequency-to-midi-with-pitch-bend/#post-121820 <![CDATA[Re: Frequency to Midi WITH pitch-bend?]]> http://cycling74.com/forums/topic/frequency-to-midi-with-pitch-bend/#post-121820 Tue, 05 Feb 2008 16:03:49 +0000 Gary Lee Nelson This brings back memories. Before multi-timbral synthesizers there was a
dinosaur called the Yamaha TX816. It was 8 TX7 in a box. Each could play
one timbre at a time and reach had its own pitch bend wheel. To achieve
microtonality we used the fractional part of a midi number to set the pitch
bend position (see patch below). In my 1988 piece “Fractal Mountains” (link
below) you can hear this. It in 96 tones per octave.

http://www.timara.oberlin.edu/~gnelson/mp3s/Long.mp3s.html

NOTE: Pitch bend changes everything in the channel so notes already sounding
will bend too.

#P window setfont “Sans Serif” 9.;
#P window linecount 1;
#P newex 290 206 27 196617 + 1.;
#P newex 290 181 29 196617 * 8.;
#P flonum 209 211 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P newex 152 319 43 196617 noteout;
#P newex 152 279 88 196617 makenote 64 500;
#P newex 195 252 44 196617 bendout;
#P newex 195 173 35 196617 * 64.;
#P newex 195 146 31 196617 % 1.;
#P newex 152 146 27 196617 int;
#P flonum 106 148 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P newex 106 122 31 196617 mtof;
#P flonum 152 73 84 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
#P comment 335 195 54 196617 channel;
#P connect 11 0 12 0;
#P connect 12 0 7 1;
#P connect 12 0 8 2;
#P connect 5 0 6 0;
#P connect 5 0 11 0;
#P connect 1 0 2 0;
#P connect 1 0 4 0;
#P connect 1 0 5 0;
#P connect 6 0 7 0;
#P connect 6 0 10 0;
#P connect 8 0 9 0;
#P connect 8 1 9 1;
#P connect 4 0 8 0;
#P connect 2 0 3 0;
#P window clipboard copycount 13;

On 2/5/08 3:12 AM, “barry threw” wrote:

> I don’t feel particularly good about this patch, but I think it does
> what you want…
>
> b
>
> #P window setfont “Sans Serif” 9.;
> #P window linecount 1;
> #P comment 430 250 54 196617 Pitch Bend;
> #P number 395 250 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
> #P newex 395 229 109 196617 scale -0.5 0.5 -64 63;
> #P newex 551 206 33 196617 – 1.;
> #P newex 395 187 166 196617 if $f1 < 0.5 then $f1 else out2 $f1;
> #P number 18 250 35 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
> #P newex 18 146 374 196617 expr int($f1)+($f1>=0)*(($f1-
> int($f1))>=0.5)-($f1<0)*(($f1-int($f1))< =-0.5);
> #P newex 395 146 29 196617 t f i;
> #P newex 395 167 29 196617 – 0.;
> #P newex 18 123 228 196617 expr log10($f1/8.175798) / log10(1.0594633);
> #P flonum 18 106 66 9 0 0 0 3 0 0 0 221 221 221 222 222 222 0 0 0;
> #P comment 53 250 110 196617 Base MIDI Note Number;
> #P connect 3 0 7 0;
> #P connect 2 0 5 0;
> #P fasten 2 0 4 0 23 143 400 143;
> #P connect 9 0 10 0;
> #P fasten 8 0 9 0 556 226 400 226;
> #P connect 7 0 9 0;
> #P connect 7 1 8 0;
> #P connect 5 0 6 0;
> #P connect 4 1 3 1;
> #P connect 4 0 3 0;
> #P connect 1 0 2 0;
> #P window clipboard copycount 12;
>
>
> On Feb 4, 2008, at 6:22 PM, don undeen wrote:
>
>>
>> Hi,
>> I’ve been looking at ftom for converting frequency numbers to midi
>> note numbers, but I’d also like to get more discrete pitch control
>> of my synthesizer, using pitch bend messages as well.
>> Assuming I can set the pitch wheel width on my Novation to 1/2 step,
>> what’s the best way to convert frequency into midi note, and pitch-
>> bend values? The equation for ftom ( expr log10($f1/8.175798) /
>> log10(1.0594633) ) sort of blows my mind, so I’m thinking
>> calculating the pitch-bend would be some sort of similar type of
>> equation.
>> Surely someone else has already figured this out?
>>
>> thanks all!
>> don
>
> –
> Barry Threw
> Media Art and Technology
>
> San Francisco, CA
> Work: 857-544-3967
> Email: bthrew (at) gmail (dot) com
> IM: captogreadmore (AIM)
> http://www.barrythrew.com
>
> “The greatest of the changes that science has brought us is the acuity
> of change; the greatest novelty the extent of novelty.”
> – J. Robert Oppenheimer
>

Cheers
Gary Lee Nelson
Oberlin College
http://www.timara.oberlin.edu/GaryLeeNelson

]]> http://cycling74.com/forums/topic/frequency-to-midi-with-pitch-bend/#post-121821 <![CDATA[Re: Frequency to Midi WITH pitch-bend?]]> http://cycling74.com/forums/topic/frequency-to-midi-with-pitch-bend/#post-121821 Tue, 05 Feb 2008 17:35:16 +0000 nick rothwell / cassiel On 5 Feb 2008, at 16:03, Gary Lee Nelson wrote:

> This brings back memories. Before multi-timbral synthesizers there
> was a
> dinosaur called the Yamaha TX816. It was 8 TX7 in a box.

To be pedantic: eight TF1′s. (There was also a rack unit called a
TX216, which was two TF1′s and a chunk of empty space…)

– N.

Nick Rothwell / Cassiel.com Limited
http://www.cassiel.com
http://www.myspace.com/cassieldotcom
http://www.last.fm/music/cassiel
http://www.reverbnation.com/cassiel
http://www.linkedin.com/in/cassiel
http://www.loadbang.net

]]>