Talk:Tuning RPNs - Revision history

Mike Battaglia: 1 revision imported: Moving archived Wikispaces discussion to subpage

2018-10-01T18:02:44Z

1 revision imported: Moving archived Wikispaces discussion to subpage

← Older revision	Revision as of 18:02, 1 October 2018
(No difference)

Wikispaces>FREEZE at 18:01, 1 October 2018

2018-10-01T18:01:16Z

← Older revision		Revision as of 18:01, 1 October 2018
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	~~= ARCHIVED WIKISPACES DISCUSSION BELOW =~~		{{WSArchiveLink}}
	~~'''All discussion below is archived from the Wikispaces export in its original unaltered form.'''~~
	~~----~~

	~~== 8192 - 1 ==~~

	~~I have a question about,~~

	~~frequency = 440 * 2 ^ [ (outputNote - 69) / 12 + (pitchBend / 8192 - 1) / 6 ].~~

	Why the (8192 – 1) and not (8192)? The rang of pitch bend is –8192 to +8191 with 0 being no bend the total range is 16383. Using (8192 – 1) would give you true +200 ¢ but would give you more than 200 ¢ negative. There for the ranges of pitch bend would over lap when changing notes by a tone. Using 8192 there would be on over lap. Are there any synthesizers that use (8192 – 1)? That seems like a more complicated math for the synthesizers.

	~~Using + or – 50 ¢ I would think you would not want the over lap either,~~

	~~requency = 440 * 2 ^ [ (ON - 69) / 12 + (PB / 8192) / 24 ].~~

	~~So to get a +50 ¢ PB you would go to,~~

	~~requency = 440 * 2 ^ [ ((ON + 1) - 69) / 12 + (-8192 / 8192) / 24 ].~~

	~~And to get a –50 ¢ PB you would go to,~~

	~~requency = 440 * 2 ^ [ ((ON) - 69) / 12 + (-8192 / 8192) / 24 ].~~

	~~Thank you,~~

	ƒg

	~~- '''gillmre''' September 27, 2013, 08:56:51 PM UTC-0700~~
	~~----~~
	~~You misunderstand, my friend.~~

	~~1) (pitchBend / 8192 - 1) / 6 is really ((pitchBend / 8192) - 1) / 6. Division has a higher priority than subtraction.~~

	~~2) In terms of the MSB & LSB of the actual midi messages, pitchBend runs from 0 to 16383. Many DAWs display that range as -8192 to +8191, just as midi channel 0 is displayed as channel 1.~~

	~~3) (pitchBend / 8192 - 1) / 6 ranges from -1/6 to nearly +1/6 of an octave, or from -200¢ to +199.83¢.~~

	~~4) if you complain about not being able to bend that last 0.17¢ up to the major 2nd, I will scream!~~

	~~- '''TallKite''' October 09, 2013, 10:02:43 AM UTC-0700~~
	~~----~~

Wikispaces>FREEZE at 00:00, 17 July 2018

2018-07-17T00:00:00Z

New page

= ARCHIVED WIKISPACES DISCUSSION BELOW =
'''All discussion below is archived from the Wikispaces export in its original unaltered form.'''
----

== 8192 - 1 ==

I have a question about,

frequency = 440 * 2 ^ [ (outputNote - 69) / 12 + (pitchBend / 8192 - 1) / 6 ].

Why the (8192 – 1) and not (8192)? The rang of pitch bend is –8192 to +8191 with 0 being no bend the total range is 16383. Using (8192 – 1) would give you true +200 ¢ but would give you more than 200 ¢ negative. There for the ranges of pitch bend would over lap when changing notes by a tone. Using 8192 there would be on over lap. Are there any synthesizers that use (8192 – 1)? That seems like a more complicated math for the synthesizers.

Using + or – 50 ¢ I would think you would not want the over lap either,

requency = 440 * 2 ^ [ (ON - 69) / 12 + (PB / 8192) / 24 ].

So to get a +50 ¢ PB you would go to,

requency = 440 * 2 ^ [ ((ON + 1) - 69) / 12 + (-8192 / 8192) / 24 ].

And to get a –50 ¢ PB you would go to,

requency = 440 * 2 ^ [ ((ON) - 69) / 12 + (-8192 / 8192) / 24 ].

Thank you,

ƒg

- '''gillmre''' September 27, 2013, 08:56:51 PM UTC-0700
----
You misunderstand, my friend.

1) (pitchBend / 8192 - 1) / 6 is really ((pitchBend / 8192) - 1) / 6. Division has a higher priority than subtraction.

2) In terms of the MSB & LSB of the actual midi messages, pitchBend runs from 0 to 16383. Many DAWs display that range as -8192 to +8191, just as midi channel 0 is displayed as channel 1.

3) (pitchBend / 8192 - 1) / 6 ranges from -1/6 to nearly +1/6 of an octave, or from -200¢ to +199.83¢.

4) if you complain about not being able to bend that last 0.17¢ up to the major 2nd, I will scream!

- '''TallKite''' October 09, 2013, 10:02:43 AM UTC-0700
----