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Pitchbend

 

Hi All -

I wanted to ask a couple of questions about how pitch bend is
implemented in a DX7 (mark 1). I'm controlling it with an external
MIDI signal.

1. I believe the range of potential values is 0 to 16382, or 16384.
I'm a little unclear about which. It would mean that either 8191 or
8192 is the "center point" (no bend added). Is that all correct?

2. I believe that you can program the DX7 so that the pitch wheel
doesn't use the "full excursion", but presumably that doesn't change
the range of 0 to 16384, on a patch-by-patch basis. So, in terms of
pitch, what is the actual range here? Is it something that can be
measured in semitones?

3. It does not seem possible to assign pitchbends to individual notes.
I know that the DX7 II has some kind of a pitch reprogramming
feature.. but is there any way to do something similar with a DX7 I?

Thanks all,
Geoff
 

2000H is the center - that's 8192 decimal.

MT

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-------- Oorspronkelijk bericht --------
Onderwerp: [YamahaDX] Pitchbend
Van: "geoff baltan geoffbaltan@... [YamahaDX]"
Aan: yamahadx@...
Cc:


?

Hi All -

I wanted to ask a couple of questions about how pitch bend is
implemented in a DX7 (mark 1). I'm controlling it with an external
MIDI signal.

1. I believe the range of potential values is 0 to 16382, or 16384.
I'm a little unclear about which. It would mean that either 8191 or
8192 is the "center point" (no bend added). Is that all correct?

2. I believe that you can program the DX7 so that the pitch wheel
doesn't use the "full excursion", but presumably that doesn't change
the range of 0 to 16384, on a patch-by-patch basis. So, in terms of
pitch, what is the actual range here? Is it something that can be
measured in semitones?

3. It does not seem possible to assign pitchbends to individual notes.
I know that the DX7 II has some kind of a pitch reprogramming
feature.. but is there any way to do something similar with a DX7 I?

Thanks all,
Geoff
Bruce Wahler
 

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  1. I don't believe that individual pitch bend is available on the DX7, any version.? And polyphonic aftertouch isn't available.? The only thing that one can do on DX7II, TX802, etc. is program layers where each layer responds to pitch differently.? To use this to bend individual notes of a chord, for example, one must use multiple MIDI channels.? The original DX7 only supports one MIDI channel.


Regards,

-BW

Bruce Wahler
Ashby Solutions.com?
bw@...



978.597.7008
On 11/27/2018 6:52 AM, geoff baltan geoffbaltan@... [YamahaDX] wrote:

?

Hi All -

I wanted to ask a couple of questions about how pitch bend is
implemented in a DX7 (mark 1). I'm controlling it with an external
MIDI signal.

1. I believe the range of potential values is 0 to 16382, or 16384.
I'm a little unclear about which. It would mean that either 8191 or
8192 is the "center point" (no bend added). Is that all correct?

2. I believe that you can program the DX7 so that the pitch wheel
doesn't use the "full excursion", but presumably that doesn't change
the range of 0 to 16384, on a patch-by-patch basis. So, in terms of
pitch, what is the actual range here? Is it something that can be
measured in semitones?

3. It does not seem possible to assign pitchbends to individual notes.
I know that the DX7 II has some kind of a pitch reprogramming
feature.. but is there any way to do something similar with a DX7 I?

Thanks all,
Geoff
 

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On Nov 27, 2018, at 20:52, geoff baltan geoffbaltan@... [YamahaDX] <YamahaDX@...> wrote:

1. I believe the range of potential values is 0 to 16382, or 16384.
I'm a little unclear about which. It would mean that either 8191 or
8192 is the "center point" (no bend added). Is that all correct?

Some documents say the range is 14 bits, MIDI implementation for OS version 1.6 shows 7 bit resolution. So it’s not quite clear what is sent to the internal tone generator and what is sent to MIDI output.


2. I believe that you can program the DX7 so that the pitch wheel
doesn't use the "full excursion", but presumably that doesn't change
the range of 0 to 16384, on a patch-by-patch basis. So, in terms of
pitch, what is the actual range here? Is it something that can be
measured in semitones?

It is possible to set the range of bending to 1-12 semitones.


3. It does not seem possible to assign pitchbends to individual notes.
I know that the DX7 II has some kind of a pitch reprogramming
feature.. but is there any way to do something similar with a DX7 I?

No.

Daniel Forro
Garry Someone
 

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i would love to answer your questions but to be honest they are way over my head. i would highly suggest to join the yamaha Dx 7 group at yahoo groups. Those guys really know there stuff.
garry

On Nov 27, 2018 6:52 AM, "geoff baltan geoffbaltan@... [YamahaDX]" <YamahaDX@...> wrote:

?

Hi All -

I wanted to ask a couple of questions about how pitch bend is
implemented in a DX7 (mark 1). I'm controlling it with an external
MIDI signal.

1. I believe the range of potential values is 0 to 16382, or 16384.
I'm a little unclear about which. It would mean that either 8191 or
8192 is the "center point" (no bend added). Is that all correct?

2. I believe that you can program the DX7 so that the pitch wheel
doesn't use the "full excursion", but presumably that doesn't change
the range of 0 to 16384, on a patch-by-patch basis. So, in terms of
pitch, what is the actual range here? Is it something that can be
measured in semitones?

3. It does not seem possible to assign pitchbends to individual notes.
I know that the DX7 II has some kind of a pitch reprogramming
feature.. but is there any way to do something similar with a DX7 I?

Thanks all,
Geoff
 

There's another DX7 group on Yahoo? This is the only one I know of unless you speak French.
Can you specify ?
Garry Someone
 

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=====================================================

On 2018-11-27 6:47 PM, hsotnicam@... [YamahaDX] wrote:

?
There's another DX7 group on Yahoo? This is the only one I know of unless you speak French.
Can you specify ?
 

I believe Daniel is correct. The A/D is only 8-bit if memory serves and looking at what I can decipher from the BIN file it looks like the pitchbend value is /2 before being offset for up/down. That would make it 7-bit plus sign.? Should be easy enough to view the MIDI while playing to verify.
 

Hmm - I thought I was posting to that Yahoo Group. I'm a little confused, but thanks for the general responses..
Could anyone clue me in a bit on how the DX7 II works, for special tunings? Each key is on a separate channel?


On Tue, Nov 27, 2018 at 11:47 PM grantbt@... [YamahaDX] <YamahaDX@...> wrote:
?

I believe Daniel is correct. The A/D is only 8-bit if memory serves and looking at what I can decipher from the BIN file it looks like the pitchbend value is /2 before being offset for up/down. That would make it 7-bit plus sign.? Should be easy enough to view the MIDI while playing to verify.
 

I think you are referring to the MicroTuneTable. This has nothing to do with Pitchbend. It makes it possible to program and store alternative tunings, other than Equal Temperament. You can not control individual pitches in realtime with a pitchwheel or other controller message if that's what you want to do.

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-------- Oorspronkelijk bericht --------
Onderwerp: Re: [YamahaDX] Pitchbend
Van: "geoff baltan geoffbaltan@... [YamahaDX]"
Aan: YamahaDX@...
Cc:


?

Hmm - I thought I was posting to that Yahoo Group. I'm a little confused, but thanks for the general responses..
Could anyone clue me in a bit on how the DX7 II works, for special tunings? Each key is on a separate channel?

On Tue, Nov 27, 2018 at 11:47 PM grantbt@... [YamahaDX] <YamahaDX@...> wrote:
?

I believe Daniel is correct. The A/D is only 8-bit if memory serves and looking at what I can decipher from the BIN file it looks like the pitchbend value is /2 before being offset for up/down. That would make it 7-bit plus sign.? Should be easy enough to view the MIDI while playing to verify.
 

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Hello Gary


Am 28.11.18 um 02:55 schrieb Garry Someone studiost@... [YamahaDX]:
?


=====================================================

That is where you are writing at the moment? ;-)

Florian

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