Re: Quantisation?

 From having spent a lot of time in the Rosegarden source code, it 
always struck me that the intent was to optionally have two separate but 
simultaneous versions of each note:

1. A quantized version that fell exactly on a beat or sub-beat ("1", 
"2-and", "3-and-uh", "4-eee-and-uh", etc) and lasted a standard amount 
of time (quarter, eighth, sixteenth, thirty-second, sixty-fourth note, 
etc), and ...

2. A real "performance" version that that had "feel", "swing", rushing 
or dragging the beat, etc.

This would allow playback of the composition with the desired 
performance without having the notation cluttered with 
excessive/confusing 128th-note rests, dotted sixty-fourth notes, etc, or 
notes in the Matrix Editor that don't start and end exactly on grid lines.

It can be seen in the code in places like Event::setNotationDuration() 
and setNotationAbsoluteTime(), and when running official Rosegarden 
(it's a little easier in rosegarden-fork) in the Matrix Editor by 
double-clicking a note while in "Select and Edit(F2)" mode. The dialog 
that pops up has both "Event Properties: Absolute Time" and "Duration" 
and also "Notation Properties: Notation Time", and "Notation Duration".

But this feature doesn't seem to have ever been fully implemented.

I see no reason why quantization during recording vs doing it later in 
the Notation or Matrix Editors would be any different (and if it used 
the same quantization algorithms it wouldn't be) but, yes, when I 
started with Rosegarden I spent a lot of time trying to find a "quantize 
while recording" button before realizing that the intended workflow is 
to do it afterwards while editing the composition.

Unless the button *is* there somewhere and I just never found it. ;)


On 5/18/23 9:42 PM, Ted Felix wrote:
>    Quantizing can be used for two main purposes:
> 
> 1. To make sheet music that looks good.
> 2. To make your performance sound more "perfect".
> 
>    Rosegarden is supposed to be able to do either, but I've had trouble 
> getting it to do #1 without also doing #2.
> 
>  > One comment the person did say was that it was better to use it as you
>  > were playing, vs on recorded items, because the results were better for
>  > some reason.
> 
>    That might be related to getting sheet music that looks good without 
> touching the performance.
> 
> Ted.
> 
> On 5/18/23 11:11 PM, Joe Hogan wrote:
>> Thanks Ted,
>>
>>
>> I will try it next time I am in front of my piano and computer.
>>
>> I will better understand your comments then.
>>
>>
>> One comment the person did say was that it was better to use it as you
>> were playing, vs on recorded items, because the results were better for
>> some reason.
>>
>> When reading over what you wrote, it seems as though you quantisize the
>> recorded notes.
>>
>> I'll try this and see how things work for me.
>>
>> I'll bring my comments back and see what you and others say.
>>
>> Thanks again for holding a beginners hand.  I will get better:)
>>
>> Joseph
>>
>>
>> On 2023-05-18 22:52, Ted Felix wrote:
>>> Rosegarden does have quantization.  In my experience it works best
>>> from the Matrix (piano roll) editor where you can clearly see the
>>> results.
>>>
>>>   Select a segment in the main window and press M to launch the matrix
>>> editor.  Select some notes (or press Ctrl+A to select all).  Now
>>> either press = or click on the "Q" toolbar button. This will launch
>>> the quantize dialog.  From here, I would start with the "Grid
>>> quantizer" as that's the only one I've been able to get to work.
>>>
>>>   Experiment in here and don't be surprised if some of the fields seem
>>> to do nothing.  The quantizers are a bit buggy.
>>>
>>> Ted.
>>>
>>> On 5/18/23 10:38 PM, Jozseph Hogan wrote:
>>>> Hello
>>>>
>>>> I am trying to learn how to use a track system for making music. 
>>>> This is
>>>> a new experience for me.
>>>>
>>>> In addition to this, I am tryign to write dow my music so that the 
>>>> music
>>>> is not lost from my brain:)
>>>>
>>>> I was in a forum and some one mentioned about using a feature called
>>>> quantisation in order to clean up th enotes a bit.
>>>>
>>>> Is this a feature in Rosegarden?
>>>>
>>>> Thanks
>>>>
>>>> Joseph
>>>>
>>>>
>>>>
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