Re: [Rosegarden-user] Midi Mixer problem

2016-01-19 Thread Home Stephens
Thanks Guys,
I had assumed a clearer separation between volume and expression.  I guess
I expected to see expression events throughout the file, but assumed that I
should not see volume events apart from in the header.
Interestingly, I found yesterday that both of my sample files work
perfectly on an old version of Cakewalk.
This would suggest that Cakewalk is handling things differently.
I had always thought that a midi file was being read in near real time, so
intro at beginning of file and end at end of file.
>From what I think I'm seeing now, it appears that the whole file is read in
and parsed before start of play,
and the file structure is per instrument rather than in time order.
Once I know for certain what is happening, I could probably write a script
in Perl or C to re-parse the midi file.

Thanks again for all your inputs.
Regards,
Paul.


On Mon, Jan 18, 2016 at 2:56 PM, Abrolag 
wrote:

> On Mon, 18 Jan 2016 15:46:35 -0500
> Ted Felix  wrote:
>
> > On 01/18/2016 02:43 PM, Home Stephens wrote:
> > > Interestingly, both of my example files have a number of volume events
> > > (type 7 I believe) throughout.  I would have thought that these should
> have
> > > been type 11 expression events which is a percentage of volume.
> >
> >Expression is used for performance things like string-swells, not for
> > mixing.
> >
> >When going from one synth to another, it's not unusual to go through
> > and redo all three of the dynamics-related MIDI events:
> >
> > 1. Velocity (in the note-on/note-off's)
> > 2. Volume (CC)
> > 3. Expression (CC)
> >
> >It's just the nature of MIDI.  And it can be quite a mess.
> >
> >I believe rg offers rulers to ease volume and expression tweaking.
> > Not sure about velocity.
> >
> > Ted.
>
>
> Just poking my nose in here :)
>
> Velocity can really catch you out. A good synth will change the timbre as
> well as the volume depending on key velocity.
>
> --
> W J G
>
>
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Re: [Rosegarden-user] Midi Mixer problem

2016-01-18 Thread Home Stephens
Thanks Ted,
Interestingly, both of my example files have a number of volume events
(type 7 I believe) throughout.  I would have thought that these should have
been type 11 expression events which is a percentage of volume.  However,
the file with more volume events works perfectly.
The effect is as though the mixer were being completely bypassed when
playing the other file.
Its not like the UI faders move or moving a fader briefly changes the
volume.
Thanks,
Paul.

On Sat, Jan 16, 2016 at 6:22 PM, Ted Felix  wrote:

> On 01/16/2016 04:57 PM, Home wrote:
> > When I import midi files, I find that for most files the Midi Mixer has
> > no affect.
>
>I suspect that the files have volume control change messages
> sprinkled throughout.  MIDI tracks with dynamics (loud/soft transitions)
> will have this problem.
>
> Ted.
>
>
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