9 Jul
2010
9 Jul
'10
10:22 a.m.
Hi,
Is there any software which will tell me of 'errors' in the midi stream?
I'm having trouble with notes which hold for too long and want an easy
way of eliminating (or not) missing note-off events.
Cheers,
James.
9 Jul
9 Jul
12:04 p.m.
On Friday, July 9, 2010, James Morris wrote:
Hi,
Is there any software which will tell me of 'errors' in the midi stream?
kmidimon
I'm having trouble with notes which hold for too
long and want an easy
way of eliminating (or not) missing note-off events.
Cheers,
James.
Regards,
Pedro
1:19 p.m.
On Fri, 2010-07-09 at 14:04 +0200, Pedro Lopez-Cabanillas wrote:
On Friday, July 9, 2010, James Morris wrote:
Yes, it's only possible to monitor the data. Do the notes really hang
(never stop) or are they played with a too long note length?
If the notes never stop and the MIDI monitor confirms that all data is
send correctly, than the level of the MIDI output might be to low, OTOH
this should not only effect note off data. Hardly probable but some
external equipment might have problems with note length, that are
extremely short. Quite possible is, that to much data is send by just
one MIDInterface, hence the software-UART-handshake might miss some
bytes, anyway strange that just note off is effected. I guess note
length issues are usual for some drum pads in combination with some MIDI
instruments.
Is this issue for MIDI inside Linux or when using the hw MIDI?
- Ralf
Hi,
Is there any software which will tell me of 'errors' in the midi stream?
kmidimon
I'm having trouble with notes which hold for
too long and want an easy
way of eliminating (or not) missing note-off events.
Cheers,
James.
Regards,
Pedro
9:35 p.m.
On 9 July 2010 14:18, Ralf Mardorf <ralf.mardorf(a)alice-dsl.net> wrote:
Is this issue for MIDI inside Linux or when using the
hw MIDI?
Software only. I've partially located the problem but am unsure of why
it occurs so frequently, again down to software.
the call to jack_midi_event_reserve returns NULL every few notes being
sequenced (instead of returning a pointer to the data where the MIDI
events should be written to). So some note-on events are missing
note-off events, and some note-off events are divorced from any
preceding note-on. Definitely s/w.
might try adjusting some JACK settings and see what happens.
Cheers,
James.
10 Jul
10 Jul
1:49 a.m.
Am Freitag, den 09.07.2010, 22:35 +0100 schrieb James Morris:
On 9 July 2010 14:18, Ralf Mardorf
<ralf.mardorf(a)alice-dsl.net> wrote:
You can use the jack_ringbuffer to avoid the event_reserve fail.
greats hermann
Is this issue for MIDI inside Linux or when using
the hw MIDI?
Software only. I've partially located the problem but am unsure of why
it occurs so frequently, again down to software.
the call to jack_midi_event_reserve returns NULL every few notes being
sequenced (instead of returning a pointer to the data where the MIDI
events should be written to). So some note-on events are missing
note-off events, and some note-off events are divorced from any
preceding note-on. Definitely s/w.
might try adjusting some JACK settings and see what happens.
Cheers,
James.
5075
days inactive
5076
days old
linux-audio-dev@lists.linuxaudio.org
4 comments
4 participants
participants (4)
-
hermann -
James Morris -
Pedro Lopez-Cabanillas -
Ralf Mardorf