14 Sep
2015
14 Sep
'15
11:56 p.m.
No, this isn't a cabling problem - I haven't even got as far as
connecting the piano to the computer.
Simply I cannot get any sound when playing a midi file in Qtractor or
Muse even though the editor and QjackCtl show that the file is being
processed (time counters advancing etc.)
Yet I can play a midi file using tiMidity (either in GUI or from command
line), and the sound on both my computers is generally OK in any other
situation too.
There's no point connecting the piano to the computer until I know I can
hear stuff from the editor.
David
On Mon, 2015-09-14 at 14:28 -0700, Bob van der Poel wrote:
Before you get all involved with jackd, etc. make sure
you have
cabling, etc. hooked properly. I'd start with something very simple
like aplaymidi and arecordmidi. If they don't work, then you have a
cabling (or dead piano) problem.
Next, you can figure out jack (and give me a tutorial!).
On Mon, Sep 14, 2015 at 12:42 PM, David Sumbler <david(a)aeolia.co.uk>
wrote:
I have hesitated for weeks to post here with such a basic and
possibly
stupid problem, but I am at my wits end with this.
I run Ubuntu 12.04 on a desktop computer and also on a small
notebook.
Sound is fine on both of them, and I can play midi files
through
tiMidity with no problem.
I want to use a midi-capable electric piano as an input
device, and I
reckoned the first thing to do was to get some suitable
software and
make sure I could play a midi file from a midi editor.
I have QjackCtl, Qtractor (I also have Muse) and Qsynth
installed. I
have spent weeks, on and off, trying to solve the basic
problem of
getting some sound from Qtractor (or Muse), but although both
the editor
and QjackCtl show that an imported midi file is actually being
played, I
get no sound whatsoever. This is true for both computers,
even though
their hardware is pretty different. As I said earlier, the
sound on
both computers is fine in other contexts, so it is almost
certainly some
fundamental error on my part, but I have no idea what is
wrong. I have
tried all sorts of different sets of connections in QjackCtl,
but never
heard a note yet!
Having read various posts in the forum archive, I tried
running
jack-metro. QjackCtl shows that the metronome is running, but
connecting the metronome to the system outputs produces no
sound, so the
problem seems to be at this level.
If anyone feels they have the patience to try to point me in
the right
direction, I shall be very grateful indeed.
David
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Bob van der Poel ** Wynndel, British Columbia, CANADA **
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