Dear Simon
Thank you very much for your suggestion. I was trying to prepare a midi
for a hymn with acompaniment, 4 channels for SATB and two for the
accompaniment.In the accompaniment there are four voices ( but only two
staves ). I used the << {}{} >> construct to accommodate the extra voices
but since I was getting the warning about the channels being remapped, I
removed this consruct and replaced the consruct by 4 channels instead of
two; I associated each voice with a channel not the staffThus there will
be a maximum of 8 channels. Now I don't get
a warning. But when I put the SATB on two staves instead of four the
warning reappears. I find this behavior difficult to undererstand since *I *am
not increasing the channels: as far as I can see the maximum no of
channels is 8 . I will do some more work on my example to see what is
happening, assuming that this is not a bug in lilypond. I will let you know
if I solve it.
Sebastian
.l
On Sun, May 18, 2014 at 6:54 AM, Simon Albrecht <[email protected]>wrote:
> Hello Sebastian,
>
> it seems to me like you would require more than 16 midi channels (which
> normally correspond to the staves in your score) and midi doesn’t support
> more than 16. So the output which would have gone to channel #17 is
> actually put into channel #1 (and inherits its instrument, dynamics etc.
> properties), #18 is redirected to #2 etc. (that’s the modulo 16 part). So
> either, if this isn’t a problem for you (because all staves use the same
> midi instrument for example), just ignore the warning [1] or try using an
> extra score for midi, which combines some of the staves into voices of one
> staff, so you don’t have more than 16 staves in total.
>
> HTH, Simon
>
> [1] or use the scheme function ly:expect-warning:
>
>
> #(ly:expect-warning "MIDI channel wrapped around")
>
> #(ly:expect-warning "remapping modulo 16")
>
>
> (somehow this doesn’t suppress all the warnings, but only the first one of
> a kind; I’ll ask about that in a separate mail)
>
> Am 17.05.2014 21:45, schrieb Sebastian Canagaratna:
>
> Hi:
> I'm using Lilypond 2.16.2 I get the above warning sometimes.
> Is this a bug? Or am I doing something wrong? I can't detect the error,
> and the midi seems OK.
>
> Sebastisn
>
>
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