Re: [Lmuse-user] Midi's great, but no wav audio

[Robert J. <rj...@sp...>]

Hi James,

On Friday 23 July 2004 11.06, James Nickerson wrote:
> Muse is looking to be exactly the tool I want, and it's working well as far
> as midi's concerned (though a metronome precount would be nice), but
> non-midi audio tracks just don't make any sound. The mixer bar reacts
> appropriately, but there's no sound accompanying it. 

The fact that the meters are moving is proof that it's working, you are just 
not hearing it ;)

The most common mistake here is that MusE does not add a default routing (we 
might need to change that in a coming release, I get a feeling many stumble 
on this).

First, unless you already have, you need to push up all the faders so you can 
see the meters moving on the output track. Then click on the [oR] button for 
the output track and select the jack outputs that go to your soundcard, 
remember to set both channels. 

If you don't have sound all the way to the output meter, check the [oR] 
setting for the other tracks also.

> With just the midi, 
> it's not much better than Rosegarden or Brahms or all kinds of other ones,
> since the real attraction is having a multritrack sequencer that can record
> audio and midi and synchronize them.
>
> I'm running Mandrake 10 on an Athlon xp machine, muse 7.0 that I compiled
> from source (though I tried Thac's rpm version and had exactly the same
> issue), jackit-0.98.5-040719.1. I can record and play audio fine in other
> applications. I've tried a variety of parameters for jackd. Mostly I've
> been using
> jackd -v -d alsa -d pcm.emu10k1 -p 512 -D -P
> as root. Muse finds jackd without any problems that it reports.
>
> I get these messages sometimes. especially the first time I try to play a
> file with an audio track:
>
> FIFO 0x851c89c underrun...
> AudioTrack::record(): empty fifo
> FIFO 0x8505e88 underrun...
> WaveTrack::getData(wav test) fifo underrun
>
> And it seems like when they're displayed that the mixer bars don't respond.
> Then usually if I try to play it again they respond normally and show the
> audio levels, and the error messages are not output again. 

Aha, that's an interesting observation. 
I've seen this error many times but have not made this connection. Usually it 
works anyway...

> But still no sound.

This should work with the above I hope.

> Also, just as a test I tried outputting a project to a wave file, and I got
> squeaky garbage. I'm using a SBlive with the Unison soundfont loaded into
> it for midi rendering -- 

You have the horsepower so you might wish to consider using the internal 
fluidsynth for the soundfont. For me that is a more intuitive approach 
atleast.

> The midi sounds are going through jack, through 
> the soundcard, so it seems like it can't be a very big stretch for
> wav-style sounds to use the same interface.

No, not a big stretch, my guess is that it's the same problem. Though, garbage 
is ofcourse always wrong...

>
> Any help would be great. I am very interested in this software. Thanks for
> reading.

Hopefully that'll get you a bit further, don't hesitate to ask here if there 
are other concerns.

The documentation is coming along but there are still a lot of things that are 
hard to find out without asking.

/Robert


-- 
http://spamatica.se/music/