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Posts Tagged ‘timidity’

Timidity problems solved

I figured out what’s wrong with my timidity patches. That shrill noise in some of my midis came from a whistle in the drum patches that has been looped in the eawpats config files. Removing the loop setting solved the problem. I think I’ll stick with eawpats since freepats is missing quite a number of instruments.

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Now that I’ve figured out how to play midi using pygame on my Nokia 770, I’ve been tearing my hair out the last couple of days trying to make pygame midi work on my Ubuntu box, so that I can do some development with it. I just couldn’t get any sound out my pygame script.

Actually timidity and pygame WILL co-exist happily out of the box, but with a caveat – you will have to use the lowest common denominator, which is SDL_mixer’s timidity implementation. That means none of those fancy options like reverb or soundfonts, and using GUS patches only. Both timidity and Ubuntu’s build of libSDL_mixer will look in /etc/timidity/timidity.cfg, so there is a conflict there. However, I need my soundfont, as neither freepats nor eawpats will all play my midi files properly.

Here’s how I make them co-exist. First edit /etc/timidity/timidity.cfg to work with pygame (I just source /etc/timidity/freepats.cfg). Then configure timidity to start as an ALSA server (which I’m already doing). Set TIM_ALSASEQ=true and add “-c [location of bigger and better timidity.cfg]” to the TIM_ALSASEQPARAMS settings. Restart the timidity server using “sudo /etc/init.d/timidity force-reload” (restart doesn’t work for me).

This will cause pygame to use the settings in /etc/timidity/timidity.cfg, and timidity and other programs such as KMid and Audacious (with the AMidi plugin) to use both config files. I’m not sure how the GUS patches will interact with the soundfont, but so far it seems to work well.

I’m still less than satisfied with freepats or eawpats though. Missing instruments, weird chirping sounds, etc. Anyone knows of a more complete set? Or perhaps it’s an SDL problem?

Or perhaps the SDL folks should consider updating to the current timidity instead.

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Midi on my Nokia 770

When I got my Nokia 770, I’ve always wanted to have midi playback. It’s funny that something that came out of Nokia couldn’t play midi files when all their phones could.

It has been reported that timidity compiles for the Nokia 770, but the binary that’s floating around on the Web doesn’t work for me, and funny no one else ever bothered to build and distribute a port. well, I’m too lazy to download and set up the Maemo development environment and mess about with cross-compilation. So what am I to do?

There is another way. I already have Python 2.5 installed, which comes with PyGame and which is supposed to support midi. I’m not sure if libSDL_mixer came on board or with Python or with something else I installed, but it’s there on my device and I read that PyGame actually uses it for midi playback. It contains some really ancient version of timidity (read: no SoundFont support for you!). So I got some GUS instrument patches instead, set up timidity.cfg (it must be in /usr/local/lib/timidity/timidity.cfg), wrote a little Python script and yay it works! ^_^

It’s not that perfect though. I threw a few midis at it. It can’t read some of them, not sure why. For some others, at some point there would be a shrill noise in the background (is that a particular instrument or just the player being overloaded/screwing up?) It does seem to work the CPU quite a bit though. But I could play some files all the way through, not bad.

Need some more testing, perhaps other instrument patches might work better, but I’m quite happy to have found a solution without doing all that cross-compilation stuff. I may post more details and instructions if it turns out well. ^_^

Update: I think it’s instrument patches that are causing those funny sounds, perhaps something in the drumset. I switched to the standard freepats instruments and it works much better now – I still get funny noises with some midi files but they are not that long shrill I get earlier. And it plays everything I threw at it. Earlier on I used the instrument set from the libsdl website. I’m sticking to the larger freepats instruments now – you can put them on the media card so don’t have to worry so much about storage. Perhaps someone who knows what’s happening can advise me how to improve the playback quality.

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