ChipMusic.org - Phase (PocketChip)

Re: Phase (PocketChip)

2016-12-09T09:18:05Z

@yoyz2k Cheers, phase is using alsa. It doesn't have a hard coded sample rate but if you want to change it, it will require a reboot. It shouldn't take more than a few seconds though to do (esc, ok, arrow down, enter). On the Pi it seems like you can pick pretty much any sample rate you want, on the chip however my experience was that the one you want need to match the .asoundrc. I haven't found a method either for reading the current hardware sample rate, which would be the nicest solution. Now I have to ask for a sample rate and I might get it or I might not.

My recommendation is still using 22050 Hz though for the best experience. It is has enough bandwidth to produce good notes and it is fast enough for the chip to process.

Also on the chip you need to modify the .asoundrc to add a phase plugin because the os has a hold on the default sound hw:0,0 all the time.

Cheers

ERik

Re: Phase (PocketChip)

2016-12-09T07:12:08Z

@humbletune, I don't inow if it is possible with the sound backend you are using, but with alsa, sdl and RTAudio you can choose the frequency of the app when you initialize it. It may be easier for people to have a binary which switch to the right backend at start.
In my code picoloop i do it here : https://github.com/yoyz/audio/blob/mast … TAudio.cpp openAudio method.
But the chip audio driver is maybe unable to provide different frequency, I don't own one.

Re: Phase (PocketChip)

2016-12-09T01:36:09Z

Thanks Ill keep an eye out!

Re: Phase (PocketChip)

2016-12-08T21:51:06Z

@herr_prof The solution I provide at the website is global and require a reboot unfortunately, at least of the synth. I am really no expert at configuring the .asoundrc but yeah @breakphase method might work, it might also need some kind of converter node in there, not sure.

Sorry I am not much more help here.. I will let you guys know if I figure out a better method.

Cheers

ERik

Re: Phase (PocketChip)

2016-12-08T21:07:59Z

Ok, I might be trippin, but try putting this in the .asoundrc file.

pcm.phase {
type plug
slave.pcm "dmixer"
rate 22050
}

I may be totally off base but the rate property may work there. Worth a shot...

Edit: oh, I think his website may address this. try downloading this file to the directory you put Phase: http://humbletune.com/phase/chip/settings.json

It appears you can also make the buffer larger in that file. you could try setting it to 1024, and leave sample rate at 44100.

Re: Phase (PocketChip)

2016-12-08T20:54:04Z

Mmm now there's a thought. Make a bash script, and launch from that.

Re: Phase (PocketChip)

2016-12-08T15:47:36Z

Is there a possibility to not make it a global change? Some sorta of script to set the sample rate at run versus at boot?

Re: Phase (PocketChip)

2016-12-08T00:05:52Z

@rumpelfilter It's definitely a interesting idea. Will try to have a look at that soon. Cheers

@herr_prof It's my recommendation to run it at 22050Hz but you could always try it I guess. There is a bigger risk of underruns at 44100 Hz, and with polyphony. Mono and arpeggio should be pretty safe I think without getting clicks.

Cheers

ERik

Re: Phase (PocketChip)

2016-12-07T22:10:55Z

Do you need to change the global configs to that lower sample rate to enjoy it? Id rather not mess with a working piggy install.

Re: Phase (PocketChip)

2016-12-07T09:54:06Z

@humbletune: it works a bit like the Mac App store. It's the good ol' Linux repository with a more modern look and UI and with the possibility of selling apps. No idea how much people use it though.

Re: Phase (PocketChip)

2016-12-07T09:00:20Z

@PULSELOOPER Yeah it's anoying sometimes with international shippings.

@Domu I've not tested it but I am pretty sure it will run on the normal chip. The pocket chips is basically the chip but with the screen and keyboard. As I understand it is running the same os under the hood, only the pocket version has a slightly different interface. But worst case you can always flash your chip to run the pocket chip os. Cheers for the encouragment. I am not stopping yet, still have stuff to do.

@rumpelfilter I have not had a look at the Noobs / PI app store, didn't really know it existed. Have to do some investigation on that. Cheers for sharing that thought,.

@yoyz2k Thanks.

Re: Phase (PocketChip)

2016-12-06T18:16:25Z

Sound great on this video

Re: Phase (PocketChip)

2016-12-06T17:26:47Z

btw. any plans to add this to the official Noobs / PI app store?

Re: Phase (PocketChip)

2016-12-06T17:16:15Z

humbletune my man, will this run on a regular chip? not a pocketchip? I think i may buy a chip if so as rpi is causing me troubles outputting to composite, running LGPT and a few others! Im based not very far at all from you, please continue with the awesome softwares!

Re: Phase (PocketChip)

2016-12-06T12:53:57Z

humbleTUNE wrote:

They are based in america but sent it from Hong Kong. Don't think I had to pay any extra tax on it if I remember correct.

Sadly, they do charge taxes on the checkout. USD 55 for shipping to Brazil. Which is idiot, once I've never bought something from China that got taxed.