Search found 36 matches

by dewdrop_world
Tue Jun 19, 2012 3:35 am
Forum: System Tuning and Configuration
Topic: Really confused about merging devices by .asoundrc
Replies: 1
Views: 2294

Re: Really confused about merging devices by .asoundrc

For other people's future reference: This could be either a kernel bug in 10.04 that's fixed in 12.04, or a firmware bug in the Intel USB controller.
by dewdrop_world
Tue Jun 12, 2012 8:42 am
Forum: System Tuning and Configuration
Topic: Really confused about merging devices by .asoundrc
Replies: 1
Views: 2294

Really confused about merging devices by .asoundrc

Trying to figure out how to use asoundrc to merge two "virtual" USB audio devices that live in the same card (M-Audio fast track pro). It has four output channels, but exposes them to alsa is a pair of stereo devices hw:1,0 and hw:1,1. As of now .asoundrc reads like this: pcm.!default { ty...
by dewdrop_world
Tue Jun 12, 2012 8:03 am
Forum: System Tuning and Configuration
Topic: M-Audio multichannel patch?
Replies: 9
Views: 3758

Re: M-Audio multichannel patch?

Sorry to revive this thread, but I finally had a chance to test this yesterday and the output through alsa_out was really terrible, like it was clipping by a large factor (even though I was feeding it a sinewave at only -26 dBFS). Following up, in the absence of a response. The information from the...
by dewdrop_world
Fri Jun 01, 2012 2:52 am
Forum: System Tuning and Configuration
Topic: M-Audio multichannel patch?
Replies: 9
Views: 3758

Re: M-Audio multichannel patch?

Sorry to revive this thread, but I finally had a chance to test this yesterday and the output through alsa_out was really terrible, like it was clipping by a large factor (even though I was feeding it a sinewave at only -26 dBFS). I suspect the resampling -- strange, though, because both logical dev...
by dewdrop_world
Sat Apr 28, 2012 5:56 am
Forum: System Tuning and Configuration
Topic: M-Audio multichannel patch?
Replies: 9
Views: 3758

Re: M-Audio multichannel patch?

Indeed it does! I see "outputs34" in the connection window. From there, it should be a simple matter to connect SuperCollider's hardware output busses 2 and 3 (starting from 0) to outputs34. (SC uses environment variables to configure the audio server's default Jack connections, piece of c...
by dewdrop_world
Thu Apr 26, 2012 4:00 pm
Forum: System Tuning and Configuration
Topic: M-Audio multichannel patch?
Replies: 9
Views: 3758

Re: M-Audio multichannel patch?

Neither for me in Europe. It is definitely offline. It's a shame as there are very good docs. IIRC, "the reduced functionality" refers to the fact that the standard driver supports/supported a bit depth of "only" 16 bit. With that patch, the card works at 24 bit. If you are OK w...
by dewdrop_world
Wed Apr 25, 2012 1:44 pm
Forum: System Tuning and Configuration
Topic: M-Audio multichannel patch?
Replies: 9
Views: 3758

M-Audio multichannel patch?

Hi, haven't been around in a while (quite busy). Ubuntu 10.04, real-time kernel I've been using an M-Audio fast track pro using the generic USB audio driver quite well, but getting only two of the available four outputs. Eventually, I will need to try to get all four. http://www.alsa-project.org/mai...
by dewdrop_world
Wed Aug 31, 2011 2:28 am
Forum: System Tuning and Configuration
Topic: das_watchdog ineffective
Replies: 0
Views: 1608

das_watchdog ineffective

I installed das-watchdog from the ubuntu repos, then tried test_rt. One cpu on my dual core (Core i3) pegged at 100% but das_watchdog never killed the test process. I had to do "sudo kill -9 pid " instead. Just wondering what I'm missing... what condition is das_watchdog looking for that d...
by dewdrop_world
Sat Aug 27, 2011 7:58 am
Forum: System Tuning and Configuration
Topic: usb audio device --> frequent lockups
Replies: 1
Views: 1755

Re: usb audio device --> frequent lockups

Actually, hold that thought... I took a deep breath and read over [1] again, then found that the irq handler for usb2 (where lsusb shows the fast track) was actually lower than Jack's priority. Installing the Ubuntu rtirq package seems to have taken care of that -- the USB interrupts now have priori...
by dewdrop_world
Sat Aug 27, 2011 7:34 am
Forum: System Tuning and Configuration
Topic: usb audio device --> frequent lockups
Replies: 1
Views: 1755

usb audio device --> frequent lockups

Okay... here's the story... my rt-kernel system has been running beautifully for the better part of a year. Then I decided to add an m-audio fast track pro (running currently in class compliant mode), which generally works okay EXCEPT when there is a little glitch in the power line. Then jack (1.9.6...
by dewdrop_world
Sat Apr 02, 2011 8:19 am
Forum: Notation Editors
Topic: Anything like Finale's speedy note entry?
Replies: 6
Views: 10885

Anything like Finale's speedy note entry?

Back when I was still using Finale, I got really used to speedy note entry -- MIDI keyboard for pitch and numeric keypad for note values. Now that I'm looking at Linux notation editors, it looks like you can enter notes using mouse/computer keyboard entirely, or transcribe a MIDI performance (assumi...
by dewdrop_world
Fri Jan 21, 2011 6:33 am
Forum: Original Scores & Recordings
Topic: Try it !
Replies: 2
Views: 2940

Re: Try it !

I wanted to have a listen, but I don't see a proper download link. I only see buttons to load the tracks in some kind of web player. That player displays very badly in Firefox (Ubuntu 10.04). The volume control goes above the page's top margin, but underneath the toolbar. So there is no way to chang...
by dewdrop_world
Thu Jan 20, 2011 2:27 am
Forum: Linux Distributions & Other Software
Topic: Monitor Management Software
Replies: 5
Views: 2575

Re: Monitor Management Software

The good thing about something like SC is it frees you up from the really boring (and bug-prone) details of getting individual sample values and doing things to them directly. But it does take some time to learn, so give yourself time and be patient. If I were writing this, I would use a simple Synt...
by dewdrop_world
Wed Jan 19, 2011 12:45 pm
Forum: Linux Distributions & Other Software
Topic: Monitor Management Software
Replies: 5
Views: 2575

Re: Monitor Management Software

Write a custom solution in SuperCollider? It's basically In.ar() and Out.ar() ugens, plus a few filters. All of those are cpu-cheap. SC synth is a jack client; pipe your other stuff into SC and SC --> hardware outs. Number of Jack ins and outs are configurable. Cost, $0 (plus time to get it working)...
by dewdrop_world
Mon Jan 03, 2011 6:34 am
Forum: Developer's Section
Topic: What language would you recommend me to start diving into?
Replies: 6
Views: 4209

Re: What language would you recommend me to start diving into?

Another way to get your feet wet is SuperCollider . In SC, you can learn about programming methodologies without simultaneously having to learn how to calculate sample-by-sample DSP. Neither is especially easy, and if you try to do both at the same time, it may be a lot to expect. Say, if you want t...

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