Linux-audio-dev September 2005

linux-audio-dev@lists.linuxaudio.org

57 participants
56 discussions

Re: [linux-audio-dev] 3D fft analysis program

by Downer

> I'm hoping that you're thinking of a realtime display, in which the > peaks roll off to create a true waterfall effect. Baudline (http://www.baudline.com) is a fantastic viewer that does fft cascade. I've used it for a couple of years, and it is great for figuring out how different sounds "work", and it has an oscilloscope-type display as well. Cheers, Jason Downer

17 years, 11 months

[linux-audio-dev] Drum synth

by Dmitry Baikov

Hello. I finally started making my pet music project and realized I need a drum synth to make some cool sounds. psindustrializer is good but also need some tr-909-style sounds. I remeber from my old windoze days I used a nice piece of software called Stomper. Does anybody know any software for linux with comparable capabilities? Or we need to write one? Stomper does not work under wine :( Thanks.

17 years, 11 months

[linux-audio-dev] Re: Drum synth

by Juhana Sadeharju

Hello. I had a couple of articles on drum synths. Check ftp://ftp.funet.fi/pub/sci/audio/devel/lad/drumsynth/ I built the circuit in a00*.jpg at the time when this article was fresh. The article b00*jpg mentions an earlier article. I will check that out at library. Hmm.. I coded a drum synth for Commodore VIC-20 at the time. VIC provided an audio chip with three oscillators, noise, and a common volume if I remember correctly. What I did was to modulate osc pitch and volume parameters with a fast and accurate (compared to Basic) assembly code. The drum sounds were assigned to the keys. This was about 1984, inspired by Yamaha's digital RX drum synths, not by analog drums. Juhana -- http://music.columbia.edu/mailman/listinfo/linux-graphics-dev for developers of open source graphics software

17 years, 11 months

[linux-audio-dev] Re: lad design patterns

by Juhana Sadeharju

>From: "Levi D. Burton" <ldb(a)puresimplicity.net> > >does the idea of documenting various lad design patterns make >sense to anyone? Such "LAD Gems" doc would be much needed here too. (For audio dsp gems, take a look at "musicdsp.org".) I would appreciate if somebody would take a look at Ardour and document best gems found there. E.g., the GUI and audio thread separation and start up sequences. Likewise for Linuxsampler and one of its GUI frontends. Juhana -- http://music.columbia.edu/mailman/listinfo/linux-graphics-dev for developers of open source graphics software

18 years, 2 months

[linux-audio-dev] Proffessionals?

by james＠dis-dot-dat.net

Hi everyone, Can anyone give me any examples of Free audio software being used by professionals? Anywhere where it performs better, or simply doesn't cost two or more body parts to use? Quick answers get bonus points. James -- "I'd crawl over an acre of 'Visual This++' and 'Integrated Development That' to get to gcc, Emacs, and gdb. Thank you." (By Vance Petree, Virginia Power)

18 years, 4 months

[linux-audio-dev] hdsploader not doing it

by Janina Sajka

Regret to report I am having problems loading firmware for my multiface again. This time I have the pci card in a 32-bit system running FC4 with a recent 2.6.12 kernel and alsa from 1.0.10rc1, including alsa-tools-1.0.10rc1. The error is: Hammerfall-DSP: wait for FIFO status <= 0 failed after 30 iterations Hwdep ioctl error on card hw:1 : Input/output error. -- Janina Sajka Phone: +1.202.494.7040 Partner, Capital Accessibility LLC http://www.CapitalAccessibility.Com Chair, Accessibility Workgroup Free Standards Group (FSG) janina(a)freestandards.org http://a11y.org If Linux can't solve your computing problem, you need a different problem.

18 years, 5 months

Re: [linux-audio-dev] External audio interface (edirol FA/UA-101)

by Dmitry S. Baikov

> Yes, the FA-101 works but I can't tell you the numbers for latency. The site has a nice table of working setups, but no user emails. I'd ask them directly. > What do you mean with restristrions on buffers (=latency?)? AFAIK, usb cards impose 48kHz (96), 48/3 buffer setup to please everybody in the chain. Jackd needs buffers to be power of 2, and usb-audio - multiples of 1ms. > we consider the 192 kHz more as marketing gag :) That's to compete with Fireface. > Hope that helps. Thank you. Dmitry.

18 years, 6 months

[linux-audio-dev] Re: [linux-audio-user] latency: video card contribution

by Dmitry S. Baikov

> all depends on the definition of "reasonable price". :) I meant light laptop. Better less magic 2.2 kg, where most of light but powerful enough laptops are. Possibly with external CD. And with price around $1500 in Russia. Acer TravelMate 3002 looks good, has fast cpu, but shared video mem. Sony VGN-S480 is cool (nv6200) but $2100. At least it exists. The thing is, I can't afford 2 laptops - a powerful one and a light one. > i can do 26x26, 64 frames/interrupt on my RME digiface cardbus with an > nvidia video > controller. HP Pavilion zd7000 "desktop replacement" > Great! Are you using nvidia binary drivers? Dmitry.

18 years, 6 months

[linux-audio-dev] latency: video card contribution

by Dmitry S. Baikov

Hello! Another set of questions for experienced Linux Audio Users. Mainly it's related to laptop performace. It seems the choice of video system for modern laptop consists of two main alternatives: 1) dedicated high performance controller (nvidia/ati) with closed source drivers 2) shared memory controller (intel) with open source drivers People on Windows forums (no choice for Apples) prefer dedicated controller (with own video memory) because shared memory video degrades performance and increase latencies (they say, and in windows). I suppose, under Linux the things are different, because minimal possible latency is directly related to interrupt processing: closed source drivers have arbitrary interrupt paths, surely are written to maximise video performance and thus, should play a bad role in latency. Moreover they cannot be fixed. Open source ones at least can be fixed. Or I am completely wrong and shared video memory makes it bad on a hardware side (locking pci bus, for example)? So, the question is: what to choose, integrated intel solution or ati/nvidia one (in this case, nvidia is preferred, because of driver quality). Thank you. Dmitry. P.S. As a target system, imagine laptop with RME Cardbus.

18 years, 6 months

[linux-audio-dev] Re: [linux-audio-user] Alsa issues

by Garett Shulman

It comes with alsa-utils. Terrence wrote: > I don't seem to have aconnect. Where would I find that? > >Thanks, >Terrence > >

18 years, 6 months

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Linux-audio-dev September 2005