Linux-audio-user

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20661 discussions

by Dave Phillips

Greetings: Last night I tried running the latest Dynebolic and AGNULA live discs from my laptop and from Ivy's desktop machine. Both failed due to different reasons. The desktop machine's CD-ROM drive is old, and I kept getting looped in a 'bad read' error. The laptop is not so stable these days, but both distros failed at the same point: they recognize the A/V chipset (a NeoMagic NM256 piece o' crap) and stall there. I'll have the laptop with me in Karlsruhe, maybe one of the gurus can help me with it then ? Best regards, dp

21 years, 6 months

RE: [linux-audio-user] my live CD dilemma

by Matthew Allen

> -----Original Message----- > From: linux-audio-user-bounces(a)music.columbia.edu [mailto:linux-audio- > user-bounces(a)music.columbia.edu] On Behalf Of Dave Phillips > Sent: Tuesday, April 27, 2004 8:33 AM > Subject: [linux-audio-user] my live CD dilemma > > The desktop machine's CD-ROM drive is old, and I kept > getting looped in a 'bad read' error. The laptop is not so stable these > days, but both distros failed at the same point: they recognize the A/V > chipset (a NeoMagic NM256 piece o' crap) and stall there. Jaromil, Dynebolic's author is very active in the Dynebolic list, and somehow manages to answer just about every question that comes up. In fact he is preparing the 4th release of Dyenbolic (1.3). If you post your problems to list I am very confident he will answer. http://dynebolic.org/ .matt _________________________________________________ Scanned on 27 Apr 2004 16:07:15 Scanning by http://erado.com

21 years, 6 months

[linux-audio-user] Xvnc remote to audio box...

by Russell Hanaghan

Althoug a little off topic, I'm trying to do the following with a Linux DAW... I want to use this box live without mouse, monitor or keyboard. I'm running MDK 10.0, 2.6.5 Kernel. I want to boot it anf log into it with VNC or similar from my Win XP laptop probably using 100MB lan cards on both. I have VNC setup to fire up on boot. I can get a login on screen " :1 " but when I try to run Jack, it seems not to see the alsa drivers correctly. Is it because other X server desktops don't have the machine privileges that the default 0 screen has? I have everything working fine on a regular login on the local box... Any Xvnc gurus out there. I am not locked into vnc either...if there is something better for the outlined purpose, I'm up for that too. I dont mind which GUI I use...I have Xfce4, Blackbox, iceWM, fluxbox, etc,etc. Thnx R~

21 years, 6 months

[linux-audio-user] Opinions on M-Audio Audiophile 2496 / USB or similar?

by daniel.vincent＠blueyonder.co.uk

Thanks for all you help / comments on this. I've decided to just get an Audigy 2 card instead! Hopefully this will be a bit easier to get running... daniel www.onionjack.co.uk

21 years, 6 months

[linux-audio-user] Opinions on M-Audio Audiophile 2496 / USB or similar?

by daniel.vincent＠blueyonder.co.uk

Hi everyone It's that time of the year when I convince the missus that a studio PC upgrade is "necessary" and I go out and buy new hardware :-) Is anyone on the list running either of the two M-Audio setups currently available: the Audiophile 2496 (PCI) or the Audiophile USB? Alternatively, can anyone recommend something similar? Incidentally, I'm currently running Mandrake 10 (Community), with the 2.6x kernel... cheers! daniel www.onionjack.com

21 years, 6 months

[linux-audio-user] Stereo delayed crossmixing

by andrew＠qpsf.edu.au

Hi, New to the list and looking for a package to do stereo delayed crossmixing. What I mean by this is to take a stereo signal (from CD, by preference) and send right and left channels through delay lines, individually adjustable to sub-millisecond delays, then mix each delayed signal with the un-delayed signal of the opposite channel, then feed to the output device. Processing in real-time (latency end-to-end is not an issue.) Note: there is *no* feedback of delayed signals - echo is not what I'm after - this is strictly feed-forward delayed crossmixing. Frequency-binned multiple delay lines would be an interesting add-on. I've been searching for packages capable of doing this - if anyone is familiar with something that would do, I'd be really grateful for advice. TIA, Andrew

21 years, 6 months

[linux-audio-user] linux audio porto Alegre

by juto aviten

Hello, do you know some people involved in gnu/linux & audio in Porto Alegre in Brazil, I will go there and I would like to meet some people there and maybe meet people who organise workshop around sound and linux. Just in case you have some ideas... thanks juto

21 years, 6 months

[linux-audio-user] creamware luna2

by juto aviten

Hello, is someone already this kind of sound card : creamware luna2, I would like to buy one but it seems that alsa not reconize it... do you know is interesting to buy one or is totally a closed hardware? thanks a lot juto

21 years, 6 months

[linux-audio-user] Assistance with splitting up stereo channels in ALSA is appreciated.

by Malcolm Baldridge

Greetings Esteemed Gentlemen: I've been hacking around with ALSA (1.0.3b), Jack [CVS as of two weeks ago], and other audio miscellanea and have found it all to work wonderfully. I've managed to add more tasks to my already overworked home server (which runs my entire networking/firewalling/routing and service operations). A summary of just the audio tasks of possible interest and background: I have a 1.6Ghz Pentium 4 (pre-Northwood) with the PC133 chipset (i840), which has 82801BA-ICH2 audio hardware with the usual AC97 codec. Kernel is 2.4.25-lck1 [Con's low-latency patches, as well as HZ=1000 timebase changes.] The audio output jack is connected to my MERLIN phone system's music-on-hold port, which is fed mono/downmixed output via "mpg123 -z -q -2 -m". I have each (L + R) channels of my LINE-IN jack connected to two Phone Patch boxes to monitor phonecalls "for Quality purposes" automatically. I had to write that recording software, which does configurable SQUELCH noise gating, and the like. The phone patch compensates for the differential levels of the send/receive sides of phone conversations, so the resulting mix has each side of the phonecall sounding about the same amplitude. It's the only way to do this. I found the Jack audio interface to be interesting and friendly, so I wrote the software to the Jack API, starting with one of the example client applications included with Jack. It's multi-threaded and event-driven, with callbacks from Jack when audio arrives. It works well. I then spawn off a child process to "lame -S --silent --nohist -q 2 -h -v -b 8 -B 32" with some ID3 tags representing the call's origin time, and any decoded DTMF tones, etc. This too works better than I imagined. Since it's spawned from the main process of my monitoring program, I don't tie up the audio monitoring/capturing threads during the encoding/processing operation. The jack and audio capturing threads run at RT priority, the rest run at normal priority. I run the encode jobs at nice +18. None of this skips ever, even during large file uploads/downloads from my 100BaseT connected SAMBA users, or during updatedb. This brings me to my question. It turns out that I should be sending a "beep" down the lines I am monitoring to notify the parties that they are being recorded. I have a spare output channel [the R channel of the main PCM device]. The L channel is providing music-on-hold, remember, via mpg123 which is using the ALSA driver. How can I configure ALSA (via asoundrc?) to split the PCM device into two independently accessible components for the L and R channels? I'm very pleased with mpg123 and do not feel I need to reinvent any wheels on that side. I don't feel it necessary to give Jack more to do, so I'd like to stay out of Jack if possible. (I run jackd with "jackd -R -d alsa -S -C -p 4096 -M -n 2 -r 11025"). The documentation for ALSA's asoundrc aspires for more than it can attain, alas. I suspect I need to configure some bindings, but it's not at all clear how I specify which channel in the device specification syntax. hw:0,0 refers the first device of the first soundcard, for example. But how do I specify the first (L) channel of the first device of the first soundcard? Ultimately, all that matters is Quality, =MB= -- A focus on Quality.

21 years, 6 months

[linux-audio-user] well well

by Aaron Trumm

Well guys, I have been up all night and you'd think I'd've been trying to recover my crucial data on my crashed harddrive on my main linux audio box. BUT NOOOO. I've been obsessing over ripping mp3s on my secondary box. So I spent some time failing at compiling jack cuz I hate grip on my machines cuz it's so slow and unreliable at least on my machines, and then said screw this and learned some bash and made my first usuable script tee hee. i'm so proud of my newbie self that I thought I'd share it. don't blame me if it blows you up. it shouldn't, it's a pretty simple inane cdparanoia/lame using script. fun. did I do anything horribly stupid? here: --- #!/bin/bash # Aaron Trumm's cdparanoia/lame mp3 ripping script # It simply takes all the tracks on a cd, rips, converts to mp3, and names them a standard file name # It asks you for the artist and album. # Very simple but useful for me. ARTIST= ALBUM= REMOVE= X= echo "Artist: "; read ARTIST echo "Album: "; read ALBUM echo "Delete wav files afterwards y/n? "; read REMOVE cdparanoia -B for X in 1 2 3 4 5 6 7 8 9 do if [ -e track0"$X".cdda.wav ] then lame track0"$X".cdda.wav "$ARTIST"_"$ALBUM"_"$X".mp3 fi done for X in 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 do if [ -e track"$X".cdda.wav ] then lame track"$X".cdda.wav "$ARTIST"_"$ALBUM"_"$X".mp3 fi done for X in 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 do if [ -e track"$X".cdda.wav ] then lame track"$X".cdda.wav "$ARTIST"_"$ALBUM"_"$X".mp3 fi done for X in 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 do if [ -e track"$X".cdda.wav ] then lame track"$X".cdda.wav "$ARTIST"_"$ALBUM"_"$X".mp3 fi done if [ "$REMOVE" == "Y" ] || [ "$REMOVE" == "y" ] then rm -rf *.wav fi

21 years, 6 months

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Linux-audio-user