Linux-audio-user September 2007

linux-audio-user@lists.linuxaudio.org

130 participants
158 discussions

by Leslie P. Polzer

> You're not specifying the price range. However, I'm very happy with my > KRK Rokit 6 active speakers, and I've heard that many others are happy > with them too. They're about £450 in Norway. That's way too much for me right now, and probably a whole lot more than I actually need (both the number of speakers and probably the quality, too). 400 EUR is the **hard** upper limit for me. > To me I prefer active speakers because: > > [...] Thanks for pointing that out, that would have been my next question. The Alesis speakers mentioned by Arnold do already hit my budget hard, but I think 333 EUR is still pretty cheap for them, considering the exclusively positive reviews I found. So maybe I'll go for them, although I'm still unsure because an external amp seems more flexible to me. In any case, I'd still like to collect some more opinions. Do I really need an amp? Doesn't the signal level of the sound card suffice? Consider that I don't want to crank up the volume substantially. Leslie

16 years, 7 months

icecast and live-streaming

by Julien Claassen

Hi! I just set up an icecast2-server and have an ices2 source-client working perfectly. But I'd like to do some realtime-streaming with jack. So I installed darkice 0.18.1 and get this error: DarkIce: VorbisLibEncoder.cpp:142: vorbis lib opening underlying sink error [0] I hear it arises quite a lot, because darkice can't connect to the server. I checked all my ports and compared the config with that of ices. Everything seems to be the same. I wonder: I know that at least on the linux-audio conferences Joern and Eric used icecast and some jack-input. Is there another solution to do it? I'd need a text-based or no I/O client, for not being able to use the GUI. Or does anyone have any idea on the darkice error? Here's some system info and the darkice config: Linux 2.6.21-mm2 # PREEMPT Debian etch (4.0) Self-installed jack and ogg-vorbis tools (linked into darkice properly!) jack 0.107.2 icecast2.3.1 (deb-package) Darkice config: [input] device = jack # OSS DSP soundcard device for the audio input sampleRate = 48000 # sample rate in Hz. try 11025, 22050 or 44100 bitsPerSample = 16 # bits per sample. try 16 channel = 2 # channels. 1 = mono, 2 = stereo # this section describes a streaming connection to an IceCast2 server # there may be up to 8 of these sections, named [icecast2-0] ... [icecast2-7] # these can be mixed with [icecast-x] and [shoutcast-x] sections [icecast2-0] bitrateMode = abr # average bit rate format = vorbis # format of the stream: ogg vorbis bitrate = 128 # bitrate of the stream sent to the server server = localhost # host name of the server port = 8000 # port of the IceCast2 server, usually 8000 password = I12oveBS # source password to the IceCast2 server mountPoint = /progrock.ogg # mount point of this stream on the IceCast2 se rver name = Progressive Rock stream # name of the stream description = Progrock from the 70s to 90s # description of the stream url = http://juliencoder.de # URL related to the stream genre = Progressive Rock public = yes # advertise this stream? I skipeed [general], for it is unchanged to the standard. Thanks for any help! Kindest regards Julien -------- Music was my first love and it will be my last (John Miles) ======== FIND MY WEB-PROJECT AT: ======== http://ltsb.sourceforge.net the Linux TextBased Studio guide ======= AND MY PERSONAL PAGES AT: ======= http://www.juliencoder.de

16 years, 7 months

Muse segfaults

by David Baron

All recent 0.9 variants and the 1.0 preview. I noticed that much of its compiles are being done with -O3. I believe other programs had problems with this as well, that recent gcc/g++ et al are untested with optimization levels other than 1. Lmms-0.3 is compiling with -O2. See if that works. Anybody had the problem? Fixed it?

16 years, 7 months

computer music: Pursuing the Penguin

by Victor Roetman

I just got my new copy of computer music magazine in the mail (September 2007, #117) and there on page 065 is an article "Pursuing the Penguin", four pages about making music with Linux. It's good to see Linux getting a little main-stream exposure. vic

16 years, 7 months

can't get sound in Qsampler...

by Preston C.

I am having trouble with qjackctl and Qsampler. I don't know how to work the connections in qjackctl, and I am not sure if Qsampler is setup correctly. Any help is very much appreciated. Here is what I get from Qsampler: --------------------------------------------------------------------------------------------------- 20:17:24.628 Client connecting... 20:17:24.630 Server is starting... 20:17:24.630 linuxsampler 20:17:24.655 Server was started with PID=3623. lscp_client_create: cmd: connect: Connection refused LinuxSampler 0.4.0 Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck Copyright (C) 2005, 2006 Christian Schoenebeck Detected features: disabled at compile time Creating Sampler...OK Registered sampler engines: 'GIG' Registered MIDI input drivers: ALSA Registered audio output drivers: ALSA,JACK Starting LSCP network server (0.0.0.0:8888)...OK 20:17:27.871 Client connecting... 20:17:27.873 Client receive timeout is set to 1000 msec. 20:17:27.877 Client connected. 20:17:27.879 New session: "Untitled1". LinuxSampler initialization completed. :-) LSCPServer: Client connection established on socket:4. LSCPServer: Client connection established on socket:5. 20:17:30.756 New Channel setup... 20:17:44.549 Channel 0 added. 20:17:44.570 Channel 0 Audio driver: JACK. 20:17:44.597 Channel 0 MIDI driver: ALSA. 20:17:44.599 Channel 0 MIDI port: 0. 20:17:44.601 Channel 0 MIDI channel: 0. 20:17:44.852 Channel 0 Engine: GIG. 20:17:44.873 Channel 0 Instrument: "/home/Preston/Desktop/gig files/S1000 CDRom SteinwayD/PARTITION A/VOLUME 001/32 MEG PIANO.gig" (0). JACK tmpdir identified as [/dev/shm] SSE2 detected Starting disk thread...OK Loading gig file '/home/Preston/Desktop/gig files/S1000 CDRom SteinwayD/PARTITION A/VOLUME 001/32 MEG PIANO.gig'...OK Loading gig instrument... OK Caching initial samples... OK --------------------------------------------------------------------------------------------

16 years, 7 months

equalizer?

by Grant

I'd like to adjust the sound levels coming out of my computer in a manner similar to an equalizer. I'm using a Sound Blaster Live and alsamixer only has the standard bass/treble adjustment available. Is there a way to get a more fine-grained control over the sound before it hits the sound card? - Grant

16 years, 7 months

How do I make persistent or set the default connections in jack?

by Rob Frohne

Hi, I am an amateur radio operator, and I'm using the aoss plugin with jack to route my audio. I have a software defined receiver that takes audio input from the sound card. I route the audio out of that to gmfsk's audio input port. Gmfsk is a radio teletype decoder/encoder. When I change from the receive mode to the transmit mode, the ports for the receiver for gmfsk disappear in qjackctl, and the ones for transmit appear. When I go back, the opposite happens, which is all good. The problem is that the default connections are not what I need, so I have to change them back and forth each time I change from transmit to receive in qjackctrl. How do I set up the default connections the way I want them? I have my .asoundrc file set up as directed here: http://www.mail-archive.com/discuss-gnuradio@gnu.org/msg07215.html Thanks, Rob

16 years, 7 months

[OT] MIT Open Courseware informal study group?

by Paul Winkler

Hi folks, The following has nothing to do with audio, or even with Linux per se, but I think of you as the right sort of people to be interested in something like this :-) Feel free to write me off-list and we can take the discussion elsewhere. I've been programming professionally for about 8 years. I'm self-taught. Lately I've been wishing I had a better grasp of computer science fundamentals, but I can't afford the time or money to attend a degree program. But hey, MIT has most of their academic materials online for free - including textbooks, class notes, and lecture videos! The problem with doing it alone in my spare time is that there are too many other things competing for my attention. I think it would help a lot to have an online discussion group - a group that commits to finish* a given course in a certain number of weeks, and can help each other stay motivated, and help each other with difficult concepts, etc. By "finish" I mean: watch every lecture, read the texts, and complete every assignment. Is anybody else interested in something like that? I'd propose to start at the beginning, with the introductory scheme course: http://ocw.mit.edu/OcwWeb/Electrical-Engineering-and-Computer-Science/6-001… (btw, I got this idea from hearing about some people doing something similar with Knuth's "Art of Computer Programming" books. but of course now I can't find a relevant link.) -- Paul Winkler http://www.slinkp.com

16 years, 7 months

[OT] [Video] [Swedish] Gubbar med bluetoothheadset

by Robert Jonsson

Hi there! Ok... I was actually considering posting this anonymously, but since I have no shame and laugh so hard it hurts looking at it myself I thought... "Gubbar med bluetoothheadset" translates roughly to "Old men with bluetooth headset". Mainly for the swedish speaking folks out there. A modern punk protest song with black metal "theme" about corporate bullshit. Written and performed by Gävel. Of course everything is made with Linux! http://www.youtube.com/watch?v=vGc_4DeKBN4 Regards, Robert

16 years, 7 months

Ripping audio from a video cd

by Mrugesh Karnik

Hi folks, I have a video cd. Somehow, KDE was giving me problems with it, but I ripped it using K3b and now I have the mpeg file. I want to rip out a certain song from the video and convert it to mp3/ogg etc. How would I be able to do this? TIA. -- ---------------------------------------- Mrugesh Karnik GPG Key 0xBA6F1DA8 Public key on http://wwwkeys.pgp.net ----------------------------------------

16 years, 8 months

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Linux-audio-user September 2007