Linux-audio-user February 2009

linux-audio-user@lists.linuxaudio.org

144 participants
115 discussions

by David Hugh-Jones

Hello all I've been trying to fix this for months on and off and have had no luck. I'm afraid it's Skype-related, but I hope there is some general interest. My problem is that usually, when I record from my USB webcam microphone (a creative Live! USB cam), the pitch is shifted upwards so I sound like on helium. But, sometimes, this doesn't happen. I can't identify the difference. Can anyone suggest what I should be looking for? I tried grepping /sys/snd*/parameters and comparing them for when the mike works and when it doesn't; they are identical. My kernel is 2.6.17-12; Alsa version 1.0.17; a generic Ubuntu Intrepid setup, using PulseAudio. Cheers David

15 years, 10 months

Re: [LAU] Current favourites for new hardware?

by sonofzev＠iinet.net.au

On Thu Feb 19 22:08 , "Gordon J. C. Pearce MM3YEQ" sent: >What are the current recommendations and "avoids" in motherboards and >graphics cards these days? > >I'm currently using a Sempron 3400 with a completely shite Via >motherboard (slow, buggy onboard sound, slow, buggy onboard network, >pathetically slow onboard video since my NVidia card failed). Are there >any particular chipsets to go for? > >Gordon > >_______________________________________________ >Linux-audio-user mailing list >Linux-audio-user(a)lists.linuxaudio.org >http://lists.linuxaudio.org/mailman/listinfo/linux-audio-user >) It depends on what the purpose of your machine is... HTPC, audio production, gaming.... I would generally keep away from VIA though. I have no experience with the current AMD line of chips (7xx series).... The current and slightly older Intel chipset line up are good for disk throughput and compatibility (so long as you have a reasonably new distro/kernel for ones with JMicron disk controllers) Can't tell you about the audio or video on these .. as my intel chipset board is on an audio production system with a soundcard for that purpose and does not have onboard sound. My HTPC is a 939 motherboard with an ATI rs486 chipset .. but I am using an nvidia video card... the audio (using optical out) works magically.. I actually transferred the system from an n-force board and had very little to do to get it working.... . I would always recommend an Nvidia n-force board but these are very pricey.. I also have a preference for nvidia based video cards, although propietary, I have never had any trouble with the drivers even for linux gaming... As for mobo brands... my last few have been gigabyte.. but I have had abit, MSI and I have a DFI on my HTPC... With a new purchase, go for something with solid capacitors and preferably no onboard fans... (not many have them anymore)... Generally a mid-range model will be more reliable than the bottom end, but you probably don't need a top of range motherboard unless you are planning on serious gaming. I have a personal preference for gigabyte at the moment.. but there probably isn't much difference between the brands right now.

15 years, 10 months

Starting a bunch of jack client

by thomas skellund

How do I start say 5 small jack applications and connect them all as i wish? Im thinking: 1. Start qjackCtl with appropiate client bindings set i Patchbay 2. Start clients with script What's better or smarter you think? Thomas (PS lash not an option for me)

15 years, 10 months

galan development continues

by torbenh＠gmx.de

hi... i have taken up gAlan development again. galan is basically a mixture of pd and reaktor. it has event processing like pd, but the control gui is placed into a separate window. this screenshot shows what things can be built with it: http://galan.sourceforge.net/galan-with-gradient.png i have recorded 2 small demos/tutorials yet, which explain some things. http://galan.sourceforge.net/galan-tut01.ogv http://galan.sourceforge.net/galan-tut02.ogv current development focussed on bugfixing, but i also added midi learn. the website is still a bit outdated. http://galan.sourceforge.net get the code with: git clone git://repo.or.cz/galan.git -- torben Hohn http://galan.sourceforge.net -- The graphical Audio language

15 years, 10 months

Bpm detection/quantize

by surian

Hi, I have an old jazz recording that I would like to add some beats with hydrogen. But the song doesn't follow any BPM, since it wan not recorded with click. So, what I would Like to do is adjust the tempo of the song to match the BPM I want. There is any program that could do that for me? I think maybe something using rubberband<http://www.breakfastquay.com/rubberband/>, but i never used it. thanks friends surian

15 years, 10 months

splitting a large file

by Emanuel Rumpf

Oh, I forgot to change the topic, so again.. Hi I'd like to split a large file ( in w64 wav format ) into smaller pieces of about 3 minutes length. (and later convert the pieces to mp3) Any suggestions how to reasonable (fast and simple) accomplish that? Thanks -- Emanuel Rumpf

15 years, 10 months

an rt kernel for ubuntu 8.10 ?

by Dave Phillips

Greetings, As some of you know, I've had nothing but trouble with Ubuntu's rt kernel, specifically 2.6.27-3-rt from the current repos. As a result I've been working in non-realtime, and I'm not happy about it. So, what's my best procedure here ? Shall I compile my own kernel, and if so, what's the currently recommended kernel source package ? I want decent realtime performance from this machine, a 2 GHz notebook, and I'm willing to do some building if necessary. Is the patch for ALSA (that showed up on this list) included in any contemporary sources ? Is anyone here running Ubuntu 8.10 with an rt kernel, and if so, which one ? Best, dp

15 years, 10 months

64studio, FFADO, no luck

by Ken Restivo

Well I decided to try again to bring my 64-bit Intel Micro-ITX board alive, running 64studio and Ardour, to use as an alternate DAW machine at a friend's studio. I gave up trying to make a headless softsynth out of it, because it wouldn't boot off of a USB flash drive. Now that I have the Atom-based EEE, that's working out rather well as a portable softsynth, so I'm trying to find another use for the Micro-ITX since it's been sitting around unused for many mohths. The studio has two Digidesign Firewire audio interfaces there, one with 4 inputs and one with 8. I'd ultimately like to have them both running, sync'ed up, for 12 tracks of audio. Problem is, 64studio 2.1 seems to have an ancient version of FreeBoB (no FFADO) and an even more ancient version of JACKD (0.103.0, the same one I've been running for two years now on my laptop). Just for grins, I tried to hook up the Digi Firewire box, but jackd said "Root node has no children!" over and over again, then SIGSEGV'ed. Oh well. gscanbus showed the firewire interface just fine, and the binary package of FreeBoB doesn't seem to include the "test-freebob" script and tools. I dunno. Should I go with Sid? Or do any of the other Debian-derived audio distros support FFADO right now? I was hoping to show off how easily a 1.6Ghz 64-bit machine could record 12 tracks of audio with low latency using Linux. Alas, the knock-yer-socks-off Linux demo might have to wait a while. -ken

15 years, 10 months

first recording effort, ardour and my new guitar

by Loki Davison

HI all, despite the technical difficulties outlined in the other email some recording did occur. It's a cheesy love song inspired by recent events, some lyrics hopeful/prophetic/fictitious ;) Please tell me what you think. I really need singing lessons.... Same idea but in instrumental and vocal forms: http://yoyo.its.monash.edu.au/~loki/scarlet_hair_novocals.mp3 http://yoyo.its.monash.edu.au/~loki/scarlet_hair.mp3 Instruments: acoustic guitar, electric bass and tambourine. Hope it's ok, Loki

15 years, 10 months

Re: [LAU] Bpm detection/quantize

by sonofzev＠iinet.net.au

On Wed Feb 18 14:04 , Lee Revell sent: >On Sun, Feb 15, 2009 at 7:23 PM, Roger E gurusonic(a)gmail.com> wrote: >> I suggest we mandate a licence of competency before allowing a recording >> to be played on the radio. The "pop" charts are very mediocre lately. >> Then I guess a lot of people have mediocre taste in music. Sometimes I >> hear a song and regret it's illegal to shoot people in the head. :) > >Too subjective. I'd be satisfied if they just banned that Antares >Autotune digi-warble effect that's all over every freaking R&B track >made in the last few years. > >If I'd known it would get this bad I'd have killed myself the day >Cher's "Believe" came out. ;-) > >Lee And I always thought it was poor vocoder programming... and I hear you Lee, I hear you

15 years, 10 months

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Linux-audio-user February 2009