Linux-audio-user June 2008

linux-audio-user@lists.linuxaudio.org

138 participants
116 discussions

Laptop Sound Adapter for Ripping my Vinyl Album Collection

by Kevin Cosgrove

I'm gonna bite the bullet and rip all my music to play it around the house via my computers. I've got really good music gear for the job in my home studio. But, my turntable and record collection is just about as far from there in my house as is possible. I don't want to move either set of gear. Instead I want to get sound adapter for a laptop I've got and do the ripping at the location where my turntable resides now. My laptop has USB. I don't know if it's USB1 or USB2. But, I can get a cardslot to USB adapter for cheap, if need be. I'm planning to store my digital music losslessly, in either FLAC or WAVPACK. I want the music to sound as good after being ripped as it did on my pretty good home stereo via the turntable. I know I need at least 2 channels, but I'd go with 4 channels on the adapter, if it didn't cost me double. What would you recommend as a sound adapter for this job, and why? Thanks.... -- Kevin

16 years, 4 months

Editing sound via shell

by Daniel Yokomizo

Hi, I tried to find some tool to edit sounds using the shell (basic things like changing volume, tempo, etc., nothing too fancy) but I failed to find something other than Rubber Band (which I'm having trouble making work, I'm on 64bit Debian btw). I usually just use Audacity for this stuff but now I have a large number of files to edit and scripting is the best choice. Is there any other good tool for this task? Best regards, Daniel Yokomizo

16 years, 4 months

Problems with LV2 plugins

by Pau Arumí Albó

Hi, I'm trying to have LV2 plugins and hosts work but I'm having problems. The involved packags (compiled from tarballs) : - slv2-0.4.5 (because latest 0.5.0 caused zynjacku host to not compile) - ll-plugins-0.2.0 - lash-0.5.4 - lv2core-2.0 - zyn-1 - zynjacku-1 - lv2dynparam1-1 Running in a Ubuntu 08.04 Linux 2.6.24-19 The problem is that I can't load any ll-plugin with any host (zynjacku or lv2_jack_host), while zyn-1 does work (only in zynjacku since it needs specific extensions) I believe that the clue to the problem is shown in lv2_inspect result below. Any idea?? Pau $ lv2_inspect http://ll-plugins.nongnu.org/lv2/klaviatur#0 rdf_node.c:817: (librdf_node_get_uri) assertion failed: object pointer of type librdf_node is NULL. (... and MANY similar messages) http://ll-plugins.nongnu.org/lv2/klaviatur#0 Name: (null) Class: Plugin Has latency: no Bundle: file:///usr/lib/lv2/klaviatur.lv2/ rdf_uri.c:467: (librdf_uri_as_string) assertion failed: object pointer of type librdf_uri is NULL. Binary: (null) Data URIs: file:///usr/lib/lv2/klaviatur_gtk.lv2/manifest.ttl file:///usr/lib/lv2/klaviatur_gtk.lv2/manifest.ttl Required Features: Optional Features: ------------------------------------------------------------------- $ lv2_inspect http://home.gna.org/zyn/zynadd/1 rdf_node.c:817: (librdf_node_get_uri) assertion failed: object pointer of type librdf_node is NULL. (... and many similar messages.) http://home.gna.org/zyn/zynadd/1 Name: zynadd Class: Instrument Has latency: no Bundle: file:///usr/local/lib/lv2/zynadd.lv2/ Binary: file:///usr/local/lib/lv2/zynadd.lv2/zynadd.so Data URIs: file:///usr/local/lib/lv2/zynadd.lv2/zynadd.ttl file:///usr/local/lib/lv2/zynadd.lv2/manifest.ttl Required Features: http://home.gna.org/lv2dynparam/rtmempool/v1 Optional Features: http://home.gna.org/lv2dynparam/v1 Port 0: Direction: Input Type: MIDI Symbol: midi_in Name: MIDI in Properties: Port 1: Direction: Output Type: Audio Symbol: output_left Name: Output Left Properties: Port 2: Direction: Output Type: Audio Symbol: output_right Name: Output Right Properties: rdf_uri.c:412: (librdf_free_uri) assertion failed: object pointer of type librdf_uri is NULL. (... the same message repeated MANY times)

16 years, 4 months

Re: [LAU] Large live recrodings ?

by Kjetil S. Matheussen

Svend-Erik Kj?r Madsen: > > Hey > > What would you bee using if you should record a large music file in > let's say 14-16 tracks ? Next month my band have a live-gig I want to > record, and I am on the brink of letting my old and heavy ADAT tape > machines be left back, and only bring my notebook and my multiface amd > my mic-preamps for recording. > jack_capture: jack_capture --port system:capture* Or if you only want to record the 14 first inputs: jack_capture -c 14 --port system:capture* > Is it stable and secure to record in Ardour in one go ? I could raise > latency since we're not using any kind of live monitoring from the > computer. > Ardour is probably stable and secure enough, but jack_capture is made only for recording so the chance of unwanted surprises with jack_capture might be theoretically smaller. No, seriously, both of them should work fine, but jack_capture is simpler to use.

16 years, 4 months

Guide to Drum & Percussion Notation

by Leslie P. Polzer

This little booklet helped me to get started and serves well as a reference for later: http://web.mit.edu/merolish/Public/drums.pdf Leslie -- My personal blog: http://blog.viridian-project.de/

16 years, 4 months

Blast beats

by Leslie P. Polzer

Here's a nice site with Blast beat drum patterns: http://mitglied.lycos.de/Gerulat/DD/Workshops/Blast.html It's in German, but I guess you won't have much trouble with that. Leslie -- My personal blog: http://blog.viridian-project.de/

16 years, 4 months

recording with firewire device and webcam / alsa and freebob together

by Nick Urban

Hello, I just joined the list, so I hope this is the right place for this question.. I have a M-Audio Firewire solo which I use with jack and firebob to record audio. I was thinking about making a little video with my Quickcam 9000 Pro, but because the audio quality of its built-in mic is poor, I wanted to use my nice studio mic instead. I am currently using guvcview to record with the camera, and it has a selection of input options, on which, when jack is running, an extra option appears: "system". I thought, wow, maybe this actually supports jack! But when I try using that option it just crashes. Oh well, I didn't expect that to work anyway. But I thought, okay, maybe I can set up a virtual ALSA device that somehow connects to jack. Then I could record for that device, which would actually just be a jack sink (which I would have connected my mic input to). I can't figure out any way to do that, though. I searched around for ALSA jack clients, couldn't find anything. I tried running two different jack instances (one with alsa, one with freebob), but they didn't seem to be aware of each other when I looked at the connections panel in qjackctl. Does anyone have any suggestions here? Another reason I'd like jack and ALSA to play together is so that I can use my speakers (which are connected to my PCI sound card) to play audio from Ardour while I am working on takes with my firewire interface. Thanks for your help! Nick

16 years, 4 months

OT: linux phone?

by Ken Restivo

I may need to buy a cellphone soon. But I'm a militant Free Software zealot so I refuse to spend any money on anything that isn't open and free, which is one reason why I've resisted cellphones for such a long time. But it seems like there are a few options now for Linux-based phones, so I'm looking around. Alas, OpenMoko looks the most promising, but they're out of stock, and, AFAICT the "phones" still can't make or receive calls yet. Oh well. The Google initiative seems stalled to me; and also I'm not so sure about the licensing. This PurpleMagic looks interesting though: http://www.purplelabs.com/product-purple-magic.php?PHPSESSID=9ead9cbe0bf6cd… But I haven't found a lot of technical info on it yet. Anyone messed around with these? Any pitfalls to look out for? The OpenMoko has USB so I was looking forward to maybe using it as a softsynth and playing shows with it. The Purple Magic doesn't have any such thing though. -ken

16 years, 5 months

Hardware: elektr piano / keyboard

by schoappied

Hi, I want to buy a elektr. piano or an keyboard if the first it to expensive. I have the following needs: - piano like, sound and touch. - I want to be able to connect it to my computer (maudio audiophile, maudio dmp3 preamp) - I want to be able to work with MIDI - I want to use it on Linux - not to expensive... but I like quality too.. Price class: 150- 350 euro? But I like information about the different piano's/ keyboards in the different price class... Thanks in advance. Dirk

16 years, 5 months

Re: [LAU] Envelope Control via Side Chain?

by Kevin Cosgrove

On 27 June 2008 at 15:49, "Bill Sack" <bsack23(a)gmail.com> wrote: > i will usually accomplish something like this with the aid of pd ... write a > little dynamics-processing patch (ducking or gating or ...) in pd, then use > jack and the appropriate sends and returns to & from ardour to get sound to > it. works great and will all work in linux, though it assumes some casual > ability with pd-programming. I don't know pd. But, I'm good with shell and perl and command-line. Is there a quick-start guide for pd, or a how-to for specific tasks in pd? > as far as i know, sidechain processing is still on ardour's 'to do' list? OK. Thanks... -- Kevin

16 years, 5 months

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Linux-audio-user June 2008