Linux-audio-user

linux-audio-user@lists.linuxaudio.org

3 participants
20601 discussions

[linux-audio-user] playing chords to help practise improvisation

by Peter Jay Salzman

hi all, i just started to play around with jazz improv. what would be really useful is if i can define a set of chord changes: Dm7 G7 Em7 A7 Am7 D7 Abm7 Db9 and have my computer play it over and over again so i can improvise over the key changes. it would be great if... it can loop: so i don't have to record the progression 100 times if i want to play around with this 100 times. the timing can change wildly: i can't really do much at the speed which i normally play "satan doll". the chords come too fast. and it's hard playing chords unnaturally slow (although i suppose that might be a good thing to practise). there were some kind of quarter note percussion that gives me a beat so know when the chord is about to change. it doesn't need to sound good at all. my improv should sound good. ;) is there an app i can use for this purpose? pete -- Fingerprint: B9F1 6CF3 47C4 7CD8 D33E 70A9 A3B9 1945 67EA 951D

22 years, 3 months

[linux-audio-user] Re-encoding Stereo mp3's into Mono mp3's

by Steven P. Ulrick

Hello, Everyone :) My question is, is it possible to take an already existing mp3 (128 kBits, 44.1 kHZ, joint stereo) and re-encode it so that it is in mono (at 128 kBits of course). I figured out how to accomplish this task by using the command mpg123 -w to convert the mp3's into wav files, and then I use the following command to encode the wav file into a mono mp3: lame -b 128 -m mo (In both cases, of course I used the appropriate file names, in the appropriate order) What I would like to do, is re-encode the stereo mp3's directly into mono, without having to go through the time consuming step of converting the mp3's into wav files. In case you were wondering, one of the reason I want to do this, is that I have some old gospel songs from the early to mid sixties, and, like a lot of music from that era, the stereo is really cheesy: for example, almost all the instruments in one channel, and all the vocals in the other channel. This example is a bit extreme, but if you've ever heart "Left My Sins Behind Me" by the Alex Bradford Singers, you'd see why I want to convert to mono :) Thanks in advance for your help :) Steven P. Ulrick

22 years, 3 months

[linux-audio-user] Hammerfall HDSP 9652 Installation

by Mark Knecht

Hi, My new Hammerfall HDSP 9652 arrived. (The new PCI card, not the DigiFace/MultiFace configuration.) The Alsa Card Matrix says it's supported, but the version of alsaconf (0.9.0-1) installed on my system does not recognize it. Questions: 1) Does a newer version of alsaconf support this directly? 2) Can that version of alsaconf be installed without changing the version of Alsa that I'm using? (I'm rpm based from the Planet and don't want to break dependencies if possible.) 3) Is there a simple, straightforward way for me to install Alsa support for this card by hand? If so, where might I find the instructions? Thanks in advance, Mark

22 years, 3 months

[linux-audio-user] Clicking noises - how to get rid of?

by Pauline Powledge

Greetings, I am trying to convert some old cassette music to audio CD format. I'm very new to Linux audio, mixers, and so forth, and have some newbie-type questions to ask. I'm running the 2.2.14 kernel with the ALSA drivers, version 5.12a, es1968 module, with an es 1978S soundcard. The problem I have is that I get a loud, persistent, evenly-spaced clicking sound in my input. My mixer is set up with 100% volume, unmuted, and captured on the MIC input, and 20% volume, unmuted, on the Input Gain. Everything else is muted. I have tried running ecasound with "-r -z:nointbuf", but that doesn't seem to help. The dropouts are so consistent -- almost like a metronome -- that I'm not inclined to think this is a latency issue, so I doubt patching the kernel will work. I do my recording with X Windows off and my 802.11B card out. Does anyone have any suggestions about what I ought to try next? When I searched the archive, I saw mention of a problem of persistent clicking with another soundcard that was solved by going from a 2.2 kernel to a 2.4 kernel. Is that a known issue with other soundcards too? Thanks in advance for any clues, Polly

22 years, 3 months

[linux-audio-user] metronome apps

by Dave Phillips

Greetings: Yesterday I wanted to practice with a metronome, so I decided to download one of the listings from the Linux Soundapps pages. Alas, I got no joy: 1. cmetronome's server is unavailable 2. gTick wants to use /dev/sequencer and isn't working for me with ALSA 0.9.0beta10 3. gMetronome is a visual-only metronome and I need sound So I went looking for something else. I found Metronome on SourceForge, but its based on gTick and suffers the same poor output. I also found DiffM, a Java-based metronome that is said to work under Linux, but the available package only works with MacOS. So I still don't have a metronome, and I don't feel like compiling Ardour just to use it as a practice amenity. So, does anyone have a lead to a working software metronome for Linux ? Does anyone have the sources to cmetronome ? Or is anyone interested in writing a simple metronome application ? Back to the hack... Best regards, == Dave Phillips The Book Of Linux Music & Sound at http://www.nostarch.com/lms.htm The Linux Soundapps Site at http://linux-sound.org

22 years, 3 months

[linux-audio-user] chebstortion in swh-plugins: How *should* it sound?

by Frank Barknecht

Hi, I played a bit with chebdistortion from the SWH set, and I'm wondering, if what I get is the intended result. I doesn't sound like an effect useful for anything to my ears, but I might have a broken version or something. I made an short example at http://footils.org/snd/cheb.ogg with a clean signal, then the chebdistortion kicking in. Is it intent this way? ciao -- Frank Barknecht _ ______footils.org__

22 years, 3 months

[linux-audio-user] CD covers & booklets

by Howard Sanner

I've been trying to use Kover 0.8.4 to create CD tray cards, and, more importantly, inserts. This is the latest version of Kover I could find that does not require KDE 3.0. I'm using 2.2.1 under Mandrake 8.1. The problem I haven't been able to work around is creating the INSIDE of a CD booklet, i.e., pages 2-3. I can get it to put the title on the RH panel and a contents list or whatever I want on the LH panel. However, I can't start on the LH panel with the inside of the booklet and have the text wrap around to the RH panel. Does anyone have ideas? Is there a better program out there for doing this? FWIW, none of this stuff can be downloaded from an Internet database; it's all recordings of live opera performances. Thanks for all suggestions. I realize this is not the main emphasis of the list, so please feel free to reply privately. Howard Sanner flagstad(a)mindspring.com

22 years, 3 months

[linux-audio-user] Advanced Linux Sound(ALSA), PPC, M-audio Duo

by John M Phillips

I am trying to user USB-AUDIO product with a TI laptop for a portable digital recorder. I have followed the instructions at http://www.alsa-project.org/alsa-doc/doc-php/template.php3 ?company=Midiman&card=USB+Audio+Duo&chip=Cypress+AN2131XX&module=usb-audio The compiles for building alsa-driver-0.9.0rc6, alsa-lib-0.9.0rc6, and alsa-utils-0.9.0rc6 went smoothly. The utility snddevices ran with no errors. When running the commad alsamixer, I get the error message "No mixer elems found." Proc/asound appear to have the correct entries dr-xr-xr-x 4 root root 0 Dec 7 16:55 card0 -r--r--r-- 1 root root 0 Dec 7 16:55 cards dr-xr-xr-x 2 root root 0 Dec 7 16:55 dev -r--r--r-- 1 root root 0 Dec 7 16:55 devices lrwxrwxrwx 1 root root 0 Dec 7 16:55 MidimanDuo -> card0 dr-xr-xr-x 2 root root 0 Dec 7 16:55 oss -r--r--r-- 1 root root 0 Dec 7 16:55 pcm dr-xr-xr-x 2 root root 0 Dec 7 16:55 seq -r--r--r-- 1 root root 0 Dec 7 16:55 timers -r--r--r-- 1 root root 0 Dec 7 16:55 version With Proc/asound/card0 having -r--r--r-- 1 root root 0 Dec 7 17:00 id -rw-r--r-- 1 root root 0 Dec 7 17:00 oss_mixer dr-xr-xr-x 3 root root 0 Dec 7 17:00 pcm0c dr-xr-xr-x 3 root root 0 Dec 7 17:00 pcm0p -rw-r--r-- 1 root root 0 Dec 7 17:00 stream0 I found the contributed utility qinit and it runs correctly with the hw name = "hw:0,0". With the "dmasound_pmac" module, dd if=/dev/dsp of=/tmp/sound.out bs=1024 count=1 would produce a file filled with unsigned bytes. The rest of the day was spent trashing about in config files to no effect. Questions: Should alsamixer work with the M-Audio Duo? After enabling with qinit should dd dump data? Any help, or fellow travellers would be appreciated. John Phillips

22 years, 3 months

[linux-audio-user] Re: Audio Help...

by Patrick Shirkey

I have forwareded this on to LAU also. From reading your description (nicely worded too, have you considered writing docs?) It seems like you are mising something either very simple when trying to record from JACKed apps or your driver is not working correctly. Have you tried doing the basic arecord test? Set the capture channel with alsamixer then arecord -f cd -D hw:0,0 -d 10 somefile.wav This should record a cd quality stereo track from the first channel on your first sound device. If that doesn't work then none of the other apps could be expected to either. Personally I still use arecord for recording and edit with other apps once I have file to work with. Ryan Beisner (home) wrote: > Hi Patrick > > I'm just having a heck of a time getting all my things in order here. > Any help you can provide would really be appreciated. Here's what I > have: > > System: > Redhat 8 / Kernel 2.4.19-1.ll > PIII 800 / 512MB RAM / 60GB > SBLive Value PCI > >>From CCRMA: > Kernel 2.4.19-1.ll > alsa (alsaplayer alsamixer amixer etc) > jack > ecasound (and ecawave) > audacity > rosegarden > muse > meterbridge > qjackconnect > > I have followed the jack and ecasound documents, and successfully set up > a scenario like this to test: > alsaplayer -o jack -> meterbridge -> alsa pcm out > ... and it works. = ) > > (these are not the exact commands issued) > > I have also done this: > ecasound -i:somewave -o jack -> and that works too. > > I've come to the conclusion that all these audio apps should be run as > root in order for them to play together ... so that's what I do. I > realize they could be suid etc. > > > My problem is: I CANT RECORD = ( > > In alsamixer, with the Line set to CAPTURE, I set up the following: > > ecasound -i:jack -o:somewave -> it launches without error, and records > to a wav file. qJackconnect reflects the proper routing connections. > > But the wav is dead air... silence for as long as I record. > > OK so I thought I might have missed something with the whole jack setup > so I kill jack and try it with ARecord then again with Audacity. Same > story. Silence. > > > > ---DUAL CAPTURE REQUIRED? Weird. > OK now I notice a "capture" item in alsamixer. So I simultaneously > hilight LINE and CAPTURE to do capturing. With the LINE muted, audio is > still monitored (it shouldn't be) unless I de-select the CAPTURE item > from capturing, but then it won't record. Hope that made sense. > > So I give it a go... ignoring the "I can't mute it" problem. arecord > still silent, same with the jack setup. But now Audacity records ... > and it's garbled (sounds like playing a 32bit file at 16bit or > something, plus it's not a fluid recording). And I see that when you > record in Audacity, it forces 32-bit float for the format. I think > maybe if I could convince Audacity to operate strictly in 16-bit, it > might work. > This may have already been fixed in cvs. I recall something similar being discussed recently. > > > I've tried also to capture CD Audio in the same fashion. I've seen > claims of the same problem dating back to 2000 at geocrawler etc... but > no info to fix it? > > The card's capture functions work in a windoz box. > > > > What would you suggest? I'm at a loss. > > > > > Thanks in advance, > > -Ryan Beisner > > > > ps. System is tuned nicely. Jack looks like this when it's running: > > load = 0.3496 max usecs: 43.216, spare = 11565.784 > load = 0.4025 max usecs: 52.861, spare = 11556.139 > load = 0.3142 max usecs: 26.222, spare = 11582.777 > load = 0.2733 max usecs: 26.975, spare = 11582.025 > load = 0.2133 max usecs: 17.801, spare = 11591.199 > load = 0.1753 max usecs: 15.932, spare = 11593.067 > load = 0.1941 max usecs: 24.719, spare = 11584.281 > load = 0.1540 max usecs: 13.230, spare = 11595.770 > load = 0.1292 max usecs: 12.119, spare = 11596.881 > load = 0.2109 max usecs: 33.976, spare = 11575.023 > load = 0.2310 max usecs: 29.149, spare = 11579.852 > > > > -- Patrick Shirkey - Boost Hardware Ltd. For the discerning hardware connoisseur Http://www.boosthardware.com Http://www.djcj.org - The Linux Audio Users guide ======================================== Being on stage with the band in front of crowds shouting, "Get off! No! We want normal music!", I think that was more like acting than anything I've ever done. Goldie, 8 Nov, 2002 The Scotsman

22 years, 3 months

[linux-audio-user] Italian LinuxDay Slides

by Emiliano Grilli

Hello everybody, I did a small presentation about the state of Linux audio & music apps on 23rd of November, for the Italian LinuxDay promoted by the Italian Linux Society. I was asked for by some members of FerraraLUG (Ferrara Linux User Group), and now they have put some material on the web. It's in Italian, but if you want to take a look, or reuse the slides... The slides: http://linuxday.ferrara.linux.it/files/linuxday2002-grilli.sxi The audio stream (ogg format): http://linuxday.ferrara.linux.it/audio/32kbps/emilio.ogg (11MB) I had only 45 minutes, so I'm sorry for any software that I left out. I hope to have done a good advocacy for Linux audio for the audience. Best regards, -- .------------------------------------. | Emiliano Grilli - emillo(a)libero.it | '------------------------------------'

22 years, 3 months

Jump to page:

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

2007

2006

2005

2004

2003

2002

Linux-audio-user