Linux-audio-user May 2006

linux-audio-user@lists.linuxaudio.org

184 participants
187 discussions

Re: [linux-audio-user] Miscellaneous hardware/software questions

by Gabriel Brachtel

>>>it's easy for non-programing people to bring "visions" regarding >>>interface design. (and i love do so :) as i know programers, it's quite >>>hard to establish a new standard. but imho the interface standards >>>(buttons, dropdown boxes, scrolling, menu-structure, etc.) are now a >>>couple of years old, and there might be better solutions for specific >>>tasks. audio seems to me like a good point to start. > > > i wasn't talking about such rudimentary stuff. of course there are > alternatives to these basic widgets and several audio applications (even > free ones) have begun to support them. > > the point about a visual interface is that it acts as a "memory buffer" > for the user: you do not have to remember much about the structure of > the session because the structure is made visible on the screen. can't > remember precisely where you put a certain sound? how many copies of the > bridge riff did i put in? is the door slam before or after the creak? > its all there on the screen, just waiting for you to look at it. > > as soon as you move away from a visual UI, you have to find some way to > avoid requiring the user to remember everything about the session. when i try to remember a poem my brain creates images and i walk trough them, when i reproduce it. when i learn a piece of music it does other stuff (i'm a pianist and singer) but in the end i have a very complex thing in my mind, just think of a bach fugue. i have the fugue also in "the fingers". different areas of the brain work together. i have the same oppinion as you, we are very good in using a visual UI. we trained it for a long time. but there could be other combinations that work nearly as good as "mouse-to-eye". > the visual interface offers another hard-to-replicate feature as well: > trivially variable precision. if you try doing cut-n-paste based only on > audio feedback, you will find it quite hard/laborious to be as precise > as you might want to be. with the visual interface, its much easier to > use visual information to get the rough location of an edit and then > get to precisely where you want, without many steps. with audio feedback > based approaches, i think you will find yourself needing many more > iterations through the edit-play-edit-play cycle before you get the > location correct. i think it's all a matter of training. you do the "display-keyboard-mouse-combination" for long years and you became professional in speed and precision. watch a pro-gamer gaming with mouse.. what's about data-gloves? whats with feet-controlers and other "non-standard" devices? greets, gabriel (sorry for my clumsy english)

17 years, 10 months

[linux-audio-user] Miscellaneous hardware/software questions

by Jason White

I am looking for suitable hardware to handle digital i/o between a Linux system and an RME ADI-2 ad/da converter that I just bought. I don't need lots of channels, but reliability of the data transfer is important, including jitter reduction. An RME card would be excellent but it is somewhat outside my budget. Also, connectivity to a laptop would be desirable, suggesting either a USB interface or waiting until http://freebob.sourceforge.net/ (the Alsa firewire project) matures. I don't plan to run any OS besides Linux with this hardware, so Alsa support is crucial. As this is for home/personal use I'm not in a hurry. M-Audio hardware is high on my list of possibilities at the moment. Now to the software question: does there exist any sound editor with a non-graphical interface, i.e., one that can be operated from the Linux console for inserting, deleting, copying and otherwise editing audio? Due to a vision-related disability I can't use a graphical display and therefore need a text-only solution - but all the sound editors appear to require X11. Surely it should be possible to design an audio interface to a digital sound editor. Suggestions welcome. I've discussed hardware on this list once before, and the USB options weren't highly regarded at the time.

17 years, 10 months

[linux-audio-user] hello gentoo? speed up please...

by Aaron Trumm

hello all - got a question - I've only recently been stopping and taking a look at my studio computer's performance and in the almost year since I change from Red Hat 9 to gentoo, it's been more solid on some things, but I notice a huge latency difference - ie: I have to run Jack at -p 8192 to get anything done in Ardour Anybody have any tips on what to look at to tweak it? Seems like it should do better than that... I didn't see it as a problem until in the last few days I started playing with playing softsynths live directly into Ardour - you've gotta be running at -p 1024 or there's a latency that screws up your playing - at 8192 it's a downright 8th note delay... Here's some vitals that I can think of: OS: gentoo 2.6.6-rc1 kernel (alsa built in) jack: 0.99.0 ardour: beta28 jack command line: jackd -R -d alsa -d hw:0 -r 48000 -p 8192 <------- (or whatever) harddrive: multicount on io support: 32 bit unmaskirq on use dma on keepsettings off readonly off readahead on chip: 2ghz amd (I THINK - not at computer now) ram: 512MB thanks for any ideas! :) --------------------- Aaron Trumm www.nquit.com -----------------------

18 years

[linux-audio-user] [ANN] fst-1.8 (give those vsts a lashing)

by torbenh＠gmx.de

hi all... this is fst-1.8. loads vst instruments... and makes them a jack client. you need to have lash installed to build it. download is at: http://galan.sf.net/fst-1.8.tar.gz webpage is at: http://www.joebutton.co.uk/fst *** IMPORTANT *** there seems to be a "BUG" in wine, which prevents simultaneous startup of fst instances. (this happens on lash project restore) to circumvent this you need to have a persistent wineserver running. so just start "wineserver -p" before reloading a lash project. i hope to be able to fine a better workaround soon. So expect this in fst-1.8.1 which will also have complete vst state restore. currently only the parameters are restored. But this is a good start. please report back on wine version usage... and yes... many vsts NEED a lashing ;) -- torben Hohn http://galan.sourceforge.net -- The graphical Audio language

18 years, 5 months

[linux-audio-user] Low latency with 2.6.16.16 vanilla

by Wolfgang Woehl

Hi, I want to try what Lee mentioned a couple of times recently: Low latency audio performance with 2.6 mainline -- no mingo-patch, no rt-lsm (athlon xp 2600+, asus a7v8x-x, hdsp. On a 2.4.26 with lck patches this system has good lowlat performance, solid jackd with -p 64 -n 2, so the hardware should be ok. Ah well, looong dropouts on deep reiserfs walks that never show up in jackd's messages but that's hopefully another story). Got 2.6.16.16 from kernel.org. If I understood Lee right I could expect a jackd with -p 64 -n 2 to work just fine but it doesn't. Loads of xruns. What am I missing? What can I do to find out? With make oldconfig I come across some questions I'm unsure about. Are these answers right? Thanks in advance. # IO Schedulers # CONFIG_IOSCHED_NOOP=y CONFIG_IOSCHED_AS=y CONFIG_IOSCHED_DEADLINE=y CONFIG_IOSCHED_CFQ=y CONFIG_DEFAULT_AS=y # CONFIG_DEFAULT_DEADLINE is not set # CONFIG_DEFAULT_CFQ is not set # CONFIG_DEFAULT_NOOP is not set CONFIG_DEFAULT_IOSCHED="anticipatory" --- # Processor type and features # # CONFIG_HPET_TIMER is not set # CONFIG_SMP is not set # CONFIG_PREEMPT_NONE is not set # CONFIG_PREEMPT_VOLUNTARY is not set CONFIG_PREEMPT=y CONFIG_PREEMPT_BKL=y --- # Firmware Drivers # # CONFIG_HZ_100 is not set # CONFIG_HZ_250 is not set CONFIG_HZ_1000=y CONFIG_HZ=1000 --- CONFIG_SND_RTCTIMER=m CONFIG_SND_SEQ_RTCTIMER_DEFAULT=y -- Wolfgang

18 years, 5 months

[linux-audio-user] Link: Extremely high quality free music

by Carlo Capocasa

For all of you who have been waiting for some amazing sounds that are high quality music first and libre second, I have found just that here: http://www.chillheimer.com Some of these sounds simply brought me to other places... they even have a song called 'Mind Travel'. I can't say exactly in what way but listening to the stuff is enlightening. Ambient, Jungle, Deep house genres and a lot of blending a few completely new styles, 61 tunes. Carlo

18 years, 5 months

[linux-audio-user] Re: [linux-audio-dev] Re: [ANN] No More Specimen

by Paul Winkler

I can understand not wanting to maintain it any more, but where'd the download go?? http://gazuga.net/files --> 404 -- Paul Winkler http://www.slinkp.com

18 years, 5 months

[linux-audio-user] listening to livestream of german radio

by Julien Claassen

Hi all! I tried to listen to the livestreams of dlf and dradiokultur www.dradio.de They have a new - no two new - oggstreams. I tried play9ing them with mplayer/ogg123 and mpg123 respectively, but it didn't work Has anyone tried the following stream: http://dradio-live.ogg.t-bn.de/dlf_high.ogg Frank Barknecht: Do you know anything about this? 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

18 years, 5 months

[linux-audio-user] linuxsampler dapper packages

by francisco echeverria

hi all i'm trying to load some stuff on qsampler but when i setup the audio/output it looks like my soundcard is not there (not midi nor audio options avialable) when i try the same with jack running the only option for audio is alsa below are the messages when first i try to create midi devices then audio devices and finally try to load some .gig is there something i can do ?? thanks in advance... 02:50:07.015 Client connecting... 02:50:07.018 Client receive timeout is set to 1000 msec. 02:50:07.020 Client connected. 02:50:07.021 New session: "Untitled1". 02:50:21.147 New Channel setup... 02:50:34.320 New MIDI device lscp_create_midi_device: Error opening ALSA sequencer (errno=0) 02:50:34.321 New MIDI device Could not create device. Sorry. 02:50:43.797 New Audio device lscp_get_audio_driver_info: AudioOutputDeviceAlsa (errno=0) 02:50:45.354 New Audio device lscp_create_audio_device: AudioOutputDeviceAlsa (errno=0) 02:50:45.358 New Audio device Could not create device. Sorry. 02:50:59.746 Channel 0 added. 02:50:59.751 Channel 0 lscp_set_channel_audio_type: AudioOutputDeviceAlsa (errno=0) 02:50:59.756 Channel 0 lscp_set_channel_midi_type: Error opening ALSA sequencer (errno=0) 02:50:59.763 Channel 0 lscp_set_channel_midi_port: No MIDI input device assigned. (errno=0) 02:50:59.765 Channel 0 lscp_set_channel_midi_channel: No MIDI input device assigned. (errno=0) 02:50:59.769 Channel 0 Engine: GIG. 02:50:59.772 Channel 0 lscp_load_instrument: No audio output device connected to sampler channel (errno=0) 02:50:59.774 Channel 0 Some channel settings could not be set. Sorry. 02:51:01.739 Channel 0 lscp_get_audio_device_info: ENGINE_NAME (errno=0) 02:51:01.742 Channel 0 lscp_get_midi_device_info: ENGINE_NAME (errno=0) etc......

18 years, 5 months

[linux-audio-user] FC5 and Flash Audio

by Brad Fuller

I've upgraded to FC5, and I'm slowly inching my way up to get audio working (PlanetCCRMA). I have a particular problem in that Flash video works fine, but I have no audio (occurs in Firefox, Opera and Konqueror.) I've searched for a solution and really haven't found anything that works. Some reports have said that a chmod to /dev/dsp of 0666 will help. Others say that changing the permissions on the "plugins" directory will do the trick. Nope, not for me. I noticed that I had no /dev/dsp. So, I kinda figured that maybe the Flash plugin hard defaults to writing to /dev/dsp. So I made one with ./MAKEDEV audio... and sure enough, a dsp1 was made. However, I still have no audio when playing flash in a browser. Anyone come across this problem? Any ideas? brad -- Brad Fuller Sonaural Audio Studio <http://www.oreillynet.com/pub/au/2184>

18 years, 5 months

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Linux-audio-user May 2006