Linux-audio-user April 2005

linux-audio-user@lists.linuxaudio.org

163 participants
185 discussions

[linux-audio-user] Re: Riding around the world on an Enfiled (some help required)

by <>ISh

> Hi, > A friend of mine Arun Nangala is planning a huge trip around the world > on his Royal Enfield, he is looking for some bikers who would like > ride with him and give him some company on the way when he is > traveling through the different countries which are given in the map > (text format) attached with this mail (map.doc). He also is looking > for some local sponsorship(or collaboration) in the mentioned > countries from Adventure companies or any other kind of undertakings > who might be interested in this kind of an effort. He is a very nice > photographer you can check out some of his work on the the following > link: > http://www.photoink.net/kumbh.html > you can also contact him on arunnangla(a)hotmail.com, arun(a)photoink.net > > Please do look into this > Thanks > <>Ish > ish(a)sarai.net > (attch : map.doc) > > > He wrote to me : > ________________________________________________________________________ > > As an avid traveler and a photographer, I am about to undertake a > cross-continental expedition on my Royal Enfield motorbike covering 25 > nations in 200 days. I am calling this trip 'Delhi 2 Delhi'. My motive > is to travel, meet people and share the message of peace and > experience the diversity of the people and places. I also plan to > compile the best of my work into a coffee table book and showcase the > same through an exhibition on my return. > > My departure date is set for May 23, 2005 and the expected expense (all > inclusive) is budgeted as $100 per day. This is where I think you > could play > a role in supporting me. You may know of people in companies who I can > forward a letter describing my journey seeking their financial support > and/or sponsorship of expenses such as board and lodging. I would > appreciate > if you could forward me their names and contact details. > > Further, I would be grateful if you could forward this mail to your > friends/ > associates who may be interested to support my trip and me. > > Hope I get a positive response from you. > > Warm regards, > > > Arun Nangla > J4/37B,D.D.A. Flats Kalka ji, New Delhi - 110019 (INDIA) > Mobile: 91 9810972275 > Fax: 91 11 26711774 > e-mail; arunnangla(a)hotmail.com, arun(a)photoink.net > Website: www.photoink.net > > >

20 years, 4 months

[linux-audio-user] Re: preempt or low latency (<>ISh)

by Timo

> From: "<>ISh" <ish(a)sarai.net> > are there any good articles for low latency kernels ... i a m using the > 2.6.8 and i find it pretty good. I am currently using the FC1 2.4.22-1.2188 kernel from Planet CCRMA for productive work. http://ccrma.stanford.edu/planetccrma/software/system.html#kernel. With this kernel my Fedora Core 1 is stable and I get no xruns with jack -n 3 -p 128, about 8 ms latency. -n3 p64 = 4.4 ms and -n3 p32 = 2.18 ms also work, but I get occasional eventhough inaudible xruns every 5 minutes or so. The 2.4.26 kernel on the planet ccrma homepage is not as good, I get occasional xruns also with p128. I am testing FC3 with the 2.6.11-0.3 kernel from Planet CCRMA edge, and this one seems to be performing better, I can get down to -p64 with no xruns and p32 with a lot fewer xruns than with the 2.4.22 kernel. A caveat is that I have not been able to get my el-cheapo http://www.djcj.org/LAU/quicktoots/toots/el-cheapo/ multichannel I/O to work with the 2.6 kernel, whereas it works very well with the 2.4 kernel in FC1. br, Timo

20 years, 4 months

[linux-audio-user] VST reverb "Ambience"

by Russell Hanaghan

Just in case our beloved VST enthusiasts have not seen this one... http://magnus.smartelectronix.com/ This reverb is REALLY nice! Works rock solid on my MDK 10.1 with thac's rpms and jack_fst. Sounds awesome on accoustic guitar and vocals...has lots of usefull working controls and doesn't chew up too much CPU. If it does, there is a CPU option in 3 increments I believe to conserve cycles at a slight but barely noticeable cost to sound quality. Oh.....and it's FREE~~~~~ Cheers, R~

20 years, 4 months

[linux-audio-user] preempt or low latency

by Noah Roberts

The kernel seems to have preemptive patch already in it. Is the low latency patch also needed then? Should you only include one or both?

20 years, 4 months

Re: [linux-audio-user] jack problem

by Georg Holzmann

just some more information: cat /proc/asound/devices says: 0: [0- 0]: ctl 4: [0- 0]: hardware dependent 9: [0- 1]: raw midi 8: [0- 0]: raw midi 16: [0- 0]: digital audio playback 24: [0- 0]: digital audio capture 1: : sequencer 33: : timer lsmod: Module Size Used by snd_seq_oss 31872 0 snd_seq_midi 6944 0 snd_seq_midi_event 6784 2 snd_seq_oss,snd_seq_midi snd_seq 49296 8 snd_seq_oss,snd_seq_midi,snd_seq_midi_event usbkbd 5760 0 radeon 119588 2 parport_pc 34496 1 lp 9260 0 parport 32968 2 parport_pc,lp joydev 7872 0 ov511 94080 0 videodev 7424 1 ov511 v4l2_common 5120 1 ov511 ovcamchip 19464 0 i2c_core 18704 2 ov511,ovcamchip ppp_deflate 4864 0 zlib_deflate 21784 1 ppp_deflate bsd_comp 5632 0 md5 3840 1 ipv6 229764 8 pppoatm 4736 1 ppp_generic 25108 7 ppp_deflate,bsd_comp,pppoatm slhc 6528 1 ppp_generic speedtch 12592 1 atm 33368 4 pppoatm,speedtch autofs4 15748 1 af_packet 16648 0 pcspkr 3432 0 8139too 21504 0 mii 3968 1 8139too orinoco_pci 7424 0 orinoco 43280 1 orinoco_pci hermes 8576 2 orinoco_pci,orinoco intel_agp 18208 1 agpgart 26920 2 intel_agp slamr 376644 0 sg 28832 0 8250 17024 0 serial_core 18688 1 8250 tsdev 5504 0 evdev 7040 1 usbhid 37824 0 usbmouse 4224 0 ehci_hcd 27524 0 ohci_hcd 18692 0 snd_hdsp 48872 0 snd_rawmidi 21796 2 snd_seq_midi,snd_hdsp snd_seq_device 7304 4 snd_seq_oss,snd_seq_midi,snd_seq,snd_rawmidi snd_pcm_oss 48680 0 snd_mixer_oss 17280 1 snd_pcm_oss snd_pcm 82696 2 snd_hdsp,snd_pcm_oss snd_timer 23044 2 snd_seq,snd_pcm snd_page_alloc 9352 2 snd_hdsp,snd_pcm snd_hwdep 8452 1 snd_hdsp snd 49636 12 snd_seq_oss,snd_seq,snd_hdsp,snd_rawmidi,snd_seq_device,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer,snd_hwdep soundcore 7264 1 snd uhci_hcd 28304 0 usbcore 97508 10 usbkbd,ov511,speedtch,usbhid,usbmouse,ehci_hcd,ohci_hcd,uhci_hcd ds 13828 2 yenta_socket 17536 1 pcmcia_core 53700 2 ds,yenta_socket thermal 10384 0 processor 14256 1 thermal fan 3084 0 button 5016 0 battery 7948 1 ac 3596 0 Thanks, LG Georg

20 years, 4 months

[linux-audio-user] [Fwd: [mtg] freesound 'official' opening...]

by Pau Arumi

20 years, 4 months

[linux-audio-user] Delta 1010LT on ebay

by Russell Hanaghan

For anyone looking for a M-Audio Delta 1010LT at a good price... http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=41787&item=731441014… I bought my card from this guy. I don;t know him but I can tell you the product was sold exactly as stated and was with all Driver CD's etc. His rating is showing as "private" but he was a solid seller in my experience. This is about $60 US cheaper than you will find them anywhere else. R~

20 years, 4 months

[linux-audio-user] Re: OT Spam

by Juhana Sadeharju

>From: Kai Vehmanen <kvehmanen(a)eca.cx> > >I used my previous address for +10 years and it is now getting 200-400 >spams a day. Sure I can filter it, but looking for false-positives is just >impossible with this much spam coming in. Have you noticed how experts (like the one who won the Millenium award, Lee something) promotes only filter technologies (because they sell the filtering software)? Filters will not be a solution because the spam still goes through the whole network. The spam is deleted only at the destination. Over 2/3 of the mail traffic is now spam. (And that could be based on mail counts, not on mail sizes. Spams have large attachments.) They should filter at ISP which gives the feed to the spammer. If the ISP receives a mail with 100000 addresses or 100000 mails, then the mails are deleted right at the source. Better would be if the whole mail system would be moved to use p2p technology or a handshaking tech (mailman seems to use some sort of manual handshaking in the subscription procedure). They would not filter the spam but validity of the sender would become verified. I have never understood why somebody should be able to send me a mail anonymously. Juhana -- http://music.columbia.edu/mailman/listinfo/linux-graphics-dev for developers of open source graphics software

20 years, 4 months

[linux-audio-user] Re: [linux-audio-dev] Other real-time options

by Kjetil Svalastog Matheussen

On Fri, 8 Apr 2005, Jean-Marc Valin wrote: > > If someone sets up this forum, and more than twice of us sign > > up, that should show those arrogant lklm-people that there are really > > _a lot_ of us, and that we are strong, and very angry. Hah! > > First, please stop this "arrogant lkml-people" attitude, it won't help. Sorry I put things the wrong way. It wasn't ment to be that seriously... There are some trollish people on lklm though. > Second, I would think that instead of a petition with just lots of names > on it, I would prefer a letter signed by the maintainers of as many > Linux projects as possible, i.e. not signed as "Jean-Marc Valin", but > "Speex maintainer" (Jack maintainer, GnomeMeeting, ...). I'm sure this > would give a lot more weight to the proposition. > Maybe. But Con asked for users. It might looked like he was in doubt whether theres thousands of linux audio users, which there clearly must be by looking at the number of linux-audio-user subscribers. He (and many other kernel-developer) probably already knows that there are many linux audio developers. --

20 years, 4 months

[linux-audio-user] Chionic 1.0.0 Final (Sampler) Released!!

by Juan Linietsky

I have decided to put together a release and free Chionic to the world. Chionic is by far THE most advanced sampler that you can find for GNU/Linux, *BSD, Etc. It is not only extremely powerful, but t has everything configurable via UI. You can obtain the baby here: http://www.reduz.com.ar/chionic/ Lengthy, Lenghty, Insane List of features: 1.2.1 General * OSS and JACK Support (sorry, no time to make ALSA) * Integrated Virtual Keyboard for testing samples and patches (automatically detecting the mode in which you are). * Spectrum display for the output sound. * Voice Counter, so you can always see how many voices is Choinic processing. * Customizable Colors for some widgets. * Customizable keybindings for many widgets * Sliders all show the respective values, and offer small button so you can input a value by yourself, with the range and all presented. * Spinboxes go to top and bottom if you right click on the arrows. * Fully Functional ``Settings'' Menu.. no need to go like.. ``chionic -help'', tweak everything from the UI. 1.2.2 Samples * No, you dont control Samples directly, you have to make instruments. * Up to 1000 samples per bank * Loading of stereo/quadrophonic/whathever samples in as many slots as possible, or just merge into a monophonic sample, all upon import * Supports every single sample format thru libsndfile * Built in extremely complete sample editor with extensible plugins. This sample editor is meant for tweaking everything sample related: 1. Loop Begin/ Loop End. 2. Tuning, Autotuner. 3. Realtime centered zoom, from full view to individual samples using a slider. 4. Play Position Display! It displays the playback pointer INSIDE the sample, for every voice being played. * Sample Looping at any point, plus ping-pong (bidirectional) looping * Samples are stored in 16 bits normalized, then converted to 32bits floating point for mixing (not really any audible quality loss, since it's CD quality). * Samples are stored in a pool and become loaded on demand, when an instrument is using them or you are editing them. They are automatically freed when not using anymore. * If you permorm modifications to a sample in realtime, it will remain in memory until you save it, to avoid any kind of mistake. * Sample management is easy, with an interface full of indicators for the usage/refcount of every single sample. * Extremely fast resampler using selectable (cubic, linear, cosine or raw) interpolation method, which uses fixed point increment sections. You can have over 512 simultaneous voices with very little CPU usage. (yup!) on a 1Gz machine.. * The resampler also performs volume ramping and filtering, so the quality is perfect. * Integrated declicker, which will smooth out samples that dont start or end at DC. The result is a clean sound no matter if the samples have wrong DC. It also declicks samples that are being killed. * Experimental Sample mip-mapping feature.. in a way, it's the best upsampling interpolation you'd ever hear... in other way, it works like shit with looped samples.. as I need to refigure out how to make them.. so It's off by default. 1.2.3 Channels/Buffers/Buses/Sends/Inserts * Integrated Buffer Routing System, for assigning inserts and sends to your mix. * Integrated set of effects and presets for insert (Chorus, Reverb, Stereo FX, Stereo Echo, Band Limiter, 6,8,10,20,30 bands graphical EQs, OA-Pitch Shifter as internal plugins, plus LADSPA is supported too). * Sends can be assigned to midi controllers. * Very Smart algorithm for detecting inactivity of mixing channel buffers, so it can turn off inserts automatically when they are not used, for both internal and LADSPA inserts. * Buffer counter, so you can see how well the previous feature works :) * PANIC!!! button, to turn off all the voices. 1.2.4 Instruments * Unlimited Banks of 128 instruments for Patches * Patches are made by using samples from the pool * When a Patch is loaded, the samples are loaded too * Adjustable Velocity Sensitivity Curve * Pitch/Pan Scale and Center Separation, to be able to make piano-like instruments.. where the bass goes to the left, and treble to the right of the pan. * Inserts PER PATCH. Besides the other inserts, you can make an effect chain with the same internal and LADSPA effects that are bind to a Patch. Also, if you modify any parameter, it will be modified in realtime in all the channels where this Patch has been assigned too. * Up to 4 ``tones'' (sub voices) per Patch, each tone has: 1.2.5 Tones * Velocity Range (from which to which velocity does the tone accept notes) * Sensibility Curve Editing * Note Scaling, Coarse/Fine Tuning, Pan, Start Delay * Filters: Resonant LPF,HPF,BPF,BRF with Frequency Tracking for Cutoff, and Volume->Cutoff Sensibility in both ways. * Widget to edit the filter shape (cutoff/resonance) by just drawing on the Frequency Domain curve. * Randomness factor in all of the above parameters, for a more natural sound. * Freeform Envelopes (just draw a polygon) with Loop and Sustain Loops (which can take any 2 different points, so you can loop with any shape you want). The Display has Auto-Zooming and guides. Envelopes also display a one or more position guides which represent the place the envelopes are being played, in realtime! * LFOs (wich can be sync-ed or not) with sine, saw, square and noise waves, and editable Delay, Rate, Depth and Phase. * Envelopes and LFO for: Volume, Pan, Pitch, Cutoff and Resonance. Use all together if you want. * Sample/Note Table, to assign to EACH note, EACH different sample in the sample pool. * Of course, helper buttons for the above :) so it doesnt take a much time to do. 1.2.6 MIDI * ALSA_seq MIDI Input driver, can open up to FOUR ports, so you achieve 64 input channels. All channels are mapped into the buffers screen, and due to the optimized nature of Chionic, you can use all 64 of them without any slowdown. * Midi Jitter Correction. This means that you dont need to run JACK at low latency in order to avoid Jitter.. even at 16k buffer sizes, the midi sent to Chionic will sound fine, with no jitter. This was achieved using a very clever and complex hack, which shouldnt be there because JACK should support midi in the first place :) * Due to the wonderful nature of Linux, you have to make sure that nothing is stressing the /proc filesystem, or else the above feaure will not work correctly! Dont run any 'top' operations and BE CAREFUL with KSysguardd. Failure to comply with this will result in the midi sensing thread to improperly timestamp incoming events.. heck if I know why. * On the bright side, and if nothing of the sort is being done, you can run jack and chionic even as normal user and it's going to work fine. **************************** Sad News. I'm over with the development of chionic, on it's first release. I have to sadly accept that as much as it works the way I want, I cant communicate my sequencer to chionic in the way I need (because Jackd is too poor to do it the proper way). So in short, anyone who is interested in taking care of chionic for me and continuing development is MORE THAN WELCOME. I will gladly offer assistance on it's development. Also, choinic and it's Core/UI are separated at code level, so if you want to make a GTK app, or port it to Windows, it's not a hard task. Just let me know, so... CHIONIC IS DEAD UNTIL SOMEONE DECIDES TO PICK IT UP AND CONTINUE DEVELOPMENT (or until Jackd matures enough.. yeah right :)

20 years, 4 months

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Linux-audio-user April 2005