Linux-audio-user

linux-audio-user@lists.linuxaudio.org

3 participants
20662 discussions

by Len Ovens

I have been reading a manual for an AoIP (ravenna) SW sound card. There is a very interesting comparison between a Mac and a win-pc. This is not a special card, just a standard GB ethernet card connected to a Ravenna i/o box (Horus). Windows: 48K = 64 i/o 96k = 32 i/o 192 = 16 i/o 384 = 8 i/o latency: 64 samples - not recomended 128 - ok - but not default 256 -recomended At 192k, smaller buffer sizes are ok, but 64 is minimum (like jack at 32/2) Mac: 64 i/o at all sample rates latency 32/48/64 (defaults to 32) Is this the hw or the os? the mac gui shows if the computer is running ptp or not, but the windows one doesn't. maybe that is the difference. -- Len Ovens www.ovenwerks.net

10 years, 8 months

retuning bristol

by tom haddington

Hey, Everybody-- i loaded bristol with a scala (.scl) file, this morning. That much worked fine. However, both my midi keyboard and the gui keyboard are nowhere near middle C. i've even tuned my midi keyboard up (a maximum) three octaves, and my middle C is still two octaves too low. Can this be prevented or adjusted in anyway? Thanks! bill

10 years, 8 months

Problems with sample rate and recordings (Mackie onyx 1640-i < Firewire > Debian )

by sub

Hei. I am running linux on a Debian machine with kx repositories, connected to a Mackie Onyx 1640-i. Linux kx 3.16.0-4-amd64 #1 SMP Debian 3.16.7-ckt4-3 (2015-02-03) x86_64 GNU/Linux 04:00.0 FireWire (IEEE 1394): Texas Instruments TSB43AB23 IEEE-1394a-2000 Controller (PHY/Link) When i record multitrack audio using Ardour and jackd, i see that the sample frequency is set to 44100. The audio files are also at 44100, according to file: root@kx:/home/humla/akt3bolger/interchange/akt3bolger/audiofiles# file bass-2.wav <head> bass-2.wav: RIFF (little-endian) data, WAVE audio, mono 44100 Hz After doing a mix of the material on a separate machine using Ardour3 at 44100, and dumping the mix internally to a 44100 WAV, i received a mail from the band in which they tell me that the mix is faster and at a higher pitch than the audio they recorded through a video camera at the concert. When i playback audio from the linux machine (like mp3s ) through the firewire and the Onyx console, i get random switches of speed and pitch. I have been working in professional audio, and i know there must be a problem with the sample frequency lock and synch between the two devices, so that one is on the wrong sample frequency, and "translates" the bitstream wrongly. Normally in a digital audio chain you have a machine that is "master" and one that is "slave". The problem here is that the console has no display showing the sample frequency it is locked at, and the Linux machine does not show any master / slave feature in jack or ardour. There is something strange going on here. The machine has also another analog audio card: 00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 02) And i don't know how this could influence the setup.

10 years, 8 months

SPDIF plus NetJack for digital audio transfer between computers.

by Brendan Furneaux

I play keyboard in a band, and use UbuntuStudio on a laptop for softsynths, effects, and most importantly, MIDI routing (via mididings). Across the room is our studio computer, which runs Windows. I am running audio out of my laptop via a Presonus FirePod (aka FP10), which works fine. The studio computer has a Presonus FireStudio and Digimax, which are joined by an ADAT lightpipe. Both the FirePod and FireStudio have SPDIF ports. At the moment, audio is traveling via audio cables from the hardware synths and laptop across the room to the studio computer. However, it seems like I have everything in place to have a "simpler" setup, at least from a wiring and D/A/D conversion standpoint, by using NetJack to send digital audio via a crossover cable from my laptop to the studio computer. The plan would be: *The FireStudio (on the studio computer) must have its clock synced to the Digimax via ADAT. *The FirePod (laptop) can be synced via SPDIF to the FireStudio. Thus, all audio hardware will be on one master clock without any effort from the computers. *Use the FirePod to capture audio from the hardware synths. *Use NetJack(1|2) to route audio from the laptop (both captured from the hardware synths, and from softsynths) to the studio computer, via an Ethernet crossover cable. The last step is where I am running in to trouble. For starters, NetJack(1|2) does not seem to be designed for the use case where the sound cards on two networked computers are actually synced in hardware; thus the normal operating mode where only the master can access its audio hardware. So far, my plan is to use NetJack2, with the laptop as master and the studio computer as slave. I have thought of either using audioadapter with the net backend on the slave, or of using netadapter with the alsa backend. Both of these do resampling to compensate for drifting clocks. My first set of questions is: In the case that the clocks on the master and slave hardware are already synced, do audioadapter and netadapter still spend significant CPU time on resampling overhead? Which one is likely to be more reliable/less resource intensive? Can netadapter receive MIDI? Is there some other software that would be better? I currently have Jack 1.9.10 installed on both computers, and they work fine individually. They are configured with static IPs on the crossover cable, and are at least able to ping each other. However, I have not been able to get NetJack2 to connect using either computer as the master.

10 years, 8 months

new Gxwavescharper.lv2

by Hermann Meyer

Fore those who love heavy distortion plugs :twisted: , I've uploaded a new, UI-less wavescharper lv2 plugin. Get it here: http://sourceforge.net/projects/guitarix/files/lv2/ regards hermann

10 years, 8 months

Off topic - sorry

by Will Godfrey

Is anyone able to post to any of the sourceforge lists? My posts for the last three days (on different groups) seem to have been silently ignored :( Then again, this post will at lest prove whether I can post to any other list :? -- Will J Godfrey http://www.musically.me.uk Say you have a poem and I have a tune. Exchange them and we can both have a poem, a tune, and a song.

10 years, 8 months

Music made with Linux: Wanda & Nova deViator - ARP 339

by Luka Prinčič / Nova deViator

hi all! If some of you remember the crazy bunny from Utrecht's LAC, here we are again. No bunnies this time but more scifi cyberpunk atmosphere. We wrote and released a new album two weeks ago, please have a listen, it's in electro bass, funk & space kind of hybrid of genres. It's free download (name your price), but if you like it you can support by paying an € or two, get a very limited edition USB or a CDr. Heck we even have T-shirts this time. Everything (90%) was written in Renoise on UbuntuStudio without any external plugins. I used Ardour for all the vocals and a microKorg synth in two or three places. I also used some CALF LV2 plugins on vocals. Another piece of hardware was also TC's VocalLive2 effect box. As with our previous album "PACIFICATION", a friend did the final mix and mastering in Logic on MAC. Enjoy and kudos to the whole Linux Audio community! https://kamizdat.bandcamp.com/album/arp-339 https://www.facebook.com/wndvwndv http://emanat.si/en/publishing/wanda--nova-deviator--arp-339/ L. ps: we are available for live gigging in europe if anyone's interested please email us... pps: we'll be shortly looking for remixers. if you are interested (and especialy if you're renoise user, but not obligatory), get in touch... -- Luka Prinčič / Nova deViator // + 386-40-66-77-98 / http://deviator.si / NEW ALBUM OUT NOW! => Wanda & Nova deViator: ARP 339 [DL|CD|USB] http://kamizdat.bandcamp.com/album/arp-339 EVENTS: 06.feb: Wanda & Nova deViator: ARP 339 @ Stolp 3, Maribor 16.feb: Wanda & Nova deViator DJ set @ DubLab, Ch0, Ljubljana 05.mar: Wanda & Nova deViator: ARP 339 @ Rdeče zore/Red Dawns,Ljubljana - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Nova deViator presents Technoburlesque - Image Snatchers EP http://kamizdat.si/releases/image-snatchers-ep (free DL | ltd CDr) - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Wanda & Nova deViator: Pacification (free DL| ltd CDr | ltd USB) http://kamizdat.si/releases/pacification - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Luka Prinčič: Sad Sam Lucky Outtakes (free DL | ltd CDr) http://kamizdat.si/releases/sad-sam-lucky-outtakes - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - SUBSCRIBE: http://nova.deviator.si/follow

10 years, 8 months

New real-time patch available for 3.18

by Jeremy Jongepier

Dear all, For those interested: http://article.gmane.org/gmane.linux.rt.user/12840 Haven't tested it yet myself. Jeremy

10 years, 8 months

ams-lv2 1.1.0

by Aurélien Leblond

Hello all, The version 1.1.0 of ams-lv2 is now available: The two main "features" of this version are: - Ported tons of additional plugins from AMS (VCEnv & VCEnv II, Multiphase LFO, VC Organ, etc.) - Ported the changes from version AMS 2.1.1 (Bit Grinder, Hysteresis, the bug fixes, etc.) In addition, this release sees a lot of bug fixes or optimization. As a reminder, ams-lv2 are plugins to create modular synthesizers ported from Alsa Modular Synth. Here is a demo of an older version of these plugins. http://www.youtube.com/watch?v=LWfF71NerkQ ams-lv2 1.1.0 can be downloaded here: https://github.com/blablack/ams-lv2/releases/tag/v1.1.0 enjoy :) Aurélien

10 years, 8 months

phase inversion plugin

by Chris Bungue

Hi, I'm locking for *a phase inversion plugin.*But I could not find anything. Some ideas? thanks Chris

10 years, 9 months

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Linux-audio-user