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20713 discussions

[linux-audio-user] Re: Syncing muse with ardour

by Dave Phillips

Son of Zev wrote: > (firstly like to apologise to all on multi lists for cross posting but I > don't think this is necessarily just a MusE problem, it could be either > MusE, ardour or alsa and needs to be investigated further from all angles) (I've taken the liberty of transferring the topic to the Linux Audio Users list.) I have also been testing sync scenarios with Ardour (CVS 14 June) + various apps. I've had success only with Hydrogen. I worked with MusE (0.6.0pre5) for a while last night, nothing budged. I *thought* I had all connections designated: Ardour was set up for Send MTC and Send MMC, and MusE was set for external sync, recognizing MTC and MIDI clock. The Ardour sync output is the first virmidi port, so I used kaconnect to route virmidi 0 to MusE. The MusE console reports MMC stop and seek position signals for the Ardour playhead, but no start signal (should it?). Like I said, I got no sync joy. Audio is off in MusE, btw. Maybe I'm missing something obvious ?? Comix mentioned that seq24 would also sync to Ardour, but I couldn't make that happen either. I'm interested in learning about any successful sync arrangements, with or without external gear. What apps work well (or even sort of well) together via MMC, MTC, SMPTE, MIDI clock, or... ?? > I've just done some testing of various scenarios regarding syncing MusE > and Ardour and external devices.. via a MOTU Midi Timepiece AV (as the > code for this is not 100% solid I will redo this test with the intel8x0 > MIDI driver tomorrow at around this time.. it's too late now and I'm > back at work, I can't have the late nights I've been having lately) I have an old MQX32M stuck in a machine running MS-DOS and Sequencer Plus. That board + software generates and reads SMPTE and MTC (I think), I'll try testing it just for fun... Best regards, == dp > Versions > > MusE 0.60 > Ardour beta1a tarball > > (also no xruns were observed in this testing period) > > After some testing I suspect this may either be related to the way these > two softwares handle the virmidi device.. or how alsa handles midi > devices in general, or possibly the way MusE sends MIDI sync message. I > alos gather both from discussion and testing that the MIDI > implementation for sync in Ardour is not complete. > > NOTE: MTC/SMPTE can't be tested reliably on my system as mtpav won't > lock sync with alsa.. but MMC and MIDI clock work well > > Scenario 1 (mtpav/muse) > Syncing MusE to external MIDI device... very succesful, MusE is > responding well to MMC and MIDI clock signal.. moves with transport of > external device, keeps bar sync accurate. > > Scenario 2 (muse/mtpav) > Syncing external device to MusE .. reasonable success.. External device > recognises MIDI start stop, restart.. but external device doesn't sync > with transport movements on MusE > > Scenario 3 (mtpav/ardour) > Syncing Ardour to external MIDI device... moderate success a little > bit flaky at times,. missing a stop signals quite often but generally > working OK. Ardour sees MIDI transport messages including moving bars > forward and back.. > > It seems that the ability to see a stop signal and the ability to follow > the external transport are related (this is hard to describe) If I start > ardour and it can see a stop signal it does so consistently until it is > shut down, in this case it also recognises transport.. > > If it doesn't recognise the stop signal it won't do so until another > restart.. (no change in conditions). There is no way of setting up the > conditions to guarantee that ardour sees or doesn't see the stop and > transport moves.. (also transport moves are not in sync as ardour > doesn't recognise MIDI clock, although this is expecte behaviour as this > has not been implemetned as yet) > > Scenario 4 (ardour/mtpav) > Syncing External device to Ardour.. failed entirely.. a midi message was > seen to be passed through the mtpav but the external sequencer did not > register or understand this message as it had done with MusE. > > Scenario 5 (ardour(virmidi)/muse) > > 1. (external sequencer still was sending MIDI clock on first round of > tests) ....MusE responded unconventionally to messages sent by ardour... > (ardour set as master sending MTC and MMC) MusE would start when the > "go to start" button was pressed.. and stop on stop but only after play > had been pressed on ardour .. it would not start on "play" > > (2nd round external sequencer off) .. Nothing was received by MusE.. > > Scenario 6 (muse(virmidi)/ardour) > Syncing ardour to MusE.. failed.. > Even with all tracks set to broadcast via virmidi.. ardour did not > respond.. > > Scenario 7 > external (mtpav)-> MusE ->(virmidi) ardour.. > MusE would sync to external but ardour would not respond to MusE even > when no mtpav device was specified in a track (but enabled as a port) .. > MusE would still respond to the external device.. > > Scenario 8 > external (mtpav) ->ardour -> MusE > > Scenario 9 > - ardour > external (mtpav) - > - MusE > > setting up both apps to listen to mtpav port 1 (/dev/snd/midiC2D0) > > Success MusE only.. MusE again was responding to the external device > .. ardour did not respond.. > > A question for MusE/Werner... does MusE send received sync signals > through... (the sync options menu seems to indicate this and this is > desirable.. if it can be mapped to specific devices i.e. pass sync in > from mtpav to sync out virmidi, although this option is definitely not > presently apparent) > > So my results. show (with mtpav driver will test with intel8x0 2moro > combination on weekend) that MusE sends and receives sync from external > devices reliably.. Ardour receives MMC sync from external devices with > glitches.. but doesn't send reliably.. > > Neither sends nor receives sync via virmidi driver.. > > Hence the (or maybe my) ideal situation MusE synching with external > sequencer/transport and sending sync to ardour does not > > external --> MusE --> Ardour Failed.. > > I hope this helps.. > > Will send more results soon.. especially as I don't trust the mtpav > driver 100%.. (might install old ens1371 for reliable driver testing) > > cheers > > Allan > > > > On Wed, 2003-06-18 at 09:39, Martin Buechler wrote: > > Hi at muse, > > > > ardour-1.0 will not include a sequencer (AFAIK), and muse seems to be > > (I know, even more than) the complementary part to handle midi related > > recordings/overdubs. I thought, that all I would need is midi machine > > control with ardour as the master, muse as the slave. > > > > What I tried was: Directing ardour's - current is 1.0beta1-c - mmc to > > a virtual midi interface provided by the ALSA snd-virmidi module and > > driving muse as slave accepting mtc/midi clock/mmc with Id 127 and all > > ports.(Hmm, Whats the use of this Id anyway?) Selecting ardour's MTC > > generation seems not to change the behaviour of muse/ardour. Selecting > > the third ardour MIDI option, which is called 'MMC Control' in ardour's > > options panel, crashes ardour instantly! That may be part of the > > problem, I guess... > > > > Additionally, sync generation was turned off in muse. The transport > > grays out, and when I start ardour rolling, muse does exactly nothing. > > But, when I switch off/on the sync button in the transport panel of > > muse, then I am able to control stop/begin/end whithin ardour! Great, > > but it 's quite useless, when muse does not *start* with ardout, isn't it? > > > > Here's some output of muse -mMDs: > > > > ardour: > > ->Goto end > > (another thing: the bar counts seems to be actually not the same in muse > > and ardour) > > -- > > MidiInput: port:1 chan:193 port:1 chan:192 type:0xf0 a=8 b=0 data len 11 > > mmcInput: n:11 06 44 06 01 > > MMC: 156.560000 120238 seek 00:02:36:14:00 > > MidiInput: port:1 chan:193 port:1 chan:192 type:0xf0 a=8 b=0 data len 4 > > mmcInput: n:4 06 01 06 01 > > MMC: STOP > > -- > > ->Goto begin: > > -- > > MidiInput: port:1 chan:122 port:1 chan:121 type:0xf0 a=8 b=0 data len 11 > > mmcInput: n:11 06 44 06 01 > > MMC: 0.000000 0 seek 00:00:00:00:00 > > MidiInput: port:1 chan:122 port:1 chan:121 type:0xf0 a=8 b=0 data len 4 > > mmcInput: n:4 06 01 06 01 > > MMC: STOP > > -- > > > > -> Here I started ardour, but nothing happens.. > > > > Stop: > > -- > > MidiInput: port:1 chan:180 port:1 chan:179 type:0xf0 a=8 b=0 data len 4 > > mmcInput: n:4 06 01 00 00 > > MMC: STOP > > -- > > > > How did you get syncing done, maybe even with ardour? Do I expect too much? > > > > Thanks for reading. > > > > Martin > > > -- > Allan Klinbail <allank(a)labyrinth.net.au> > -- > Son of Zev <sonofzev(a)labyrinth.net.au>

22 years, 8 months

[linux-audio-user] RE: [linux-audio-dev] New form of GPL licence that protects Linux from proprietary world [was: New powermacs?]

by Ivica Bukvic

> -----Original Message----- > From: linux-audio-dev-admin(a)music.columbia.edu [mailto:linux-audio-dev- > admin(a)music.columbia.edu] On Behalf Of Erik de Castro Lopo > Sent: Sunday, June 22, 2003 3:29 AM > To: linux-audio-dev(a)music.columbia.edu > Subject: Re: [linux-audio-dev] New form of GPL licence that protects Linux > from proprietary world [was: New powermacs?] > > On Sat, 21 Jun 2003 22:16:52 -0400 > "Ivica Bukvic" <ico(a)fuse.net> wrote: > > > > I really don't see this as a problem. > > > > Do you mind saying why? > > Well people using libsndfile means that there are less people rolling > their own buggy implementations. This eventually means that libsndfile > has to handle fewer broken files due to someone else's buggy > implementation. > > But th emain reason is that most audio software requires a GUI. Any > program > that is Linux based will have an X11 GUI (at least to start with). On OSX > that GUI will always be slower that the Linux version. On mailing lists > for this software people will be told again and again that the performance > on Linux is better and sooner or later will want to try the real thing. I'll try to respond to many e-mails in one giant swoop :-). So here we go: But this might very soon become a non-issue. This has been a fact so far because G3 and G4 processors blew chunks (contrary to what Apple has been feeding its loyal crowds). G4 1GHz is roughly comparable to a 4-year old PIII 1GHz. However, with the newer chip, if it lives up to its expectations, this will disappear (even if OS X is a resource hog, eventually Apple's CPU's will be able to take it and remain standing on its feet). ---- Many of you have pointed out that limiting GPL would hinder the freedom it stands for. I agree. I never meant to change THE GPL, but rather to create an offspring GPL-like license that had my suggested restrictions. Someone mentioned "if Linux is meant to die, let it die". I completely disagree with this philosophy, because if that happens, and let's say theoretically other Unices go out of business, and we end up being forced to use, for instance OS X, then we would enter the era of indirect monopoly and all that GPL philosophy would not mean squat when we'll still be forced to use proprietary OS/Hw. Dual licensing perhaps is the best option at this moment. I feel very strongly about this since it protects all of our efforts and time investments in Linux. I would also suggest to be careful of the "elitist" talk how Linux' freedom offers less commonly used apps and hence the art of a Linux user is somehow better than of the others. A race car driver is undisputably better driver than I am (at least when it comes to racing, that is), but in order to be better he does not necessarily need to be a better mechanic than I am, right? That being said, I do agree that the tools we use help shape our art and in that way do affect the appearance of our art. I would just warn that not everyone is prepared to roll-up their sleeves hacking stuff, just in order to do a simple cross-fade two soundfiles. After all, how many ways are there to do this operation, regardless whether an app is oss or not? I guess, what I am saying is that I would love to see the LAD community continue to grow because after all the efforts we've made, I believe that _we_ deserve it (not some other proprietary OS), yet that appears not to be the trend (at least not in the academic circles). Ico

22 years, 8 months

[linux-audio-user] Re: [linux-audio-dev] New powermacs?

by cliffw＠easystreet.com

> Hi all, > >[snip - mac news - ] > > Please don't get me wrong. I am still in favor of Linux, obviously due > to its open architecture. But at the same time I am becoming a bit weary > of having to "hack" my advanced audio settings rather than use > user-friendly tools. That, coupled with still anemic direct vendor hw > driver support has really made me pay closer attention on Macs (as scary > as that sounds). Yet, I feel such a sense of accomplishment when my > Linux purrs just right with my desktop being uniquely configured and > tailored to my needs. After all, I am a geek. :-) And the inner struggle > goes on... > > Anyone care to comment or (please) dissuade me from potentially making a > costly mistake? ;-) > Well, i'm messing with a used iBook G3/500 right at the moment. OS X does look nice, and the few OS X audio apps i demo'd are solid. And, dual-booting w/Debian unstable was dead easy to do, i have OSS audio working jest fine with the built-in set, and i'm hoping to do ALSA via USB audio soon, which will be kewl. I like the hardware platform. The display is noticeably better than most Intel laptops, certainly better than the used ones i was comparing to. The Firewire Just Worked, right from the Debian install kernel. I've been using it with a IDE -> firewire disk carrier. The unit is solid. The built-in audio is okay, my model has no real inputs (built-in mic) - you would definately be using USB or firewire for Real Work. Using Open Firmware at boot instead of BIOS is sweet. With Linux, performance is fine, even with the 500mhz chip. The OS X on the other hand, is noticeably slooower than Linux (2.4.21 + 2.5.72 kernels ), especially at reboot. And the Mac world is insanely closed, it actually surprized _me how little choice you have with OS X - near as i can figure, you buy most everything from Apple, pay a bunch more money than a comparable M$ product, or suffer. And since they are _not a huge monopoly, they seem to have little shame about being closed - i was very amused by the way they attempt to corral the first-time user into signing up for .Mac (Apple's version of MSN) during the OS X install, iTunes also. The main thing-that-makes-me-nutbar is the keyboard layout. That's fixable with X, and you can set up keymappings with sysctl for some Mac-specific things. Main installation pain is the Mac version of fdisk, which is....terse. So in conclusion, i'd say the iBook + external converter (USB/fire) would make a fine Linux audio laptop. Get a decent sized disk, and you can dual-boot with OS X, and that will motivate you to run Linux again. :) cliffw (PS - http://www.penguinppc.org - is a good start point for Mac links) > Ivica Ico Bukvic, composer & multimedia sculptor > http://meowing.ccm.uc.edu/~ico > >

22 years, 8 months

[linux-audio-user] Mastering; Rezound, fir filter, digital clipping

by R Parker

Hi, I'm doing a study on audio mastering. Hopefully this letter will generate some correspondance from which I'll learn enough to augment a GFDL licensed document that I've been working on. The test job is an album I recorded several years ago. The source I've decided to use is 16bit 44100 audio CD. I'm restricting the applications I use to jack clients. I guess the process of copying audio and data from CD doesn't introduce any opportunity to compromise the sonic quality of the source. Am I right or wrong? Having opened the songs in Rezound, I've discovered that some of the songs have an inordinate amount of clipping--represented by vertical red lines on the time line. For the purposes of testing this is excellent because they're an opportunity to solve a common problem. The clips cause a series of questions for which I absolutely do not have definitive answers. Is what I am seeing clipping or is there a more accurate term to describe what I'm seeing? Perhaps someone could provide a technical explanation of clipping or a link to a definition. What tools do you use for eliminating clipping that already exists in a source? I don't care at all about preventing the problem. For the moment I am using the Rezound Arbitrary Fir Filter to identify the hz where the clips occur and am performing a decibal cut on the problem range. The interface for this filter enabled me to do some detailed work. Reguardless of how detailed I get, there's an audible consequence to eliminating the clips. I configured a preset with the minimal settings required to eliminate the clips but the result is audibly unacceptable. Another preset eliminates about 80% of the clips and audibly is marginally acceptable if applied to the entire file. What's interesting about this specific set of clips is that they are mostly inaudible. The clipping occurs around 10kHz -> 15kHz and are almost all within the high hat. This causes me to wonder: *how Rezound is configured to conclude that there are clips *should measuring for these types of problems be user configurable or does a technical specification define when a clip occurs *can engineers safely ignore inaudible clips and tell their clients that there's room to fudge and not to worry Is a Fir filter a good tool for addressing the problem of digital clips or is there something better? Are there alternative Fir filter algorithms that produce better results than the one being used in Rezound? I haven't a clue what Rezound uses. Anyway, there's a few of my questions which I realize are probably enough to exhaust anyone's patience. Reguardless, I really would appreciate your thoughts. ron __________________________________ Do you Yahoo!? Yahoo! Calendar - Free online calendar with sync to Outlook(TM). http://calendar.yahoo.com

22 years, 8 months

[linux-audio-user] horgand-1.01

by holborn

Hi! again ... Hi! New Release : horgand 1.01 News in v1.01 (21/06/2003) ------------- -Fixed Bass frequencys, now are tuned :-) -Master Transpose transposes the bass line too. -Master MasterTune tunes the bass line too. -Added more chords to recognition. -Fixed small bugs in split, chords ... REQUERIMENTS: * FAST COMPUTER * LINUX * LIBSNDFILE * ALSA * JACK * FLTK 1.1 Web Page : http://personal.telefonica.terra.es/web/soudfontcombi/ Josep

22 years, 8 months

[linux-audio-user] mplayer and alsa plugins

by Anthony

I've been trying to get mplayer to work with my delta44. I have a working plug pcm type: pcm.dplug { type plug slave.pcm ice1712 } and $ mplayer -ao alsa9:dplug foo.avi will play audio, but no more than a few frames of video. If I look at the verbose output I see; alsa-init: requested format: 48000 Hz, 2 channels, Signed 16-bit (Little-Endian) alsa-init: compiled for ALSA-0.9.4 alsa-init: soundcard set to dplug alsa-init: pcm opend in block-mode alsa-init: chunksize set to 1024 alsa-init: current val=7, fragcount=7 alsa-init: unable to set periods: Invalid argument alsa-init: got buffersize=26212 The number of periods the driver requests is 7 which the code obtains by calling snd_pcm_hw_params_get_periods_max(). So my question is, what should this value be for a plug, should it be the same as the underlying slave. Is the ice1712 not reporting the correct maximum? The maximum jackd will start with is 5 periods so there seems to be something wrong here. --ant

22 years, 8 months

[linux-audio-user] silly midi volume stuff :)

by Ryan Underwood

Hi, I have a MIDI card (Yamaha DB50XG) that I use as a performer for my old Ensoniq controller. It works fine. However, it seems that the Ensoniq keyboard sends the velocity information at only half what it should be -- if I pound on the keyboard, the volume is increased from normal playing, but still rather quiet. If I play a midi file through tse3play or something similar, the volume is full. To get around this problem, I have two sysex files; I cat volume_high.syx > /dev/midi when I want to use the keyboard, and cat volume_low.syx > /dev/midi when I want to play midi files. The sysex's each set the midi master volume to a level which is comfortable to use with either. However, this feels like a kludge. In addition, sometimes annoying things happen like after I've been playing the keyboard at its comfortable volume, I visit a web page with a MIDI on it, and it plays at 250% volume and blasts my ear out. Or I play a game like DOOM which has hardware MIDI support and have to lunge for the volume on my mixer to keep from disturbing the neighbours. :) The keyboard is a Ensoniq SDP-1 from 1986 or so. I tried the volume setting on the keyboard in the hopes that it would modify the volume of the notes sent to the midi card, but it seems to have no effect. (Is it broken possibly?) I was thinking about hacking the mpu401 driver so that when midi data is received externally, it rewrites the velocity somehow before it reaches the midi device. Or if that isnt possible, when a file is played to /dev/midi, after the file sets master volume, reset it to a lower value. Thoughts? Suggestions? This has been annoying me for a while now. :) Thanks, -- Ryan Underwood, <nemesis at icequake.net>, icq=10317253

22 years, 8 months

[linux-audio-user] thanks

by Dan Easley

at the risk of degrading what I'm appreciating - I just wanted to send a note thanking y'all for the great discussions and high signal-to-noise ratio of this group. I've been lurking for three months, waiting till I have the finances to buy equipment to try all this stuff - and sitting on this list has been highly educational. the recent mastering conversation is really diggable. thanks! -- Rev. Dan Easley http://burntpossum.com

22 years, 8 months

[linux-audio-user] how to set otput line level of delta 66 to -10dbv

by rob

Hi, How do I set the ouput line level of my delta 66 to -10dbv? Under windows this can be done using the delta control panel but I can't see any option for this in envy24control nor alsamixer. thanks -- rob <mailingLists(a)pangolin.org.uk>

22 years, 8 months

[linux-audio-user] Audigy 2 and DSP24

by Khadiyd Idris

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 I'm looking for inexpensive soundcard but with high quality... for recording dan monitoring I found two candidates: - - Soundtrack DSP24 (seems hard to find it in local store) - - SB Audigy 2 Can some1 share experience on these two soundcard in linux... regards, khad -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.1 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQE+7sz81MQpYWgG+JsRAis5AJ4kPKgTZJ4MPZ9ePP6GCaUm0/xILACfX4q2 IvUwuMIFf2it+TAYUT76+h0= =6PBD -----END PGP SIGNATURE-----

22 years, 8 months

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