Linux-audio-user November 2008

linux-audio-user@lists.linuxaudio.org

174 participants
151 discussions

by Florin Andrei

This is an old issue that I have, it goes beyond Linux but it does affect and include this OS. I've a Teac "home theater" amplifier that I bought 7 years ago, complete with 5.1 speakers. With a DVD player (and more recently a PS3) connected to the optical input, the amplifier can do 5.1 audio. When the player is sending 5.1 through the optical link, the Dolby Digital indicator lights up on the amplifier, and I do get all the channels, front, center and back. Movies with 5.1 sound, PS3 games with 5.1, they all use the rear channels correctly and "fill the room" with sound that travels back and forth as the sources move through the stage. All is well. Repeatedly, I tried to replicate this result with the PCs, using different soundcards, different OSes over these years, connected to the digital coaxial input on the amp. Usually what I get from a computer is - when it starts sending the digital carrier (when it boots up), the Dolby ProLogic indicator lights up on the amp, and I get 2.1 sound. The rear channels are mute. Sometimes I get the same result with the DVD player or the PS3 - the ProLogic LED turns on, but that's when the player is sending 2.1 or 2.0 signal over the optical connector, because that's how the source is, which is the correct and desired behavior. But with the PC, once the digital coaxial carrier comes up, it's always ProLogic and 2.1, never Dolby Digital and 5.1 I tried recently with my latest dual-purpose PC: MythTV frontend on Linux, games on Windows. It's a Gigabyte GA-M78SM-S2H motherboard with a Realtek ALC888 sound chip connected over digital coax. http://www.gigabyte.com.tw/Products/Motherboard/Products_Overview.aspx?Prod… Even on Windows, I go into Sound Properties, I set the speakers type to 5.1, then I run the Realtek software to test the speakers, that sends signal into every channel. The rear channels are silent. Can't seem to send 5.1 audio from PC to amp. I remember a number of years ago, when I was using a SoundBlaster Live card on Linux, connected to digital coax, I was doing some experiments with mplayer and I think I was able to turn on the Dolby Digital indicator on the amplifier. I do not remember if it was actually doing 5.1 sound. So there are a few possibilities here: 1. I am really dumb. 2. I just had a long string of bad luck and just used bad sound cards 3. There's something wrong with the amplifier So how do I enable true 5.1 sound connected to the digital coaxial input on the amp? I want to be able to play 5.1 audio tracks in Linux, and play games on Windows with 5.1 sound, the way it works with the PS3. -- Florin Andrei http://florin.myip.org/

16 years, 10 months

Any decent Reaktor/Synthedit-type apps?

by Damon Chaplin

Hi, Are there any decent Reaktor/Synthedit-type apps available for Linux yet? (And easier to use than things like puredata, supercollider or csound.) Damon

16 years, 10 months

frustration - connecting applications

by Josh Lawrence

Hello everyone, Last night, I was successfully able to get a jack midi sequencer, non-sequencer, working with non-jack midi applications using a2jmidid. I was thrilled! That is, right up until I looked at what it took to get this setup going: Start jack, start a2jmidid, start non-sequencer, start whysynth, connect and record, disconnect, start another synth, connect, etc...Throw Hydrogen into the mix, and now I have to set bpm for all applications. If I don't use Hydrogen, then I need to start jack_metro and connect it to jack. Yikes! I know the "one tool for one job" philosophy, so I am perfectly OK with using this many apps. There's just GOT to be a better way (i.e., less time-consuming, more efficient) of connecting these applications. Has anyone encountered this frustration, and have you found a solution? I notice that there are some command-line applications for connecting jack (jack plumbing?), I have a sense that the gui is slowing me down, and maybe scripting all of this might be better; alas, I am horrible at scripting. :) Any and all suggestions would be very, very much appreciated! I'm sooooo close to making this all work... -- Josh Lawrence http://hardbop200.blogspot.com

16 years, 10 months

libgpod with ipod touch

by Patrick Shirkey

Hi, Is anyone here using the ipod touch with libgpod and if yes what is supported? Cheers. -- Patrick Shirkey Boost Hardware Ltd.

16 years, 10 months

Using third-party (commercial or not) .gig files with LinuxSampler

by Rubin

Hi All, Recently I've started playing with LinuxSampler + Fantasia front-end and I'm extremely impressed. I'm currently only using it to record Piano using the excellent free "maestro concert grand v2" .gig that you can download from the LinuxSampler website. I want to create a library of .gig files so I can have more sounds at my disposal and I was wondering about peoples' experiences in using commercial or otherwise third-party .gig files with LinuxSampler; How compatible is LinuxSampler in your experience(s)? Second, I have a rather extensive EXS24 library and I was wondering how doable a conversion of this libraries' sounds to .gig fileformat would be (are there tools to do this, can you do it yourself using smart scripting tricks, etc). Kind regards, Rubin Simons.

16 years, 10 months

Re: [LAU] frustration - connecting applications

by Kjetil S. Matheussen

"Josh Lawrence": > > Hello everyone, > > Last night, I was successfully able to get a jack midi sequencer, > non-sequencer, working with non-jack midi applications using a2jmidid. > I was thrilled! That is, right up until I looked at what it took to > get this setup going: > > Start jack, start a2jmidid, start non-sequencer, start whysynth, > connect and record, disconnect, start another synth, connect, > etc...Throw Hydrogen into the mix, and now I have to set bpm for all > applications. If I don't use Hydrogen, then I need to start > jack_metro and connect it to jack. > > Yikes! > > I know the "one tool for one job" philosophy, so I am perfectly OK > with using this many apps. There's just GOT to be a better way (i.e., > less time-consuming, more efficient) of connecting these applications. > Has anyone encountered this frustration, and have you found a > solution? I notice that there are some command-line applications for > connecting jack (jack plumbing?), I have a sense that the gui is > slowing me down, and maybe scripting all of this might be better; > alas, I am horrible at scripting. :) > > Any and all suggestions would be very, very much appreciated! I'm > sooooo close to making this all work... > I have used jack_snapshot for this: http://tapas.affenbande.org/wordpress/?page_id=14 (I also think the guys at the soundwire group at ccrma have made a similar app.) Another alternative is qjackctl, which has some setting to save connections to an xml file. A third option is using emacs lisp. At least I think someone made emacs bindings to connect jack apps.

16 years, 10 months

Call for Hip Hop tracks

by Patrick Shirkey

Hi, In the course of going through the tracks for my mix of the best of 2008 I have seperated out several types/genres of music. The one that is almost completely missing is real Hiphop. I'm definitely including the Audiobraille session with RadioActive but there are no productions that I can find. Is there no one who has released a Hiphop track this year? Btw, it appears that Ken Restivo has released 42 tracks this past year. Well done!!!! That's more than enough for an album. It's been hard to choose which one/s to include in the mix and I might be unable to listen to syncopated beats again for the next 6 months after yesterdays listening marathon :-) Cheers. -- Patrick Shirkey Boost Hardware Ltd.

16 years, 10 months

"ducking" software

by Josh Lawrence

Hello, A friend of mine just sent me this email. I'm drawing a blank, so I thought I would throw it to the list and see what happens: --[begin email He is hosting a shoutcast server with music he's streaming. He wants to duck his streaming media every 30 seconds and play a prerecorded file from a directory (think hold music with commercials playing every 30 seconds). You have any ideas in mind? Do you know of any software that will do this? --[end email Thanks all, -- Josh Lawrence http://hardbop200.blogspot.com

16 years, 10 months

jackd vs. kernel 2.2.26.6-rt11 vs. ALSA 1.0.18

by Thomas Kuther

Hi all, I experience a problem when trying to stop jackd with this setup * kernel 2.6.26.6-rt11 * alsa-lib/headers/tools/utils 1.0.18 * jackdmp current SVN and/or jack-audio-connection-kit-0.109.x * ICE1712 M-Audio Audiophile I already replaced the in-kernel alsa driver (1.0.16) and compiled alsa-driver 1.0.18 - all running fine. The problem occurs only when I want to stop jackd. ------ ^Cjack main caught signal 2 port deleted: M-Audio-Audiophile-24/96:midi/playback_1 port deleted: M-Audio-Audiophile-24/96:midi/capture_1 ------ .. and there it hangs dmesg says: ------ rawmidi.c:196: rawmidi drain error (avail = 4095, buffer_size = 4096) ------ Now, I cannot kill that jackd process ------- └» killall -9 jackd └» ps -A|grep jackd 7060 pts/0 00:00:00 jackd ------- Still there... therefor I also cannot shutdown the system cleanly. Only sysrq+reisub I do not know if that is a bug in the kernel or in alsa-lib. I don't think it's jackdmp, as I also tried "old" jackd, and two versions of alsa-driver, so that shouldn't be the cause either. Any ideas or similar issues? Thanks, Thomas

16 years, 10 months

compiling ingen

by Shani Hadiyanto Pribadi

Hello. I downloaded rev 1713 from http://svn.drobilla.net/lad/trunk/ I run ./waf configure --prefix=/usr/local and then run ./waf -j2 but then it shows error like this [ 28/287] cc: slv2/hosts/lv2_simple_jack_host.c -> build/default/slv2/hosts/lv2_simple_jack_host_6.o In file included from ../slv2/hosts/lv2_jack_host.c:29: ../slv2/hosts/lv2_uri_map.h:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before '.' token In file included from ../slv2/hosts/lv2_jack_host.c:29: ../slv2/hosts/lv2_uri_map.h:1:41: warning: no newline at end of file In file included from ../slv2/hosts/lv2_jack_host.c:30: ../slv2/hosts/lv2_event.h:1:37: warning: no newline at end of file In file included from ../slv2/hosts/lv2_jack_host.c:31: ../slv2/hosts/lv2_event_helpers.h:1:45: warning: no newline at end of file ../slv2/hosts/lv2_jack_host.c:49: error: field 'direction' has incomplete type ../slv2/hosts/lv2_jack_host.c:53: error: expected specifier-qualifier-list before 'LV2_Event_Buffer' ../slv2/hosts/lv2_jack_host.c:76: error: expected ')' before 'callback_data' ../slv2/hosts/lv2_jack_host.c:86: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'uri_map' ../slv2/hosts/lv2_jack_host.c:87: error: 'uri_map' undeclared here (not in a function) ../slv2/hosts/lv2_jack_host.c:91: error: expected ')' before 'callback_data' ../slv2/hosts/lv2_jack_host.c:97: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'event_ref' ../slv2/hosts/lv2_jack_host.c:99: error: 'event_ref' undeclared here (not in a function) ../slv2/hosts/lv2_jack_host.c: In function 'main': ../slv2/hosts/lv2_jack_host.c:218: error: 'struct Port' has no member named 'ev_buffer' ../slv2/hosts/lv2_jack_host.c:219: error: 'struct Port' has no member named 'ev_buffer' ../slv2/hosts/lv2_jack_host.c: In function 'create_port': ../slv2/hosts/lv2_jack_host.c:269: error: 'struct Port' has no member named 'ev_buffer' ../slv2/hosts/lv2_jack_host.c:280: error: 'INPUT' undeclared (first use in this function) ../slv2/hosts/lv2_jack_host.c:280: error: (Each undeclared identifier is reported only once ../slv2/hosts/lv2_jack_host.c:280: error: for each function it appears in.) ../slv2/hosts/lv2_jack_host.c:283: error: 'OUTPUT' undeclared (first use in this function) ../slv2/hosts/lv2_jack_host.c:313: error: 'struct Port' has no member named 'ev_buffer' ../slv2/hosts/lv2_jack_host.c:313: warning: implicit declaration of function 'lv2_event_buffer_new' ../slv2/hosts/lv2_jack_host.c:313: error: 'LV2_EVENT_AUDIO_STAMP' undeclared (first use in this function) ../slv2/hosts/lv2_jack_host.c:314: error: 'struct Port' has no member named 'ev_buffer' ../slv2/hosts/lv2_jack_host.c: In function 'jack_process_cb': ../slv2/hosts/lv2_jack_host.c:342: warning: implicit declaration of function 'lv2_event_buffer_reset' ../slv2/hosts/lv2_jack_host.c:342: error: 'struct Port' has no member named 'ev_buffer' ../slv2/hosts/lv2_jack_host.c:342: error: 'LV2_EVENT_AUDIO_STAMP' undeclared (first use in this function) ../slv2/hosts/lv2_jack_host.c:342: error: 'struct Port' has no member named 'ev_buffer' ../slv2/hosts/lv2_jack_host.c:344: error: 'INPUT' undeclared (first use in this function) ../slv2/hosts/lv2_jack_host.c:347: error: 'LV2_Event_Iterator' undeclared (first use in this function) ../slv2/hosts/lv2_jack_host.c:347: error: expected ';' before 'iter' ../slv2/hosts/lv2_jack_host.c:348: warning: implicit declaration of function 'lv2_event_begin' ../slv2/hosts/lv2_jack_host.c:348: error: 'iter' undeclared (first use in this function) ../slv2/hosts/lv2_jack_host.c:348: error: 'struct Port' has no member named 'ev_buffer' ../slv2/hosts/lv2_jack_host.c:357: warning: implicit declaration of function 'lv2_event_write' ../slv2/hosts/lv2_jack_host.c:378: error: expected ';' before 'iter' ../slv2/hosts/lv2_jack_host.c:379: error: 'struct Port' has no member named 'ev_buffer' ../slv2/hosts/lv2_jack_host.c:385: error: 'LV2_Event' undeclared (first use in this function) ../slv2/hosts/lv2_jack_host.c:385: error: 'ev' undeclared (first use in this function) ../slv2/hosts/lv2_jack_host.c:385: warning: implicit declaration of function 'lv2_event_get' ../slv2/hosts/lv2_jack_host.c:395: warning: implicit declaration of function 'lv2_event_increment' Build failed -> task failed (err #129): [bld:///home/shani/Sources/svn/drobilla/svn.drobilla.net/lad/trunk/slv2/host…] Is there anything wrong?

16 years, 10 months

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Linux-audio-user November 2008