Linux-audio-user October 2004

linux-audio-user@lists.linuxaudio.org

153 participants
223 discussions

[linux-audio-user] room based reverb/echo

by Matthew Shanley

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi all, I'm looking for methods in Linux to add reverberation to sounds (not necessarily in real time) using controls based on room size and specifications. I've found some LADSPA plugins that have simple controls - - GVerb, Freeverb, and Stereo reverb - which would work if I can't find anything else. Does anyone know of any options of any sort that provide more complex controls (room dimensions in three directions, damping, placement of source and mic)? Thanks for any advice. matt - -- Matthew Shanley E-mail: mshanley(a)alum.rpi.edu GnuPG Public Key ID: 0x71BB0EC1 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFBbyYDMk//EXG7DsERAhjIAKDWZJvk9+fvaDXKtYJGJ0VfGoDypwCfZ0aR I1hpeVhWYGYmfToNd4o/zjg= =lrMb -----END PGP SIGNATURE-----

20 years, 2 months

[linux-audio-user] Re: es1370 and the el cheapo myth

by Timo Sivula

> From: Clemens Ladisch <clemens(a)ladisch.de> > > timo:~$ aplay -L > > multi { > > ... > > is this as it should be? > > Yes. Does "aplay -D multi something.wav" work? It plays the song through one of the soundcards. I am not sure that if that qualifies as working? Timo

20 years, 2 months

[linux-audio-user] Jack + Alsa routing?

by Juhana Sadeharju

Hello. I'm developing a jack application. The test files are played to the application with aplay and mpg123. How do I route the played audio to my application and then the output to Alsa? Note that aplay plays to the "wave" control in alsamixer. Now my application connects to alsa_pcm:in_1 alsa_pcm:in_2 alsa_pcm:out_1 alsa_pcm:out_2 and it is the same "wave" control. Puzzle: To prevent aplay from going to speakers, I have to turn the "wave" to zero. But then how do I route anything to speakers if my application outputs to the same "wave"? You may freely assume the aplay and mpg123 are not changed in any way. Juhana -- http://music.columbia.edu/mailman/listinfo/linux-graphics-dev for developers of open source graphics software

20 years, 2 months

[linux-audio-user] Re: [OT] recording levels (mismatch)

by Juhana Sadeharju

>From: Erik Steffl <steffl(a)bigfoot.com> > > I am trying to record from a receiver (not sure if that's the right [ ... ] >soundcard expects. Is there anything I can do? do I need some pre-amp or >something? Are you recording the radio programs? What are the levels when you play a CD? Or one of the properly working devices, you listed in your mail, through the receiver: ipod --> VCR in --> tape rec --> live What are the levels then? If you record radio, then you need nothing. Radio has lower amplitude range and all fits to the 14-bit you seem getting in. Non-HiFi video audio is also quite poor. It is totally different problem if the recorded audio plays at too low volume or shows tiny in audio editor. Audio player authors always forget to make the output faders to range above the 0 dB. You need to set the output fader to +12 dB to get normal sound out. This output fader is a software gain: y = gain*x; not a hardware gain. Or you need to increase the volume somewhere else, like some Jack app or an editor plugin. Juhana -- http://music.columbia.edu/mailman/listinfo/linux-graphics-dev for developers of open source graphics software

20 years, 2 months

[linux-audio-user] Re: MIDI In on SB Live! Value

by Juhana Sadeharju

Hello. For LiveDrive one needs to have enable_ir=1 in "/etc/modules.conf" (or equivalent file in other Linuxes). However, backpanel midi port could be a different thing. Juhana -- http://music.columbia.edu/mailman/listinfo/linux-graphics-dev for developers of open source graphics software

20 years, 2 months

[linux-audio-user] Re: Simple ALSA recording?

by Juhana Sadeharju

>From: Mikhail Ramendik <mr(a)ramendik.ru> > >But now I want to use ALSA. Which program can I use to monitor input >levels, and which (possibly different) program can I use for simple, >buffered, preferrably command-line recording? What did you find? I have used years my own Alsashmrec. It uses two processes/threads one for Alsa reading and one for disk writing. A few years ago this was absolutely necessary for skipless recording. You want this feature in the recorder you choose. Alsashmrec computes max values per a disk buffer and prints them like this: Alsashmrec 1.0 Recording format: 16-bit/44100 Hz/Stereo Buffers: A/D + Shared + Disk == 1024 + 2621440 + 163840 bytes 0000000000000000000003646564556767777677787767656856585787757678767787 7677 The print has "x" for the overflow. The screen is eventually filled with the max values. That is good because I can take a break and may still see at what point the overflow occured. Perhaps Alsashmrec should additionally print the time values at the begin of each row. When two programs are used there is danger that you monitor different signal plug than what is being recorded. Juhana -- http://music.columbia.edu/mailman/listinfo/linux-graphics-dev for developers of open source graphics software

20 years, 2 months

[linux-audio-user] syncing cards & jack

by Tom Schouten

hi all, i'm trying to figure out how to synchronize a hammerfall card with a delta1010, and have them both running with jack. (on 2 different machines, or on one machine both running under 1 jack instance) anyone tried this before? the hammerfall has a 9-pin adat-sync port, the delta1010 has 2 wordclock bnc's. the hammerfall has optical digi, the delta1010 has rca. seems they are from different worlds. is this solvable with cabling only? or do i need to buy yet another magic box for this? in realation to this, i am looking for a video i/o card which can sync to this setup. is there anything out there that is not very very expensive? cheers tom

20 years, 2 months

[linux-audio-user] An Aztec 2320 ISA sound card problem

by Ravi Kumar

Hello, I have an Aztec 2320 sound card.It is ISA and not PCI. I have recently installed Fedora core 2 on my machine. I could not get the sound to work, so I checked and found that I have indeed sound support compiled in my kernel (2.6). Then I had visited the alsa-project.org site and according to their suggestion, loaded the aztec 2320 module - snd_azt2320. Now my machine correctly detects the card but when I play a sound file, no sound is heard. I checked that the volume is high by running kmix and alsamixer program. Also earlier I was able to pop an audio CD and play it successfully. But after loading the Aztec module, I am not able to hear that too, though the music is being played. I have included the lines as specified in the alsa-project.org site into the /etc/modules.conf file. The 'lsmod' listing as well as the contents of the '/etc/modules.conf' file has been included below for your viewing. Please tell me where I could have gone wrong. Is it that the details given on the site were for a PCI based card and is different for an ISA based card of the same chipset? I checked for the files - /dev/dsp, /dev/mixer, /dev/sequencer and /dev/midi - but I found that /dev/midi is missing. Could it be because of that too? Sorry for this long email. Thanks in advance Ravi //My machine's lsmod listing is as given below Module Size Used by snd_azt2320 9768 0 snd_opl3_lib 7424 1 snd_azt2320 snd_hwdep 6276 1 snd_opl3_lib snd_cs4231_lib 18948 1 snd_azt2320 snd_pcm 68872 1 snd_cs4231_lib snd_timer 17156 3 snd_opl3_lib,snd_cs4231_lib,snd_pcm snd_page_alloc 7940 2 snd_cs4231_lib,snd_pcm snd_mpu401_uart 4864 1 snd_azt2320 snd_rawmidi 17184 1 snd_mpu401_uart snd_seq_device 6152 2 snd_opl3_lib,snd_rawmidi floppy 47440 0 snd_mixer_oss 13824 0 snd 38372 10 snd_azt2320,snd_opl3_lib,snd_hwdep,snd_cs4231_lib,snd_pcm,snd_timer,snd_mpu401_uart,snd_rawmidi,snd_seq_device,snd_mixer_oss soundcore 6112 1 snd sermouse 3712 0 ipv6 184288 8 parport_pc 19392 1 lp 8236 0 parport 29640 2 parport_pc,lp ipt_REJECT 4736 1 ipt_state 1536 5 ip_conntrack 24968 1 ipt_state iptable_filter 2048 1 ip_tables 13440 3 ipt_REJECT,ipt_state,iptable_filter nls_utf8 1536 1 nls_cp437 5376 1 vfat 10496 1 fat 33472 1 vfat dm_mod 33184 0 uhci_hcd 23708 0 ext3 102376 1 jbd 40216 1 ext3 //Contents of the modules.conf file # ALSA portion alias char-major-116 snd alias snd-card-0 snd-azt2320 # module options should go here # OSS/Free portion alias char-major-14 soundcore alias sound-slot-0 snd-card-0 # card #1 alias sound-service-0-0 snd-mixer-oss alias sound-service-0-1 snd-seq-oss alias sound-service-0-3 snd-pcm-oss alias sound-service-0-8 snd-seq-oss alias sound-service-0-12 snd-pcm-oss -- ---------------------- I hear and I forget, I see and I remember, I DO and I understand. -Confucius-

20 years, 2 months

[linux-audio-user] RE: linux-audio-user Digest, Vol 13, Issue 45

by Alejandro Lopez

Hi Free, Thank you for your comments. >Please try the final 1.2.0, all the tools you mention are there. I'm glad to hear that. As I said, I had no problem after all since I had rawrite2 somewhere anyway, but having this corrected makes Demudi neater. >This is related with the new Debian installer mechanism, AFAIR if you >press the back button you'll be prompted language and keyboard in >different screens. I'll try to address the problem for the next 1.2.1 Actually, you can select language and keyboard in different screens by selecting back just as you describe. Problem is, somehow X will be configured for US layout keyboard anyway if you select Spanish keyboard and English language (kind of strange). Since the computer is always run under X, all I had to do really is to edit /etc/X11/XF86Config-4 (not 100% sure about the path where this file resides) to change the layout from "" to "es". >Translations for the Debian installer are still in progress. Please >please please send any suggestion to debian-boot(a)lists.debian.org, >such contribution is very appreciated. Thanks for pointing to the relevant forum. The thing here is I was scared to read the partition manager in Spanish, but I'm not sure that this is part of the Debian installer? Can you clarify so I can get in touch with the relevant people? I noticed it's a different tool to what it used to be (some fancy flavour of fdisk I think), but I don't know wether it is an application in itself or it is just part of the Debian installer. Whatever it is, if I could get hold of a list of messages (in English) this software has, I'd be happy to translate as accurately as possible and provide the translated list of messages. Especifically, the "finish and write partition table" reads "abort and write partition table" in the Spanish translation, not good. Cheers, Alex _________________________________________________________________ ¿Estás pensando en cambiar de coche? Todas los modelos de serie y extras en MSN Motor. http://motor.msn.es/researchcentre/

20 years, 2 months

[linux-audio-user] Demudi looking good, soundcard advice?

by Alejandro Lopez

Hi, I've received some info from Emiliano (thanks again!) which I think may be useful to other users here (Marc?), so I'm now forwarding it. Cheers, Alex De: Emiliano Grilli <emiliano.grilli(a)poste.it> Responder a: Emiliano Grilli <emiliano.grilli(a)poste.it> Enviado el: jueves, 14 de octubre de 2004 20:49:09 Para: Alejandro Lopez <alex_osiris(a)hotmail.com> Asunto: Re: [linux-audio-user] Demudi looking good, soundcard advice? giovedì, 14 ottobre 2004 alle 13:42:00, Alejandro Lopez ha scritto: >I'm now printing your email so I have your references handy when eventually >browsing or going to the shop. Many thanks Emiliano, that's really useful >information. Thanx ;) And note that these are only my opinions (based on my limited experience, I have an staudio dsp2000 - the only non-working thing is the MIDI in - it is a known bug but still unresolved; it has however 2 working MIDI outs and phantom power on first two audio channels) - I can say that soundcards based on the envy24 chip (all those I listed are) are probably the best entry level "pro" interfaces working good on linux, for doing an additional step you have to go to RME hw, which is more expensive. Consider "consumer grade" soundcards (like soundblasters) only if you do not plan to record from analog input, because the most weak part of these cards is the ADC and the analog circuitry, but they are "honest" for monitoring purposes (eg doing anything inside the pc). For example, if you synthesize a sound with csound, the resulting file will be the same regardless of what soundcard you have, you can even do that *without* any soundcard ;) Also, if you plan to buy a "pro level" card, bear in mind that is very important to feed it with good external audio gear (particularly, a good mixer and good microphones) _________________________________________________________________ Moda para esta temporada. Ponte al día de todas las tendencias. http://www.msn.es/Mujer/moda/default.asp

20 years, 2 months

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Linux-audio-user October 2004