Linux-audio-dev March 2003

linux-audio-dev@lists.linuxaudio.org

88 participants
102 discussions

Re: [linux-audio-dev] Echo Darla/Gina/Layla/... on Linux

by Ranjit Singh

> I am a broadcast engineer by profession, but a hacker by hobby. I maintain > the PostgreSQL RPMset, the nspostgres AOLserver database driver, and do a > little bit of coding. I wouldn't consider myself fluent in C++, however. > But I enjoy learning new things.... Well, that sounds perfect to me; David and Brad have experience of Linux coding, and you have the test and packaging experience. I really want to get into Linux coding, and am quite happy to do the admin and docs as req'd. I think we could both learn some new things :) As you said, David, asm isn't really used, as the goal is portability. It might come in handy once we've got a driver working and we want to improve its latency on a specific platform. (I'm thinking Intel and ARM from my side.) Wrt pages of code per model, I agree with you that hopefully we can get round that, perhaps by having a glue layer to different cards. I don't know, it's been ages since I looked at the code. Have you seen the Echo code, Brad? I'd suggest we make sure we all have a copy, even if we can't post it to a central site, so that we are starting from the same point. We need to classify all the operations that we must provide (the API) and the operations we can build on from the cards. I'd imagine there's a core set.. What do you think? > Odd things like the top jack of a two-jack stack becoming inoperative after > plugging in the bottom plug (in balanced mode). Sounds like you've got a short in there somewhere. Regards, Ranjit.

22 years, 2 months

[linux-audio-dev] RE:linux-audio-dev digest, Vol 1 #401 - 11 msgs

by RichardC＠europlex.ie

Hello linux-audio-dev-request(a)music.columbia.edu I have received your e-mail regarding 'linux-audio-dev digest, Vol 1 #401 - 11 msgs' I will be out of the office until the 24th of March. Please refer any queries that require immediate attention to Phil Carroll @ philc(a)europlex.ie Regards Richard Caldwell

22 years, 2 months

[linux-audio-dev] RE:linux-audio-dev digest, Vol 1 #400 - 12 msgs

by RichardC＠europlex.ie

Hello linux-audio-dev-request(a)music.columbia.edu I have received your e-mail regarding 'linux-audio-dev digest, Vol 1 #400 - 12 msgs' I will be out of the office until the 24th of March. Please refer any queries that require immediate attention to Phil Carroll @ philc(a)europlex.ie Regards Richard Caldwell

22 years, 2 months

[linux-audio-dev] recording, sample rate problem

by Turos Laszlo

Hi I'm trying to write a soundrecorder application under linux. I have Redhat 7.2 with kernel 2.4. Playing sound on my soundcard works fine,but I'm having problems recording. I was using GNOME Sound recorder 1.2.3 to record sound but it seems that it can only record sound at a 48000 Hz sampling rate,but playing back the recorded sound it is a noise. I wrote a little program myself and I reached the same conclusion that I can not set other sampling rate than 48000. My soundcard under Windows records good sound with other sampling rates. I have my soundcard on my VIA motherboard. In my harware Browser looks like this: Manufacturer: VIA Technologies Driver: via82cxxx_audio Can anybody give me a hint? Best regards Laci

22 years, 2 months

[linux-audio-dev] midi 'resolution'

by Lukas Degener

Hi list, maybe someone can explain this to me (me==stupid :-) ) In a system/application, that recieves external midi data of any kind, is there anything one can assume about _when_ some midi data is recieved? i mean, with audio data, you have the buffer size of the dac/adc, which (together with sampling rate) enforces some kind of "global clock" impulse/trigger in your system. Is there anything similar with midi data? Still waiting for enlightenment, Lukas ps: oh and btw, i would like to say another BIG THANK YOU to Frank and Matthias and all the others involved in making the lad conference possible. i had a realy great time there. Hope we can have something like this again in not to far future.

22 years, 2 months

[linux-audio-dev] Resim ( linux-audio-dev )

by Duygu84

22 years, 2 months

Re: [linux-audio-dev] Echo Darla/Gina/Layla/... on Linux

by Ranjit Singh

Sorry not to respond sooner, can't work out the Konqueror history thing= it doesn't even sort by date, for crying out loud.. ;) I downloaded the Event code as well, although not sure where it is on the machines, since I've converted eveything to Linux. Since the code was put out publically, can't we just put it up on a project site (eg sourceforge, freshmeat) as a central resource? >From what I read we have: 2 x20 bit Layla (David Olofson and Lamar Owen) Darla 24 and Gina 20 (Brad Arant) and I have a Darla 20 bit, one of the originals ;) so between us I reckon we have enough hardware to test a generic driver, and also enough code knowledge (from your comments) to get something together. I don't know loads of Intel TBH, my experience is: 6502, Z80, 68000, ARM, and i386+ only in the last year or so. What do you reckon about sorting a project out between us? I don't know loads of Linux module stuff either- Brad and David it sounds like you're the men on that. I have done quite a bit of coding, and would love to try and keep the project on track, since you guys know the setting better. Lamar, since you're on Internet Radio and that, maybe you'd like to do the testing from an engineer's perspective? (ie with stability and throughput as your main goals.) Do you have any coding experience? Let me know what you reckon; it's really cool to hear from other coders who like a nice sound from their boxes! (And don't want to pay M$ for the privilege of using their hardware ;) Regards, Ranjit.

22 years, 2 months

[linux-audio-dev] Re:%20[linux-audio-dev]%20Route%20Stantons%20Final%20Scratch%20to%20internal%20sound%20cards

by Modnogg

I Saw the Scratchamp driver for linus is now opensource. Do you think it's possible now to change the external soundcards in the scratchamp can be replaced in the driver by internal soundcards? grtz, Modnogg

22 years, 2 months

[linux-audio-dev] RE:linux-audio-dev digest, Vol 1 #399 - 8 msgs

by RichardC＠europlex.ie

Hello linux-audio-dev-request(a)music.columbia.edu I have received your e-mail regarding 'linux-audio-dev digest, Vol 1 #399 - 8 msgs' I will be out of the office until the 24th of March. Please refer any queries that require immediate attention to Phil Carroll @ philc(a)europlex.ie Regards Richard Caldwell

22 years, 2 months

Re: [linux-audio-dev] Echo Darla/Gina/Layla/... on Linux

by Ranjit Singh

Hi, I was wondering whether there'd been any progress on this? I have a Darla card, and would love to get it working under Linux. I have experience of assembler (since 1983) if that would be of any help.. Regards, Ranjit.

22 years, 2 months

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Linux-audio-dev March 2003