Linux-audio-user November 2011

linux-audio-user@lists.linuxaudio.org

84 participants
73 discussions

Re: [LAU] a little web based ear training application

by Tony Austin

> > Date: Sat, 19 Nov 2011 16:47:18 +0200 > From: alexander <axeldenstore(a)gmail.com> > Subject: Re: [LAU] a little web based ear training application > > musictheory.net seems far superior, and it works well with ff/linux > Many thanks, Alex. I'll use this instead. Researching the whys of midi not playing in Firefox etc can wait ;-) Tony

14 years, 2 months

Re: [LAU] Decoding/ripping dolby surround CDs

by Ralf Mardorf

On Sat, 2011-11-19 at 12:00 +0000, linux-audio-user-request(a)lists.linuxaudio.org wrote: > Message: 1 > Date: Fri, 18 Nov 2011 10:36:43 -0500 > From: Rob <lau(a)kudla.org> > Subject: Re: [LAU] Decoding/ripping dolby surround CDs > To: Julien Claassen <julien(a)mail.upb.de> > Cc: linux-audio-user(a)lists.linuxaudio.org > Message-ID: <201111181036.44095.lau(a)kudla.org> > Content-Type: Text/Plain; charset="iso-8859-1" > > On Thursday 17 November 2011 17:28, Julien Claassen wrote: > > My CD is one of the "fake surround" ones. Phase shifting sounds > > likely. But what to do about it. Is there any way, I can split it > up in > > any other format, that would allow me to get something more > sensible > > out of it? > > My memory was that the surround channel was added to one channel > normally > and to the other channel inverted, but the Wikipedia article on Dolby > surround says it's phase-shifted 90 degrees in one and -90 in the > other > (and, apparently, multiplied by sqrt(2)/2). That's why I didn't > mention > specifics in my first post. > > But if you wrote a Csound orchestra to decode DTS noise into stereo, > you > certainly should be able to do it for plain old Dolby surround! > Start > messing with phase and adding channels together, and you ought to get > something useful out of it. > > Rob You reach the point, when I'm unable to resist to reply ;). 1. The German Wiki about this bullshit says, that "Dolby-Surround" "is" compatible to everything, e.g. stereo. It "will" sound as wanted, when played in stereo. http://de.wikipedia.org/wiki/Dolby_Surround 2. ½ of 180° phase shift * (1,41/2) should be ok in stereo :D? That's theory. Anyway, among other jobs I worked as an video and audio engineer for a well known German filmmaker and professor. "Dolby Laboratories" are a mafia. If you make movies using light audio for cord ("celluloid" or equivalent material ;) you'll notice some un-shy wow and flutter. You need to pay a lot of money to use Dolby to avoid this issue, no sane film maker does, excepted of those who are antisocial and take all the money they can get from furtherances. Dolby comes back for more, to cheat people, so they invented all that surround bullshit, that does sound odd. Any "material" encoded by that kinds of "film Dolby" belongs to /dev/0. I experienced Dolby C as a very good procedure for maintained analog homerecording audio equipment, but that's another story. Dolby for audio is the equivalent to Apple and Microsoft for computers. They are robbers. They do some good jobs, but most they do is "business". This CD belongs to the hazardous waste, it's that simple. 2 Cents, YMMV, Ralf

14 years, 2 months

[LAU] Decoding/ripping dolby surround CDs

by Julien Claassen

Hello everyone! I've got a CD, which says, it's mastered for dolby surround. When I ripped it and listened to it, some passages sound very quiet. Is there a way, to rip or encode the tracks to 5.1 or whatever they would be, so I can have a better listening experience? Please don't suggest any GUI-software, since I CAN'T use it. Thank you. Kind regards Julien =-=-=-=-=-=-=-=-=-=-=-=- Such Is Life: Very Intensely Adorable; Free And Jubilating Amazement Revels, Dancing On - FLOWERS! ====== Find my music at ====== http://juliencoder.de/nama/music.html ..................................... "If you live to be 100, I hope I live to be 100 minus 1 day, so I never have to live without you." (Winnie the Pooh)

14 years, 2 months

Re: [LAU] Decoding/ripping dolby surround CDs

by Ralf Mardorf

PPS: On Sat, 2011-11-19 at 12:00 +0000, linux-audio-user-request(a)lists.linuxaudio.org wrote: > My memory was that the surround channel was added to one channel > normally and to the other channel inverted If so, the signal wouldn't be compatible to mono ;), everything would be lost in "2 channels added to mono" and they claim to be backward compatible. Just playing one channel can't work, since they do hard surround effects, so there's the need to add both channels to mono. The whole theory is grotesque. Dolby surround can't sound good, since there's no way to handle all the standards that way.

14 years, 2 months

[LAU] sound devices usbpre2

by alexander

Just got one -_- it works out of the box in usb 1.1.. in theory it should also work in usb 2.0.. or that depends, what is the state of usb2-audio on linux? if it's ok this litle thing should work in some way.. It's a real nice piece of hardware, the smell off quality is allover.. the only bad thing is that -15dB PAD's and phantom power is controlled with dip switches wich aren't really accesible by hand.. So, does anybody know the state of usb2 audio on linux? it's supposed to work in usb2 on newer macs without 'external' drivers... And does anybody know how to set the default soundcard by name rather than a number on archlinux. I've tried this; https://wiki.archlinux.org/index.php/ALSA#Random_Lack_of_Sound_on_Startup but I really can't seem to get it working..

14 years, 2 months

[LAU] small/cheap devices that can run jackd?

by Alessandro Preziosi (licnep)

Does anybody have any idea for a device (smartphone/tablet/netbook/mini-pc...) that could run jackd and thus be used as an effects processor or synth module? I really don't know where to look, but the idea intrigues me. It should probably be something with a usb port, in order to connect midi stuff or an external audio card. Any idea?

14 years, 2 months

[LAU] Decoding a dts-wav.

by S. Massy

Hello, Funny how topics will intersect sometimes (referring to the Dolby thread). Poking around on my drive yesterday, I found some old files someone must have given me claiming to be DTS, but with a wav extension. File, sndinfo, and ffmpeg all claim the files to be 16bit 44100 stereo files, but playing them only results in a burst of noise. Is there a way to transcode these files so that they might become just plain stereo? Looking around brings up ffmpeg as the way to do it, but, as I said earlier, ffmpeg doesn't seem to recognise these files as DTS. Thanks. Cheers, S.M. --

14 years, 2 months

Re: [LAU] RT in Arch Linux

by Ralf Mardorf

For my nVidia GeForce 7200 GS (7300 SE) I'm using nv and nvidia only, since nouveau is a PITA on my machine. - Ralf

14 years, 2 months

[LAU] Reinstalling Ubuntu - Which version ?

by jy

Hi all, I've had a lot of little problems with my ubuntu recently so i decided to get it reinstalled. First I went for the last version but I didn't really like the unity desktop. Had a lot of little annoying things on my laptop such as not being able to set a brightness setting that wouldn't be reset at boot. All in all, i decided to go back to gnome. As I didn't know what older version to chose and as I was pretty pleased with my Lucid, I went back to Lucid; Now my problem is I need a rt or lowlatency kernel (2.6.32 or higher) to be able to set up my laptop properly because I use some pretty original settings to make the best out of my machine. But now I can't find any... :( I looked in abogani's and falktx's ppas but nothing there. So my question is simple, which version of ubuntu should I choose to be able to enjoy a good audio workstation with a corresponding rt or lowlatency kernel ? Second question, if I wanna stick with lucid where can I find the lowlatency or rt kernel (2.6.32 or higher) I'm looking for ? Thanks in advance jy jy

14 years, 2 months

[LAU] Tips for mastering?

by Gabbe Nord

Hello! In a month or so I'll for the first time in my life attempt to master two smaller EPs (my own music should be added). I've worked up a fairly good skillset with some parts of the mastering (multiband compressing etc) but I need some major help with tips for what I'm trying to accomplish, which is: * I want a similar soundlevel throughout the whole of the EP, eg. I want the songs to be similar in strength even if they are dissimilar in dynamics/type of song. Some songs are naturally more "aggressive" and thus will be a bit stronger, but I want the climaxes in the more easy going songs to be as strong. I realise that most of this will be done through the traditional "just listen and compare", but I'm wondering if there are any other analyzingtools that might ease my work a bit? Like analysing RME for the whole song, will that give a fair indication that can be compared amongst songs? Fatigued ears and the need for alot of small breaks is calculated with, but those difficulties will be pretty testing for me I think with my low patience lol, so anything that makes the process easier is good stuff! Mastering on my own like this probably isn't that good, I know, but I'm looking at it as an opportunity to learn some tricks of the trade. I will be using plugins from linuxDSP together with a few Calf ones and the Foo Limiter, so no Jamin etc. Do you have any general tips for me etc? All tips I can get are greatly appreciated! Thanks in advance, regards,

14 years, 2 months

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Linux-audio-user November 2011