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20662 discussions

On the fly bass downmixing to mono (mpd or alsa)?

by Shani Hadiyanto Pribadi

On 10 February 2014 06:51, Matt Garman <matthew.garman(a)gmail.com> wrote: > Sure, no problem. What I have is: > (1) Linux server with a media collection in a basement network closet > (2) A powered subwoofer on the main floor, with only a single coax > run between the sub and network closet in the basement > (3) In-ceiling speakers on the main floor, all wires terminating > in same network closet Are the in-ceiling speakers connected in pairs? If they are then you need 3 channels, L,R,M. where M = L+R. If you have a soundcard with at least 3 channels and insist on using alsa output then you can use http://alsa.opensrc.org/Low-pass_filter_for_subwoofer_channel_%28HOWTO%29 to upmix from 2 channels to 3 channels in ALSA. (you can ignore the part about low pass). Or you could instead use the jack mpd output plugins and just connect the channels like MPD_out_L -> HW_L -> HW_M MPD_out_R -> HW_R -> HW_M There is also jackminimix for a OSC controlled mixer. I think ecasound can also be used for that purpose. > Note that in this solution, I'm sending the full-range signal to both > the in-ceiling speakers and the sub. The sub has a builtin crossover, > and the speakers can handle the full signal. > > As a side note, if you read the AudioCircle thread above, you'll see I > already have an AVR that can send a bass signal over coax... my goal > is to get rid of the AVR though, as I have more speakers than it has > outputs (would rather not use the AVR and speaker selector), plus I > want to move control off the AVR and onto the Linux server (mpd). Now this is where I lost you, how many speakers do you have exactly, and how many amps for them? Doesn't it mean that you need as many amps for each speakers you have if you ditch the speaker selector? If indeed you want to control it like that then you also need a soundcard with as many output channels as the number of power amps channels for the speakers.

11 years, 9 months

[Fwd: Re: Bitwig at long last...?]

by Ralf Mardorf

-------- Forwarded Message -------- From: Ralf Mardorf <ralf.mardorf(a)alice-dsl.net> To: linux-audio-user <linux-audio-user(a)lists.linuxaudio.org> Subject: Re: [LAU] Bitwig at long last...? Date: Fri, 07 Feb 2014 18:19:21 +0100 Mailer: Evolution 3.10.3 On Fri, 2014-02-07 at 16:54 +0100, Jeremy Jongepier wrote: > On 02/07/2014 04:27 PM, Ralf Mardorf wrote: > > Aaargh, I own a nice single coil Ibanez guitar, but I love to play the > > SG's of friends :). The fingerboard of a SG is close to a classical > > guitar, the mechanics are bad, but the "rest" is amazing. It's my > > favourite guitar, just because I grow up as a musician by imitating > > Jimi, I bought this single coil Ibanez. Today I would buy a SG :). > > As the owner of a 1970 SG I can say that the fingerboard doesn't feel at > all like the one from a classical guitar. Also the mechanics of my SG > are in pretty good shape for a guitar of 44 years old. Just to make > clear that not every SG has the same fingerboard or bad mechanics. And > then I'm not talking about how different they can sound. My SG has P90's > but I've owned one with humbuckers too which sounded completely > different. And then I almost forget the player. Robby Krieger sounds > completely different than say Tony Iommi or Angus Young. > On-topic, I think the same way about DAW's. I consider generalizing a vice. :) No comment ;), no, a comment, I suspect you're aware about what I'm talking about ;). The fingerboard is more like a classical guitar, than a Stratocaster or Stratocaster alike guitar and all SG humbuckers from different ages have a special unique sound _and_ a Schaller M6 Mini or derivative definitively is better than an original (Conclusion or what ever is the name) opened SG mechanic.

11 years, 9 months

ams-lv2 1.0.2 and a tutorial

by Aurélien Leblond

Hello all, Today I just released the version 1.0.2 of the ams-lv2 plugins. ams-lv2 is a port of alsa-modular-synth in the lv2 format to create modular synth primarily with Ingen. Source code and more information available on the website: http://objectivewave.wordpress.com/ams-lv2/ To celebrate this release, I created two videos: The first is a demo of 3 synths created with ams-lv2 and Ingen (a bass, a lead and a pad) soloed and inside a mix: http://www.youtube.com/watch?v=LWfF71NerkQ I created as well this first tutorial on the basics of ams-lv2: http://www.youtube.com/watch?v=IuQZajaSw6M I would as well like to take advantage to thank a lot of people who helped with this project: - David for his patience to answer my 1000+ questions and for all his work on lv2 and Ingen - Robin for creating the sisco.lv2 plugins, they are featured in the demo and they are a great help when creating modular synths - Harry for the dials used in the GUI of ams-lv2 - and finally Fons for creating the great alsa-modular-synth in the first place - the whole Linux Audio community in general I really hope you enjoy these plugins and find them useful somehow! Aurélien

11 years, 9 months

Re: [LAU] ams-lv2 1.0.2 and a tutorial

by Al

CV is different than MIDI. Atte <atte(a)youmail.dk> wrote: >On 02/09/2014 04:31 PM, Paul Davis wrote: > >> How would the VST spec allow for control voltage? >> >> (hint: it won't) > >Not sure what you're talking about. > >AMS when ran standalone is (in my setup) controlled by midi. That's what >I thought might be possible with AMS as VST. But if you say so... > >-- >Atte > >http://atte.dk http://modlys.dk >_______________________________________________ >Linux-audio-user mailing list >Linux-audio-user(a)lists.linuxaudio.org >http://lists.linuxaudio.org/listinfo/linux-audio-user

11 years, 9 months

Pulseaudio and Jack

by Max

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Which of the suggested option is the one people here on the list favour? http://jackaudio.org/pulseaudio_and_jack -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.14 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iEYEARECAAYFAlL1L3UACgkQ3EB7kzgMM6Ln1ACfVyT8RXVcBzHiIkyQJU9LWBWK 4p4Anj08pRcsv5ytIxvtrebWhbkQulGA =JPXo -----END PGP SIGNATURE-----

11 years, 9 months

How is the bass mixed? Per-channel frequency analysis? Histogram?

by Matt Garman

I have a collection of FLAC files, all ripped from my CD collection What I would like to do is run an analysis across all the music to determine how the bass/lower frequencies are generally mixed. For example, how much content below (for example) 150 Hz is on the left channel versus the right channel? I'm not sure if "histogram" is the right word, but in my mind what I'd like to see, per-channel, is something like this: 150--125 Hz: x samples 125--100 Hz: y samples 100--80 Hz: z samples ... Then I can look at the two channels of a song, and if the histograms are approximately the same, I can assume the bass was mixed equally to both channels. I am a programmer, and thought it would be easy to quickly hack something up that would do this, but I have no experience with signal processing, and as I started reading about this, I quickly got in over my head! So I was hoping there might already exist a tool that has this functionality. Note that I don't need any kind of graphical output, as this needs to be wrapped up in some kind of batch processing script---I have about 11,000 files to analyze! The motivation for this is: I have a hardware DAC (digital audio converter) in one part of my house, and a subwoofer in another. There is a single coax run between the DAC and subwoofer, so I can only send one channel. If the overwhelming majority of my music has the bass mixed equally, sending only one channel isn't a problem. But if I choose the "L" channel to send to the sub, and much music has the bass mixed only to the "R" channel, then I won't be able to hear the low frequencies. I want to find out how often this might happen. Thanks, Matt

11 years, 9 months

ams-lv2 1.0.2 and a tutorial

by Aurélien Leblond

>> to create modular synth primarily with Ingen. > > I did not see Ingen run stable on my Fedora or my Kubuntu > installations. Most of the time I was not even able to build and/or to > start the binaries from the repos. > > How is the status: given, you have a recent stable relase of Feoda or > *buntu: does Ingen work for you as, say AMS does? Yes, I'm running the latest SVN in Ubuntu and it works fine for me. I have a Ubuntu repo here with Ingen available: http://objectivewave.wordpress.com/ubuntu-repository/ I get a random crash from time to time - if I have a constant scenario to reproduce I create a bug report for David and I learn not to repeat the same scenario until he fixes the issue... Pretty much the same experience I had with AMS :) I guess if you are not especially using LV2 plugins, there wouldn't be any advantages using ams-lv2/Ingen over AMS. I started this project of porting this ams modules because of a few LV2 plugins I liked using in my synths and AMS doesn't support LV2 (I like having everything in one host as much as I can). Aurélien

11 years, 9 months

OT: Bitwig at long last...?

by Ralf Mardorf

On Sat, 2014-02-08 at 09:39 -1000, david wrote: > On 02/08/2014 04:14 AM, Brett McCoy wrote: > > psshh... I still don't wear earplugs :-P > > So ... you're still in a garage band? ;-) Garages as rehearsal room are seldom in Germany. When I was young I played and today the kids play in world war two NAZI bunkers in Germany. When I was young there were posters in our rehearsal room: "Feind hört mit denk immer dran, vertrau nicht blind dem Nebenmann!" Disgusting, broken translation: "Take care! The enemy is always there and listening, don't trust the person next to you!" but in German it's a rhyme and really funny, in an idiotic kind of way.

11 years, 9 months

Bitwig at long last...?

by Brett McCoy

http://createdigitalmusic.com/2014/01/bitwig-sets-date-heres-youll-get-bitw… No LV2 or LADSPA support on Linux, though, although they say it's planned. At least it supports Jack. -- Brett W. McCoy -- http://www.brettwmccoy.com ------------------------------------------------------------------------ "In the rhythm of music a secret is hidden; If I were to divulge it, it would overturn the world." -- Jelaleddin Rumi

11 years, 9 months

[OT] Phoneblocks, a modular phone

by Carlos sanchiavedraz

Yet another FWIW, interesting and OS-HW project, https://phonebloks.com/en/goals Sorry, this is the last dear folks. I just thought you'd like. Regards -- Carlos sanchiavedraz * Musix GNU+Linux http://www.musix.es

11 years, 9 months

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