Linux-audio-user

linux-audio-user@lists.linuxaudio.org

3 participants
20662 discussions

by Eric Dantan Rzewnicki

I got about half way through an ecasound set up for controlling many of hermes' 52 parameters with midi controllers and noticed the "input gain" control. I was under the impression hermes could run as a stand alone synth. But, I guess the name it bears, "hermes filter", might suggest otherwise. I tried to catch Steve on irc today, but kept missing him. Does anyone know if the input is optional for hermes? If input is required, can I feed it an ecasound null input and still get sounds out of it? I'll use it however it's supposed to work. I just want to understand my options. Thanks, Eric Rz.

21 years, 1 month

[linux-audio-user] Linuxsampler problems

by André Alves Pereira

Hello, I'm having a problem with Linuxsampler. It's compiling ok, but when i try to run it I have the following display: magoo@darkstar:/home/magooslk$ linuxsampler --gig ns_kit7free.gig LinuxSampler 0.2 Copyright (C) 2003, 2004 by Benno Senoner and Christian Schoenebeck Creating Sampler...OK Registered MIDI input drivers: ALSA Registered audio output drivers: ALSA,JACK Starting LSCP network server (on TCP port 8888)...OK LinuxSampler initialization completed. And the program stop. There is no alsa midi connections or jack ports. I'm running Slackware 10 with kernel 2.6.7+voluntary preemption patch, alsa 1.0.6a, jack 0.98.8 and linuxsampler CVS version. I realy thanks for any help. André Magoo PS: Sorry for my very bad english...

21 years, 1 month

[linux-audio-user] Finding similar tracks

by Dylan

Hi All, I'm wondering if there is an app which can scan through audio files to identify ones with similar characteristics to a reference file? A bit like the apps which can identify duplicate images. Cheers Dylan -- "I see your Schwartz is as big as mine" -Dark Helmet

21 years, 1 month

[linux-audio-user] ZynAddSubFX 2.0.0 available

by Paul

Hi. I released ZynAddSubFX software synth todays (standalone linux/windows and VST). For those who don't know about it: zynaddsubfx is a powerful opensource synth with many features (require few pages just to make a list of them ) and the homepage is at http://zynaddsubfx.sourceforge.net News: - Solved some problems regarding VST - added an advanced clipboard/preset module. On each windows/object that support this, will appear 2 buttons "C" for copy and "P" for paste (from clipboard/preset). You can make a collection of waveforms, LFOs, ressonance functions, envelope,etc, and share to others or use as favorites - Completely removed the old format support (you can use the prereleases - bugs removed - others Also a very good news is that it comes with about 250 instruments (from usual organ/strings to the most weird sounds ever heard ) Hope you like it. I have intention to stop coding for a while and to start to write the documentation and make some real good sound examples. Paul __________________________________ Do you Yahoo!? Yahoo! Mail - 50x more storage than other providers! http://promotions.yahoo.com/new_mail

21 years, 1 month

[linux-audio-user] HELP! Trying to get sequencer port recognized

by airplays55＠yahoo.com

I'm trying to get a sequencer like rosegarden working under knoppix 3.4 (a debian flavor linux live CD distro). I am unable to get a midiport like /dev/sequencer to work. knoppix loads the OSS driver by default, and it recognizes the soundcard and I'm able to hear audio waves thru the soundcard, but no midi. I can alternatively boot with ALSA but then I don't even hear audio, so it seems that it may be easier with OSS since I'm halfway there. I'd like to get the external mpu401 midiport working, and also access the onboard FM sounds. I am using an ALS100 soundcard (and can resort to another ESS1869 if I need to). Here is my system info: "lsmod" shows uart401, sound, and soundcore cat /dev/sndstat displays nothing. /etc/modules.conf doesnt seem to have anything relevant (grep didnt find midi or sound anywhere) What is the next step to enable my midiport? I can promptly post back any requested info. Thanks! __________________________________ Do you Yahoo!? Take Yahoo! Mail with you! Get it on your mobile phone. http://mobile.yahoo.com/maildemo

21 years, 1 month

[linux-audio-user] Linux DAW FX box how to for noobs...

by Russell Hanaghan

So after much pondering, I started writing this thing a few hours ago. As I wrote the first paragraph, I figured I'd do it to provide something I could never seem to find....Lot's of simple detail for Noobs! Damn!!! Now I know why no one ever want's to write that basically; there's seventy kajillion things you need to esplain!!! :) Oh well....It's on the rails and headed out of the shed! I belive Mark bellied up as a proof reader and some others...who were they now? I need to put this in front of a few folks to make sure I'm not losing my mind! R~

21 years, 1 month

[linux-audio-user] Output problem SPDIF-related

by Mikhail Ramendik

Hello, It has turned out that the output of 44100 Hz files on my Intel 865 AC97 is only distorted on SPDIF. The analog output is all right! Looks like it's not rate conversion at all, but SPDIF status. I saw something like that in ALSA 1.0.7rc1 changelogs (but can't find these changelogs again; I wonder why even ALSA tarballs don't include changelogs). I am now trying to compile the 2.6.8.1 kernel with alsa 1.0.7 rc1. It may be strange idea, but I'm somewhat reluctant to to go to an -rc kernel as yet. I'll report whether the problem is gone. Yours, Mikhail Ramendik

21 years, 1 month

Re: [linux-audio-user] Converting sample rate: failed...

by davidrclark＠earthlink.net

Hi Erik, Although I did say that sndfile-resample sounded ever so slightly better, I also indicated that it was also ever so slightly less accurate. The sndfile-resample sounded ever so slightly better than either the original or the FFT-overlap resampled version (which sounded identical to each other). I detected almost-imperceptible smoothing. It was very difficult to hear any difference at all, so I think it did a very good job on the voice. I have not attempted to evaluate the clicks and pops wherein one might expect to hear more differences. Best regards, Dave.

21 years, 1 month

Re: [linux-audio-user] Converting sample rate: failed...

by davidrclark＠earthlink.net

Erik, I do not low-pass filter in my resampler, yet it works fine. The reason is that I assume that the input is band-limited, and this is usually true for my own work. Not only is it band-limited, but usually also tapered in the frequency domain, i.e. already effectively low-pass filtered. I use a raised cosine window in the time domain and no window (other than the rectungular truncation "window" for the case of downsampling) in the frequency domain. Effectively I am assuming oversampling in the time domain. I also have filtering capability, but separately from resampling, for cases in which I do have higher frequencies. (However, this is also very crude from a user point of view...) On the presence or absence of higher frequencies: If there is further processing down the road and the higher frequencies are missing, then the results may be inaccurate (for example absent cross-products in the audible region which are not the result of aliasing). Throwing out high frequencies, or merely altering them somehow at every stage is not necessarily advisable, so I caution people who extol the virtues of low-pass filtering. Now in a library resampler, such as yours, I'm sure it's a good idea to enable it... I wouldn't volunteer to answer your email otherwise! Best regards, Dave.

21 years, 1 month

[linux-audio-user] Advice for sox recording options

by Dylan

Hi All, I'm setting up some cron jobs to record radio programmes while I'm on holiday. I've got a basic command: sox -t ossdsp -r 44100 -l -c 2 /dev/dsp test.wav which records IIUC at CD quality (44.1K, 16bit, stereo) from my sound card input. Levels are set independently by aumix. Is this a good set of options? Is there anything else I should consider? Disk space is no particular issue as I have 120Gig available and this seems to use 10MB/minutes - meaning I have close on 200 hours if my calculations are right... Any suggestions welcome! Cheers Dylan -- "I see your Schwartz is as big as mine" -Dark Helmet

21 years, 1 month

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Linux-audio-user