0
votes
0answers
9 views

How to record sound in buffer using ALSA [migrated]

I'm beginning to learn Linux and ALSA and I was wondering if there is a way to store the sound I record from a microphone directly to the buffer. I read here ...
0
votes
1answer
23 views

Generate .asoundrc

Is there any way to generate .asoundrc? I know that by default this file does not exist and system generates one on the go like Xorg does. But is there any way to see how the content will look like?
0
votes
0answers
15 views

Extremely loud crack and mangled sound over S/PDIF using ALSA

Sometimes it seems ALSA on my machine goes completely haywire: Flash audio on Spotify doesn't produce any sound. Whenever I start a video in VLC it plays an extremely loud crack, so loud I'm afraid ...
1
vote
0answers
32 views

Audio cuts in and out after upgrading from Ubuntu 12.10 -> 13.10

So my audio was working perfectly fine (XBMC, VLC, Flash in Chrome, etc) before the upgrade. Now that I've upgraded, I can still play audio, but it plays for a second or two at a time before cutting ...
2
votes
2answers
44 views

Where do sound drivers live? [closed]

A little while ago I searched for a good driver for my sound card (with surround sound support) and didn't find any. So it seems there is none. I thought I could try (even though I think nothing ...
0
votes
1answer
13 views

Opening ALSA Microphone in two programs?

I'm using a raspberry pi to capture some audio, but I only want it to do it when the noise level goes above a certain level, and then the device will record until two seconds after it falls below that ...
1
vote
0answers
37 views

ALSAEQUAL runs, but sliders do not seem to affect audio

I want to have an equalizer that lets me easily adjust sound for listening to music on my laptop with headphones. I'm trying to install ALSAEQUAL since it seems that this is the preferred tool for ...
2
votes
1answer
35 views

Setting maximum volume

I usually work in a WM (i.e., i3wm) and use alsamixer to adjust sound volume. The recent Linux installation on a Dell t5500 machine gives a very loud sound when set the maximum volume in alsamixer. ...
0
votes
0answers
54 views

Auto-detect headphone jack

I am using ALSA on Arch Linux on a MacBook Air 5,2 (mid 2012). This is my first time using alsa by itself (without any tools that come with gnome), so I may have not configured something in order to ...
5
votes
2answers
240 views

Microphone - static background noise suppression on Linux

My soundcard is Realtek ALC 892. On Windows 7 I use official Realtek drivers, on Linux I use PulseAudio (on Ubuntu 13.10). On both Windows and Linux, when I enable microphone boost +30db (required ...
0
votes
1answer
35 views

Digital audio between Intel Atom E640 and ADAU1445

Background information: I have a ADAU1445 DSP from Analog Devices connected to multiple audio sources through the Serial Input pairs. One of these sources is an Intel Atom E640 processor running ...
3
votes
0answers
113 views

How to set up AMD Cayman/Antilles HDMI Audio (Radeon HD 6900 series)?

I've got an AMD Radeon HD 6950 card: $ lspci | grep AMD 03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cayman PRO [Radeon HD 6950] 03:00.1 Audio device: Advanced Micro ...
2
votes
1answer
219 views

Live noise cancellation of microphone audio with JACK, ALSA, Audacity?

Audacity has a very nice noise cancellation filter. Is it possible, using JACK with ALSA, to pipe live audio through Audacity's noise cancellation filter?
2
votes
0answers
373 views

CentOS 6.5 sound permissions

I am trying to configure ALSA for a CentOS 6.5 minimal install, my problem is non-root users do not have permission to access the sound devices in /dev/snd because the files are missing access control ...
1
vote
1answer
64 views

why has /dev/dsp vanished from SUSE

I used to test my sound settings with the command dd if=/dev/urandom of=/dev/dsp This will play random sound over your default sound device (using OSS). I am using SUSE Linux. Now in the newer ...
0
votes
0answers
102 views

How do I make Wheezy see my sound card?

I'm working on a relatively clean install of Wheezy - relatively as I installed it today and have been installing packages for quite some time. I previously had Ubuntu which played sounds, so it's not ...
0
votes
1answer
240 views

How do I enable sound in this fresh Arch install?

I'm following the Arch Beginner's Guide, here: https://wiki.archlinux.org/index.php/Beginners%27_Guide I have Arch running. Now I'm working on the post-installation instructions, one of the first ...
1
vote
1answer
132 views

GStreamer and sample rate conversion

I have a soundcard that is only partially supported in Alsa, i.e. playback is only working in 48 kHz. Most of my audio files are in 44.1 kHz, and I would like to use Exaile as my audio player, as it ...
2
votes
1answer
62 views

How to use OSLEC with Alsa as default, not with Pulseaudio or other thirdparty package involved?

Oslec Echo canceller I have seen some packages used OSLEC and there echo cancle was very well. So for a test simulation, how could i install the OSLEC only with Alsa (i do not use PulseAudio at all, ...
1
vote
1answer
197 views

Alsa & JACK - card and device names (different naming conventions)

I am a bit confused about audio device names. If I use command aplay -l i get the list of all audio devices on my system: **** List of PLAYBACK Hardware Devices **** card 0: NVidia [HDA NVidia], ...
2
votes
1answer
363 views

Alsa - how can i tell my default audio output is card 2 and device 0, not hdmi?

how can i tell my system default sound output is card 2 and device 0 not card 2 device 3 or 7 or 1? I did this but no sound. $ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: Device ...
0
votes
1answer
162 views

Alsaaudio module, recording for specific amount of time

The below code records the audio for some time (I don't know how much) How to calculate the total time of its recording? For example, if I want to record for just one minute then how would I limit ...
3
votes
0answers
314 views

Why does skype not pick up my microphone?

I've got skype running (32 bit mode) on Slackware64 — the sound is fine but my mic is not able to be detected. KMIX shows that my mic is enabled, and I can hear myself when I test it. Some ...
1
vote
1answer
148 views

Pulseaudio over network - change output on-the-fly

I successfully configured PulseAudio server and client to send audio over network. It uses direct connection: http://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/User/Network/#index1h2 ...
1
vote
1answer
153 views

Separate speakers and headphones output

I have a PC with builtin soundcard, and it has one output for the speakers (behind the computer) and one for the headphones (on the front side). When I play something, the sound goes to both outputs. ...
0
votes
1answer
47 views

What program reads and executes /usr/share/alsa/alsa.conf and related scripts?

I can't find any kind of daemon application for modern ALSA. I wonder, what process or kernel thread reads /usr/share/alsa/alsa.conf and other configuration files under /usr/share/alsa, when it reads ...
1
vote
1answer
2k views

ALSA: how to temporarily change the output device

I want to do a simplest thing possible in ALSA: to have USB-headphones produce sound instead of internal speaker of my tablet. I don't want to change config files such as asound.rc or alsa.conf or ...
1
vote
1answer
345 views

audio recording - record two sources simultaneously, merge into a single 2-track recording

How can I record two audio sources at the same time and create a file where one source is the left channel and the other source is the right channel of a lossless stereo audio recording? My distro ...
1
vote
1answer
147 views

Applications grabing ALSA exlusively

So, my second question about linux audio on the site. The previous one generated quite a lot introductory information. I have ALSA and PulseAudio installed. Before installing PulseAudio, no audio ...
2
votes
1answer
204 views

Alsaequal volume gain, Pre-Amp like

I use alsaequal for equalize my audio, hitherto ok, but all know that after equalizer the volume is low, some equalizers have a control called "Pre-AMP" that solve this problem, but in Alsaequal ...
1
vote
1answer
232 views

How to preserve the logind session in Arch Linux?

I got audio working in Arch Linux without problems yesterday, but at some point it stopped working again: $ alsamixer cannot open mixer: No such file or directory $ vlc foo.mp4 ... [0x7f1388006be8] ...
1
vote
0answers
108 views

Cannot find Audio Hardware for my Workstation

Audio is NOT working in HP workstation xw 4600. I cannot find any hardware present at System-> Preferences -> Sound -> Hardware (Tab) The command lspci -v shows following output of Audio ...
1
vote
0answers
79 views

No microphone input - VIZIO CT15-A5 and 12.04 LTS (64)

I have the VIZIO CT15-A5 and 12.04 LTS (64) is running smoothly .. Only one issue.. I cannot record sound or use Skype due to lack of mic input. I have tried turning up the sound using the alsa ...
1
vote
0answers
278 views

Sound doesn't work in x, but does in virtual terminal

I've just installed Fedora 19, bringing over my home directory. I've disabled graphical boot, instead I get dumped to a virtual terminal. I use xmonad instead of gnome3. weird phenomenon #1 In a ...
2
votes
1answer
1k views

how to pipe audio output to mic input

I've looked all over the internet for a clean way to reroute the audio output of my computer (i.e. what I'd hear from the speaker) to my microphone's input. Possibly, I'd like to do this at low level ...
4
votes
1answer
397 views

ffmpeg - Merge two audio sources with x11grab, possible?

Currently I'm running with the following setup. ffmpeg \ -i http://pub1.di.fm:80/di_vocaltrance \ -f x11grab -s 1920x1080 -r 25 -i :0.0 \ -c:v libx264 -preset fast -pix_fmt yuv420p -s 1280x800 \ ...
4
votes
2answers
200 views

Can I query which processes (if any) are currently accessing the microphone?

I'm running Debian (technically Raspbian), trying to get a Star-Trek style voice-command system. I've got it mostly up and running, but in the interests of privacy and all that jazz, I don't want my ...
2
votes
0answers
50 views

VST plugin integration into ALSA?

I have "headless" (e.g. no graphical front-end) VST plugin that I would like to embed into my ALSA setup to continuously filter my sound. I remember that there used to be a LADSPA plugin which itself ...
2
votes
1answer
622 views

asound.conf file is corrupted does not allow the play with the correct sound card as a result it keeps failing

I have this following asound.conf file, but when i play $ speaker-test it fails. How can you tell asound.conf that each and every time on restart of pc also use this sound card only? "card 2: PCH ...
2
votes
2answers
144 views

Reconfigure line-in as analog-out

I am trying to reconfigure my "line in" as another "analog out" and use it alongside with the default analog out port. I am using an onboard realtek sound card. It is very simple to do this in ...
3
votes
1answer
282 views

How can I find the correct name for my microphone and sound output using aplay or pacmd or something else, to apply in asound.conf?

I need to write a default mic and default speaker output in the asound.conf config file. But I don't know exactly how I can find my external sound card or microphone device's name, so that on reboot ...
5
votes
3answers
668 views

Command line audio player that exits immediately after file finished playing back?

I am experimenting with audio players in the command line, and noticed something weird: if the sound is very short, most players will take up to a second or two after playback has finished, before ...
1
vote
3answers
2k views

Change sampling rate in ALSA

I'm a Computer Audiophile, I've used Windows (with ASIO4ALL)and OSX for Audio. Now I'm making Ubuntu 13 my HTPC/Stereo Audio. To begin with I disabled Pulse audio and using GooMusicplayer with ALSA. ...
1
vote
0answers
182 views

Native Instruments Audio Kontrol 1 - crackling sound

I am very new user to the Linux world. I istalled newest Ubuntu on my old ASUS A7CC laptop. I would like to use also my older external sound interface Native Instruments Audio Kontrol 1. I am able to ...
1
vote
0answers
114 views

Choppy sound with flashpayer

After a number of updates, including upgrading to flashplayer 11 and kernel 3.8.2 sound from flashplayer and skype has become choppy. Setup In my setup I have .ascoundrc set up to use pulseaudio ...
0
votes
2answers
390 views

Unexpectedly lost speaker output. Headphone output works fine

Yesterday when I opened my laptop I noticed that I no longer had sound from the built-in speakers. I carefully checked settings in Sound Preferences, and then dropped to shell and looked in ...
0
votes
0answers
284 views

Microphones not working on Apple macbook Air 1,1 (Early 2008) under Linux

I'm running Linux on an mba. I can't make the microphones (neither external nor internal) work. I test using alsamixer and arecord -Dhw -fdat -vv mic.wav together with aplay -Dhw -vv mic.wav It ...
1
vote
2answers
313 views

Why does Arch Linux keep Windows headphone mute

I have Windows 7 installed, and headphones work perfectly. Few days ago, I installed Arch Linux along with Win7. This issue appears with gnome/xfce4/openbox. Perhaps it is not related to desktop ...
2
votes
0answers
137 views

How to configure buildroot to add a sound device?

I've used a given board configuration to reconfigure it for my individual board. My board has a CS4270 sound device of Cirrus Logic. My uImage is booting successfully on my target hardware, but an ...
14
votes
3answers
3k views

Change PulseAudio Input/Output from Shell?

I have a set of nice wireless headphones which I use from time to time, in addition to my speakers and normal microphone. I'd like to write a script to switch between one input and output source and ...