Questions about audio hardware and software in Linux and other UNIX operating systems.

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48 views

Pulseaudio consuming ~1% CPU when sound is idle

How comes that Pulseaudio is consuming ~1% CPU when the sound is idle. I mean there is no sound. Even if I additionally mute it. I'm on Mint 17.2. top
1
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2answers
463 views

How do I disable the system beep in FreeBSD 10.1?

How do I disable the system beep on the console in FreeBSD 10.1? The recommended commands don't work. The sysctl setting: # sysctl hw.syscons.bell=0 hw.syscons.bell: 1 -> 0 # sysctl -a | grep ...
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1answer
221 views

Many audio devices with same name: how to use them in asound.conf?

I'd like to create a new PCM device in ALSA, thanks to these ALSA PCM plugins in /etc/asound.conf: pcm.blah { type rate slave { pcm <device1> rate 48000 } } But what name to use ...
3
votes
1answer
610 views

Internal microphone not working.. again (Fedora 20, KDE, HP 8460p)

Unfortunately I have yet another "adventure" with my internal microphone. Everything is un-muted in alsamixer, as well as in pavucontrol. It is not the first time it stopped working, but now - for ...
1
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1answer
88 views

Sound stutters during moderate disk access?

I'm running Xubuntu 13.10 "Saucy Salamander." It's a pretty recent install. I'm playing music over a bluetooth usb dongle on a home theater system. All of my sound goes through pulseaudio. I've ...
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1answer
36 views

Messed audio settings, now i have no sound

I was trying to configure sound and while changing settings, specifically controllers, i messed it and now i have no sound. However, when i use the command speaker-test -Dplug:front -c2 -l5 -twav it ...
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1answer
58 views

abcde ripping to wav

I am trying to find out configuration for abcde to extract a cd to wav. I am using mp3 config file from http://www.andrews-corner.org/abcde.html but I dont know what the wav encoder or abcde configs ...
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0answers
48 views

Pulse audio: how to disable an output channel?

My computer is connected to my receiver, and I don't want to play nothing to it through Pulse Audio. How do I disable these channels? I want to disable the "HDMI / DisplayPort2" and the "Digital ...
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0answers
19 views

Audio mute on program startup - Fedora 21, Xfce4

when i start Terminator terminal emulator the audio mutes. Did somebody run to similar problem? I don't even know what to look for; so any hints would be appreciated. I run Fedora 21 with Xfce4
13
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4answers
4k views

Audio-only youtube player

I would like to find an application external to the internet browser that would play only youtube sound. Preferably a very light one, CLI or GUI.
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0answers
41 views

Can't start Jack as simple user

I'm trying for weeks to create an evoluted webradio based on Jack (Pulseaudio sucks for what we need). Jack is running well when I run it as root and jack_lsp is well returning what i'm looking for. ...
8
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1answer
11k views

How do I configure PulseAudio for 7.1 Surround Sound over HDMI?

I have my machine connected over HDMI to a receiver. But when I try to use more than two channels with PulseAudio, I only get two. pacmd list cards shows the card, but does not show an HDMI profile ...
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0answers
30 views

possible to adjust volume on my laptop up or down without having to log in?

Is there any way to adjust the output volume of my speakers with the physical buttons on the keyboard without having to log in ? If my screen is locked and an annoying song starts to play, I need ...
0
votes
1answer
118 views

How to merge two microphone inputs into a single virtual microphone in realtime?

If I connect two microphones to my computer, how would I merge it in to a single virtual microphone. I want the person I am calling on Skype to hear both microphone inputs, preferably only using ...
1
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0answers
286 views

Only dummy output available for audio on linux

Ok so, I have Linux Mint 17.2 Cinnamon installed. But I installed also xfce4 and openbox and am using xfce4 desktop environment with openbox. At first, I had few issues with audio volume control and ...
2
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1answer
487 views

Focusrite Scarlett on Linux input mapping?

Does anyone use these interfaces on Linux? If so, how do the inputs map (e. g. with ALSA/PulseAudio)? E. g. the Scarlett 6i6 has the following connections. Inputs: 2x symmetric XLR inputs (one for ...
0
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1answer
44 views

Audio converter / transcoder

I've been trying to search around for a audio transcoder for linux where i can set specific presets, maybe batch transcode say a wav file into diffrently converted mp3 files (using diffrent ...
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2answers
452 views

Slow down mp3 audio

I love VLC's option of slowing down audio playback. Now I want to take my mp3-files to a portable player and play them there. Unfortunately the player does not have a slow down option. How can I ...
6
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2answers
1k views

Why can I not split a .ape file?

I would like to split a .ape album into individual tracks in .flac format using a .cue sheet. For this I followed a tutorial I found. In short I pass this command to the terminal: cuebreakpoints ...
1
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2answers
424 views

Play a sound file slower or faster

How can you play a sound slower or faster? That would be useful for listening carefully one audio passage or to listen fast forward to find a concrete passage. Is there something with the play sox ...
0
votes
1answer
353 views

USB headset not working properly

I have a Corsair Vengeance 1500 USB Headset and I'm using linux Mint. My headset doesn't always immediately work when connecting it to my pc, but most of the time the headset works. Sometimes the ...
4
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0answers
76 views

Default input device sox

I'm trying to configure sox to use a webcam that I just ordered. I've confirmed that the mic works through the GUI. I ran arecord -l and found that the card, device numbers are 1 and 0, respectively. ...
13
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1answer
3k views

Debian systems seems to recognize speakers but not the headphones for Lenovo laptops

First of All, I know there are lot of questions out there on same topic but still I could not figure out the solution. Being a average system level programmer (beginner in kernel programming) I would ...
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1answer
279 views

What are XRuns?

I have read about them several times and encounter them myself when setting the buffer size too low in jack or quitting audio applications. Nobody ever explains though what XRuns are. Can someone ...
1
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0answers
2k views

Is there any sound enhancer/equalizer for Linuxes that are not Ubuntu?

I am looking for a systemwide audio equalizer for Debian, Gentoo or Red Hat Enterprise Linux, i.e. an audio equalizer that filters the entire signal that is sent to the audio chipset, something ...
0
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1answer
137 views

How do I check whether audio file samples are clipped without playing the file?

I have a big MP3 audio file, about 170 MB, which I'd like to check for clipping. In details I need to increase the audio volume but I don't want to push the volume too high and clip audio samples. I ...
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0answers
200 views

Should I concern about Linux driver for headset?

I was thinking about buying Logitech G430 headset. However, the producer mentions windows operating system only. As my personal experience even if only windows garbage drivers(or I call them fancy ...
12
votes
3answers
2k views

How to rip scratched audio cds?

What is currently the best way to rip scratched audio cds under Linux? What I find complicated, is that there are several tools available but it is not clear if one tool has better error correction ...
2
votes
2answers
323 views

Alsa not detecting my soundcard

So my onboard sound-card died and I bought a new small usb one. With windows it works perfectly, but on my debian testing not so much. It isn't detected by my audio system, and I cannot choose the ...
10
votes
1answer
8k views

Sending to two bluetooth speakers at once

Is it possible to send the same audio signal to two different Bluetooth speakers at once from a single source? I remember reading somewhere that it's possible to send audio to two different sinks ...
2
votes
1answer
132 views

Can ALSA output sound from a motherboard jack input line to HDMI?

I have a machine installed with OpenELEC and I'd like to use the motherboard line input (jack) and redirect sound through the HDMI link. All the other jacks from the motherboard will be unused. I ...
10
votes
4answers
7k views

End sox recording once silence is detected

I'm writing a script that uses sox to record me talking. Now I need sox to wait until it detects sound before it begins recording, and I do have that figured out. But I also need sox to exit once ...
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0answers
319 views

Alsa Problems: Playback Crashes Audacity

I have been having this problem in audacity ever since I switched to Arch. I can start audacity and open a mp3 file, but as soon as I press play, the sound is fast, distorted, and crackles. Once I ...
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0answers
77 views

PulseAudo list-sinks missing ALSA Devices

I'm attempting to switch at runtime between two ALSA devices on the same ALSA card: >>> [blake@e530 ~]$ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: PCH [HDA Intel PCH], ...
1
vote
1answer
20 views

Audio CD authoring w/o an optical drive?

I need to burn an audio CD with a few kinks, like having no gaps between certain songs. I know I can do this with cdrdao, but my Linux box doesn't have a burner. Is it possible to use cdrdao to make ...
0
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0answers
13 views

How to log the sound configuration at the Login screen

Is it possible to generate a log of the sound configuration, when the Ubuntu drum-roll plays, at the login screen? This, in order to understand, how the sound system can be configured 'post login'. ...
3
votes
1answer
5k views

Linux RDP with audio and mic

I've been trying to establish an RDP conexion with a Windows 7 machine from Linux with sound AND microphone redirection, I have tried rdesktop, remmina and freerdp with no use. Finally, with freerdp ...
2
votes
1answer
149 views

Adjust volume using mouse multimedia buttons

I know that there are many questions on the internet about setting keyboard/mouse multimedia keys/buttons in Linux, nevertheless my question is more specific. My wireless input devices: Logitech ...
6
votes
1answer
4k views

Command to extract audio from video without conversion

I know that flv and mp4 files contain aac audio, while avivideo usually mp3 audio streams. What command (avconv, ffmpeg) would extract the audio without transcoding it?
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0answers
166 views

USB Audio detected by ALSA but not JACK?

I have a Presonus AudioBox USB device, connected to a USB 3 port, that supports both MIDI and Audio input. When I launch JACK and open the connection list from QJackCtl, I can see that the AudioBox ...
1
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0answers
83 views

Headphones always muted after restart

After system restart my headphones are always muted. I have to unmute and crank volume from 0% to 100% using alsamixer. I of course tried to do alsactl store multiple times but it does not help. It is ...
0
votes
1answer
82 views

Setting Alsa to output 44.1kHz

I would like Alsa to output everything at 44.1kHz (by default it looks like it's using 48kHz). I understand that the correct option would be something like: defaults.pcm.dmix.rate 44100 But where ...
0
votes
1answer
739 views

Drivers support for Sound Blaster Z/Zx on Linux

I am planning to buy a Sound Blaster Z or Zx (sound card) for my computer (which will run both Windows 7 and Linux Debian 7/8 or Fedora 21/22), but I heard it does not have a good support on Linux. ...
2
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1answer
58 views

How can I beep without PC speaker

There is no PC speaker in my laptop. Is there any way to get beeps by a normal speaker in Arch Linux?
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0answers
33 views

Audio File Search, Count and Sort - OS X or Synology

There is a collection of audio files on a Synology NAS. Approximately 24,000 albums worth, that I need to analyse and report on. I will need to: Count total number of files Count types of files ...
6
votes
3answers
15k views

How do I convert FLAC files to AAC (preferrably VBR 320k+)?

I back my CDs up to FLAC and then transcode to AAC (.m4a) files for portability on my android phone and the wife's iPhone. I had been using XLD on Mac and it does a great job but I'd rather not steal ...
3
votes
1answer
2k views

No audio codecs on Fedora 21

I've been trying to listen to music in Fedora 21 but unfortunately I cannot. Here is what I tried: yum update yum install gstreamer gstreamer-plugins-good gstreamer-plugins-bad ...
2
votes
0answers
36 views

How to dynamically control the audio volume based on current decibels

Since the Internet videos have different sound volume levels I am wondering is there a way to dynamically decrease the audio volume if it's above certain decibels to a normal value. Could someone ...
1
vote
0answers
71 views

Help me to find my speakers and headphone paths (name of PCM device)

I am really confused trying to get my speakers and headphone device PCM names like a "hw:x,x" or something like that; cat /proc/asound/devices 2: [ 0] : control 3: [ 0- 0]: digital audio ...
5
votes
2answers
4k views

Set default sound card in Pulse Audio

I have two soundcards on my systems and pulseaudio always picks the wrong one. How do I set up the default soundcard in the pulse audio preferences?