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

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27 views

How to broadcast voice from USB microphone to apache?

I have a webcam and a microphone. I wan't to send both, sound and video to my index.php so i can see the video from the camera and hear the sound from the microphone. I already managed to stream the ...
1
vote
1answer
134 views

Can I record sound until silence OR a maximum length of recording?

Looking at detecting sound until some silence occurs, I arrived at the command rec recording.flac rate 32k silence -l 1 0.1 3% 1 3.0 3%. I realize my specific use would be somewhat different: I do ...
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1answer
13 views

How can software that doesn't natively support JACK be made to work with it?

Audacity, for example, can be switched to JACK if needed. What about software that can't but can be switched to alsa?
1
vote
1answer
190 views

pulseaudio-equalizer keeps resetting at startup

Every time I start my laptop, pulseaudio-equalizer it's enabled. Even when I disable it (inside the app there's a button to disable it). How can I avoid that? Moreover, something is resetting my ...
1
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1answer
196 views

How do I configure my audio?

I have a relatively new build that I can't seem to get audio to work on. I have one card that i can see with pacmd list-cards: 1 card(s) available. index: 0 name: <alsa_card.pci-...
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0answers
26 views

What's the canonical way to get individual stream size in a video file?

I have a video file. It contains a video stream, and a couple of audio and subtitle streams. I want to get the size of each of these streams. I've already looked at ffprobe/avprobe and mediainfo, ...
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2answers
92 views

No audio through either soundbar or desktop on Debian

I'm using a Debian stable box with a Dell monitor and the Dell AX510 "stereo soundbar". The "soundbar" has a large frontal speaker as well as two headphone jacks on the left. While the hardware ...
8
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4answers
2k views

Is there a good command line tool for converting to and from FLAC audio format?

Ideally, I want to convert from MP3 to FLAC and back. I also need to be able to script this.
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0answers
30 views

recordMyDesktop can't use jackd for audio

If I try to have recordMyDesktop (technically qt-recordMyDesktop) capture audio via jackd, when I hit record it immediately stops with the message: recordMyDesktop has exited with status: 4352 ...
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1answer
86 views

Restoring sound drivers on Debian 8

I have installed Nvidia graphic drivers for my Debian 8, but the installation contained a new sound driver, which has broken the sound on my PC. How can I uninstall the Nvidia one and restore the ...
3
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0answers
66 views

Linux: can't open /dev/dsp

I am getting an error while running festival on my system: linux: can,t open /dev/dsp I was searching for this error on the Internet and found this instruction: To solve this problem just write ...
0
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1answer
223 views

Raspberry pi hdmi audio not working

I have a raspberry pi 2 running with Ubuntu Mate. When I try to play video or audio files with omxplayer, I do not get any sound on my TV which is connected to the Pi via HDMI. If I force the Pi to ...
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2answers
1k views

Volume up/down function keys limited to gnome-volume-control “Unamplified 100%” level

Using GUI gnome-volume-control: Sound Preferences ---------------------------------------------------------------------------- Output Volume: [--------------+ ] ...
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1answer
2k views

How to get Realtek ALC887 5.1 sound detected in debian?

I have motherboard based on z170 chipset which have next string in specs: Realtek® ALC887 codec it has 5.1(3 connectors) and stereo(1 connector) connectors not counting Line In and microphone ...
2
votes
1answer
199 views

Debian 8 Gnome 3 recognizes Bluetooth speaker as input device

I'm using Debian 8 with Gnome 3 on a laptop with the bluetooth that comes with the 7260ac wifi card. 50% of the time my Bose SoundLink Mini Bluetooth speaker can connect with the laptop successfully ...
3
votes
0answers
39 views

Directing sound output for specific applications

I'm trying to direct the sound from Youtube running in Opera to my sound card's HDMI output (to a TV), but still have all other OS sounds go to my PC's "Built-in Audio Analog Stereo" playback device. ...
0
votes
1answer
2k views

How to connect to Bluetooth headset on Debian 8.1

I have a Bluetooth headset Suicen AX610. My system is Debian 8.1. I want to do run my headset, but I can't. The debian 8.1 can find the headset, But, the debian 8.1 can't pairing the headset, ...
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0answers
13 views

how to know whether a headphone is plugged in from terminal? [duplicate]

I'm looking for something like presence of a file or its content that could indicate the headphone's presence. I am working on if statement on conky with condition being presence/absence of headphone/...
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1answer
57 views

ALSA sounds card volume range numbers, and Difference between Control Names

I'm developing my first sound card driver in Ubuntu with ALSA. Implementing a volume control for the sound card I stumbled upon a few questions. 1) For the function that is assigned to ...
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0answers
101 views

FreeBSD,no sound

My speakers does not seem to work under FreeBSD 10.2-RELEASE .All drivers are loaded using kldload snd_driver. What to do? pciconf -lv: hostb0@pci0:0:0:0: class=0x060000 card=0x50001458 chip=...
2
votes
1answer
291 views

How to reduce size of a FLAC file without damaging its quality?

I got collection of vinyls which I paid for them to be digitized in FLAC. However my Hard Drive is getting full (91% full as of today) and the smallest of these vinyls is 2.3 GB in size! I would ...
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0answers
13 views

KDE disable sounds of desktops not being viewed

I am using Manjaro KDE desktop. I have 4 different desktop environments. I want to be able to stream a different video to each one and be able to flip through them at will. I have successfully done ...
0
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1answer
3k views

BeatsAudio Driver for Linux using laptop model HP Envy M6

Back when I was on Windows 8, I installed the Beats Audio driver for Windows and everything sounded so clear and beautiful. I'm running Linux now (specifically Mint) but I wouldn't know how to install ...
3
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1answer
309 views

How to make Alsa Loopback device to work in Puredata

I'm trying to route an audio signal from an Airplay source (with Shairport-sync) to Puredata. To do so, I created a Loopback Device in Alsa. Then I set this virtual device as Shairport's output like ...
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4answers
6k views

My audio device not working

I have been setting up a new CrunchBang Linux and my sound doesn't work. When I type lspci -v command and alplay -l command in command prompt I can see that my sound card is connected and detected. ...
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1answer
186 views

Internal speaker sound at login screen - but not after login (only external speakers work)?

Sound plays (drum roll) at login screen. In Ubuntu and Xubuntu XFCE no sound emits from the laptop speaker, but does from the external speakers. Pulseaudio panel monitor bar dances with the sound.... ...
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2answers
639 views

How to create the spectrogram of many audio files efficiently with Sox?

I have a bunch of audio files and I would like to create the spectrogram for each individual file using Sox. Usually, for a single file, I do this: sox audiofile.flac -n spectrogram However I don't ...
2
votes
1answer
85 views

USB audio adapter causes HTML5 videos in Firefox to fast forward

After changing my desktop from Arch Linux to NixOS, playing HTML5 videos in Firefox has become buggy. They will fast forward when you play them, but only when using the USB audio adapter. Pulseaudio ...
3
votes
1answer
2k views

Real-time noise cancellation

I have a very noisy heater in my apartment producing a constant whining sound between 6230 and 6280 Hz. The frequency varies but seems to fall within this range. Other apartments in my building have ...
0
votes
1answer
107 views

How to convert WMA to VORBIS or OPUS?

My girlfriend accidently bought an audio book on the internet and she saved it on my hard disk in windows media audio format (.wma) and now she asks me how to listen to it. I'm a bit puzzled this ...
2
votes
1answer
531 views

How do I create an ALSA virtual device that outputs to both HDMI and headphone jack?

I can tell my programs to output to either HDMI or the headphone jack just fine, but is there a way to create a virtual device in asound.conf that outputs to both simultaneously? This config comes ...
2
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0answers
164 views

Linux sound: play back audio from input only on specific output device

I currently have a shairport (AirPlay) server which receives audio data and outputs it over optical SP/DIF (Toslink) via a USB-to-Toslink adapter. This digital signal goes through an equalizer, and ...
3
votes
2answers
684 views

How to grab the audio channel from an MP4 video file into a separate audio file?

Having an MPEG4 (MP4 container, H264 AVC video, AAC audio) video clip downloaded from YouTube, how to separate its audio channel into an independent audio (without de&re-compressing the audio ...
1
vote
2answers
510 views

Unable to listen or use microphone in Skype

I installed Skype 4.3.0.37 on my machine (debian 7 64bits XFCE 4.10) and both incoming and outgoing audio is not woring. I tried the echo sound service of skype but to no success. Here my ...
0
votes
1answer
254 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
628 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
93 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 ...
1
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1answer
40 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 ...
1
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1answer
76 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 ...
1
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0answers
67 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 ...
0
votes
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
5k 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.
0
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0answers
49 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
votes
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 ...
2
votes
0answers
32 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
139 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
vote
0answers
320 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
votes
1answer
532 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
votes
1answer
46 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 codecs,...