Questions tagged [alsa]
For questions pertaining to ALSA, the Linux sound subsystem. ALSA sits below advanced systems like PulseAudio.
94
questions with no upvoted or accepted answers
4
votes
1
answer
1k
views
What modifies my .asoundrc file every boot?
My .asoundrc file gets modified every boot. If I delete it, a new appears at reboot:
pcm.!default {
type hw
card 0
}
ctl.!default {
type hw
card 0
}
If I make changes ...
- 141
3
votes
0
answers
261
views
Microphone is not recording with HifiBerry and Raspberry Pi 3
I installed the HifiBerry driver as specified. The Board is recognized and the audio output works fine.
Just the audio input seems to be not working. I checked if the microphone is muted but I can't ...
- 131
3
votes
0
answers
1k
views
Raspberry Pi Zero W Alexa Microphone Not detecting, but speaker works
So I have looked online and I even got different mics and adapters to get this working, but it still doesn't work. I was able to successfully setup my Alexa Pi on the RPi Zero W, because when I boot ...
- 31
3
votes
1
answer
6k
views
Alsa lib error pyaudio on raspberry pi 3
I'm getting these ALSA lib errors when trying to use pyaudio.
I know my mic works as I can live stream audio through gstreamer.
Can anybody explain to me why i'm getting these issues:
ALSA lib ...
- 31
3
votes
0
answers
1k
views
Raspberry Pi / PS Eye - Cannot Load Mixer Controls: Invalid Argument
I want to record with a PS Eye (USB Camera-B4.09.24.1) for an DIY Amazon Echo with Raspberry Pi 2b.
When I attempt this in alsamixer, it exits with the following error when I use F6 to change to the ...
- 31
3
votes
0
answers
658
views
LED strip PWM on GPIO18 + mono audio output
On the RPi 3 I would like to control a WS2811 LED strip with PWM (GPIO18) by keeping the audio working.
It looks like for the RPi Zero (I'm unsure for RPI 3 though) left and right channels of the ...
- 131
3
votes
0
answers
2k
views
Arecord not working with USB Microphone anymore
Before I start, I'd like to tell you that I've used arecord in the past with the Raspberry Pi 2 using the same USB Microphone and it has worked just fine. For some reason, it doesn't seem to work ...
- 324
3
votes
0
answers
3k
views
Jack server not working on Raspbian
I wrote a little python app (using PyDub), that plays sound files.
Everytime I run it, I get the these errors:
ALSA lib pulse.c:243(pulse_connect) PulseAudio: Unable to connect: Connection refused
...
- 31
2
votes
0
answers
141
views
High-speed USB Audio Streaming
I am using a Raspberry Pi 3B+ as the USB host for an embedded device that I have configured to appear as a USB Audio 2.0 compliant microphone.
I am currently using PyAudio for opening and recording ...
- 46
2
votes
0
answers
619
views
ALSA errors on raspberry pi 4
So i'm trying to make a virtual assistant on a raspberry pi 4. I have coded the bot to work on my windows machine but now I'm running into errors while using the raspberry pi I figured out which part ...
2
votes
0
answers
160
views
Real Time audio recording from two audio input and playing simultaneously in 2 audio output
I have one Raspberry Pi with 2 USB speakers and a mic system. I want to record simultaneously from one mic and play in another speaker. Like, MicA recording will be played in SpeakerB and MicB ...
- 21
2
votes
0
answers
884
views
no audio with playbin or autoaudiosink on gstreamer, but plays with alsasink
recently upgraded my raspian, and installation of RPi with Hifiberry AMP.
and my python application that utilizes gstreamer's api is no longer working.
as a test to figure out why I am using the gst-...
- 121
2
votes
0
answers
246
views
How do I capture and stream HDMI audio out to LAN
I have a RPi that is running videos with omxplayer and outputting to my tv. HDMI video and audio out work just fine, but I would additionally like to stream only the audio to my network (via RTP or ...
- 41
2
votes
0
answers
390
views
USB audio device is displayed as default, but is not
I have set the USB device on my Raspberry Pi to default. The file /lib/modprobe.d/aliases.conf:
options snd-pcsp index=-2
options snd-usb-audio index=0
options cx88_alsa index=-2
options snd-atiixp-...
- 121
2
votes
0
answers
129
views
Is perfectly uninterrupted alsa sound over USB possible?
I am playing a sine wave from a Rpi3 via pure userspace ALSA to the hw device of a USB sound card (using the official PCM example, no sound servers installed).
But the wave never stays perfect, after ...
- 121
2
votes
1
answer
649
views
USB Soundcard shows mic as Playback device in alsamixer
I have some trouble with my USB sound card 68878 from goobay.
Alsamixer showing unexpected devices
Secondly when I use alsamixer displaying Playback items. I see both a Speaker and a Mic:
For ...
- 804
2
votes
0
answers
2k
views
Streaming audio on the Raspberry Pi Zero W with ffmpeg
I have a problem with ffmpeg giving no audio when recording using alsa.
Does anyone know how to get a Raspberry Pi Zero W to record and stream audio with ffmpeg using alsa?
I have a project where I ...
- 21
2
votes
0
answers
351
views
How to record usb audio and monitor at the same time
I have a usb audio device plugged into my Raspberry Pi 3 with Raspbian Stretch. Recording to an mp3 with sox works fine with this line:
AUDIODEV=dsnooped rec -c 1 -q /media/usbstick/recording/...
- 21
2
votes
0
answers
639
views
Pulseaudio unkown PCM pulse
Using IceS for Icecast when I try to record from "pulse" device I get this error when I start IceS:
ALSA lib pcm.c:2495:(snd_pcm_open_noupdate) Unknown PCM pulse
And the program quits.
Here is my ....
- 143
2
votes
0
answers
647
views
Cannot open hw:0,0 default audio device
Hello I am trying to setup icecast streaming server.
Previously I used Loopback devices and it worked fine. But Loopback devices does not have a mixer so I cant play two things at once is you see ...
- 143
2
votes
0
answers
1k
views
No sound when PulseAudio is running
I have a Raspberry Pi 2 running the latest Raspbian jessie. I have sound working just fine via ALSA and analog out. Recently I installed pulseaudio and have found if pulseaudio is running I no longer ...
- 121
2
votes
0
answers
5k
views
No display with "dtparam=audio=on"
This is my /boot/config.txt: http://termbin.com/0pq4 (1600x900 screen with HDMI to VGA adapter, turned vertical):
# For more options and information see
# http://rpf.io/configtxtreadme
# Some ...
- 21
2
votes
0
answers
728
views
Audio hangs on repeated playback
How do I fix hanging audio in Raspbian GNU/Linux 8.0 (jessie)?
When I playback audio using, for example, aplay, the first playback
works fine. Subsequent playback will hang indefinitely. Several
...
- 121
2
votes
0
answers
1k
views
Loopback to aux out and record audio at the same time from audio in
I am currently developing a device that silences adverts from a streaming radio. Im taking audio input from a radio to a USB sound card.To silence the ads, I have am currently using the arecord ...
- 93
2
votes
0
answers
671
views
How to Set Up Driver Support for I2S Audio Codec
I am building a I2S audio codec using an ADAU1781 chip, which will communicate with the Pi via the GPIO pins. In my research I have found that there is an ASoC driver built into the Raspberry Pi ...
- 169
2
votes
0
answers
2k
views
Pulseaudio to ALSA output gets stuck
I've been working on that for a couple of month now, but still don't have a very good solution.
My general problem is that my PulseAudio over ALSA audio output is blocked or stuck, I can unblock it ...
- 121
2
votes
0
answers
4k
views
ALSA channels count error while using simpleaudio with USB DAC
Here is the code:
wave_obj = sa.WaveObject.from_wave_file("sounds/2c.wav")
wave_obj.play()
And this is the error I get:
ALSA lib pcm.c:7924:(snd_pcm_set_params) Channels count (1) not available for ...
- 281
2
votes
0
answers
781
views
Bluetooth audio without pulse?
Is there any way I can connect to my Bluetooth headphones and listen to audio without using pulseaudio?
I also can't use a GUI because reasons.
Also, I'm on Raspbian Jessie minimal.
- 21
2
votes
0
answers
2k
views
alsa cannot read control invalid argument
I am trying to record audio with the PS Eye on a raspberry pi model b plus (I have tried with older b models and the same issue occurs as below).
I am able to record, and playback the recording with ...
- 121
1
vote
0
answers
194
views
Raspberry Pi 3 B+ with Raspberry Pi OS (32 bit) screen fades out while booting
I've installed the official 7" touch screen on my Raspberry Pi 3 B+. I used the Raspberry Pi Imager to put Raspberry Pi OS (32 bit) on a SD card and while booting, the screen fades out to a black ...
- 111
1
vote
0
answers
405
views
Sound playback trough bluealsa-aplay not working as a service
I am trying to manually setup my raspberry pi 4 as a Bluetooth audio receiver, but there is no sound playback when I start the bluealsa-aplay service I created. It only works when I run the bluealsa-...
1
vote
0
answers
60
views
Dupe output to multiple cards
I am following the https://alsa.opensrc.org/Asoundrc Dupe output to multiple cards example on 2 stereo usb sound cards.
I changed things slightly but basically its the same as the above and 1 card ...
1
vote
0
answers
53
views
How to play through bluetooth speakers with RPi renderer on lan and openhome/linn android phone control point
Using RPi3b and clean installation of RaspberryPi OS Lite and connecting to network using lan.
Media is stored on NAS and served to lan by minimserver.
I have installed upmpdcli and mpd on RPi and ...
- 11
1
vote
0
answers
71
views
How to change alsa sound output name
Alsa volume controller of spotifyd uses 'Master' for output and does not work on a PI. Checking alsamixer I saw that the output is called headphone. How can I change this value?
- 200
1
vote
0
answers
81
views
Respeaker 4 install on Pi 3b and buster
I have just bought a respeaker 4 and successfully installed it by the looks of things - I have respeaker under the audio icon input tag.
It is the classic rubbish install process with the script just ...
- 109
1
vote
0
answers
290
views
Play audio on two sound cards at the same time
I currently try to setup my raspberry pi 3 with a HiFiBerry DAC+ Pro XLR (using Raspian based on Debian 10).
I installed the sound card and configured alsa to use device 1 as new default. Restarted ...
- 111
1
vote
0
answers
246
views
Change Default Microphone
I am having trouble changing my default mic on raspbian buster lite (kernel 4.19.36 on the 3B+).
I know that the mic is fully functional because when I run: arecord -D plughw:1,0 --duration=3 test.wav ...
- 111
1
vote
0
answers
349
views
Route native Alsa app audio to bluetooth speaker with Pulseaudio?
I have an app that only supports Alsa, and I want to route its audio to a Bluetooth speaker. I'm attempting to use Pulseaudio to do it if that is possible.
The Bluetooth speaker is paired and I can ...
- 11
1
vote
0
answers
347
views
Getting gstreamer to produce out of usb-audio
I cannot get gstreamer on raspbian (buster) to play through a
usb-audio device, despite other players (vlc, aplay) being able to do
so. but i need gstreamer because of its API access, for mpd players
...
- 111
1
vote
0
answers
6k
views
What does amixer cset numid=3 3 do?
In order to solve missing audio via HDMI with Raspberry Pi 4B (Raspian Buster) I came across
amixer cset numid=3 2
which didn't do the trick for me. But randomly I checked numbers from 0 to 4 and ...
- 11
1
vote
0
answers
3k
views
ALSA Errors on Pi 3B+ using SpeechRecognition and PyAudio (Original Post missing stuff)
Using PyAudio I simply ran this piece of code:
import pyaudio
p = pyaudio.PyAudio()
for x in range(p.get_device_count()):
print(p.get_device_info_by_index(x).get('name'))
Getting these Errors:
...
1
vote
0
answers
582
views
Mopidy with PulseAudio sound over TCP
So I have been struggling with this for a while now and looked everywhere for solutions.
I have installed Mopidy with Spotify extension on my Raspberry Pi 3B but I can't seem to get the pulseaudio ...
- 11
1
vote
0
answers
126
views
Aux and HDMI audio options missing
Background (To give some perspective on the issue):
I am using mopidy and mopify as an audio server on a Raspberry Pi 3 B+. WHen setting this up, I found that it would not output through a USB audio ...
- 160
1
vote
0
answers
655
views
Connect Raspberry Pi via Bluetooth to Sound Bar
after spending the last couple of weeks trying to connect my bluetooth soundbar to my Raspberry Pi 3 B+ and playing all audio output on it I am close to giving up.
Using the GUI I can successfully ...
- 11
1
vote
0
answers
194
views
Jackd problem on RPi3 B+ Stretch
I'm running Stretch on an RPi 3 B+. I have a C-Media USB sound card showing up as:
card 1: Device [USB Audio Device], device 0: USB Audio [USB Audio]
and ALSA recognises it as the default card
...
- 11
1
vote
0
answers
2k
views
PS3 eye's 4ch microphone with the Raspberry Pi
Recently I have been trying to get the 4ch microphone on the sony playstation 3 eye to work with my Raspberry Pi 3B (running the latest OS of raspian-stretch to date (2018-06-27 version) as a part of ...
1
vote
0
answers
390
views
Audioinjector streaming over RTP input errors: "hw:0,0: Protocol not found", "Unknown input format: 'alsa'"
Using a RPI 3B running Debian Jessie, I've been trying to get a simple stream of the "flatmax" audioinjector's onboard mic over RTP to a VLC player. I've tried many different commands such as:
...
- 11
1
vote
1
answer
2k
views
Why does device 0: bcm2835 ALSA on RPi 3 have 7 subdevices?
OK, so on Raspbian 9, on Raspberry Pi 3, if I try to list audio devices, I get this:
pi@raspberrypi:~ $ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: ALSA [bcm2835 ALSA], device 0: ...
- 201
1
vote
0
answers
599
views
Python Speech Recognition not detecting audio in script - Audio is detected in audacity and bash
I am trying to get python speech recognition (PSR) for a basic Pi project.
I am using:
OS:
PRETTY_NAME="Raspbian GNU/Linux 9 (stretch)"
NAME="Raspbian GNU/Linux"
VERSION_ID="9"
VERSION="9 (stretch)"...
- 111
1
vote
0
answers
338
views
Unable to create a ALSA "multi" device from two USB sound cards
I'm trying to create one virtual 4 channel audio device in ALSA from two USB sound cards, using this tutorial: https://alsa.opensrc.org/TwoCardsAsOne
My asound.conf looks like this:
pcm.multi {
...
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