Questions tagged [alsa]
For questions pertaining to ALSA, the Linux sound subsystem. ALSA sits below advanced systems like PulseAudio.
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34 views
ALSA lib conf.c error for Using speech recognition [closed]
pygame 1.9.4.post1
Hello from the pygame community. https://www.pygame.org/contribute.html
ALSA lib confmisc.c:1281:(snd_func_refer) Unable to find definition 'defaults.bluealsa.device'
ALSA lib ...
2
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0answers
30 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-...
1
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0answers
35 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 ...
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0answers
46 views
Problem with aplay: “set_params:1363: Unable to install hw params”
I have been successfully using the command
aplay -D bluealsa:HCI=hci0,DEV=EB:06:BF:19:C2:D3,PROFILE=a2dp Open.wav
to play sound over a BlueTooth device.
HOWEVER after a few hours of trouble free ...
0
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2answers
55 views
Setting up config for alsa at /etc/asound.conf
I have the following set-up with 3 USB audio devices - one for the output, the other is an input from my record player which I put on module-loopback, and the final one is a PS3 eye that I am trying ...
0
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0answers
46 views
Bluetooth audio device as (virtual) hardware device (for SIP-calls via Linphone)
I have an external USB-Bluetooth-Dongle plugged to my Pi and a Bluetooth Speaker (with microphone) that is connected via the dongle.
I manually compiled blueZ to version 5.50 and bluealsa to version ...
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0answers
13 views
ReSpeaker 2Mic Expansion Board Not Showing Up Under “aplay -l”
I am very new to the raspberry pi. I am setting up the Respeaker 2Mic Expansion board on my Raspberry Pi 3 B+. I have downloaded the files from GitHub through the terminal, have physically connected ...
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0answers
77 views
Microphone Error: arecord: main:722: audio open error: No such file or directory
I am a 100% beginner when it comes to raspberry pi and this is my first project. I am trying to configure a microphone and speaker for an alexa module being integrated into my magic mirror project (...
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0answers
62 views
Raspberry Pi as a bluetooth audio sink - how to make it 5.1 capable?
My Raspberry Pi (Pi 1 model B) is connected to a 5.1 analog sound system through an USB sound card (Asus Xonar U7).
I added a bluetooth dongle and bluealsa to the Pi to turn it into an audio device, ...
1
vote
1answer
68 views
How can I find the answer to “What does Raspbian use to handle audio?”
I think some releases of Raspbian handle audio differently than the previous version. If the use of ALSA or Pulse Audio (or some other software) has changed with Raspbian releases, what do I need to ...
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1answer
144 views
soundcards suddenly disappear (adafruit speaker bonnet + neo pixels)
This afternoon I was playing sound through my adafruit speaker bonnet just fine.
That means I installed the speakers and neopixels according to the guides and had multiple reboots for circuit python,...
2
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1answer
81 views
How can I direct the output both of mpg123, and of eSpeak to the same ALSA sound device?
I'm currently struggling with the following scenario: I'd like to make my Raspi (3B) play a short MP3 jingle and then, after a 250 µsec pause, speak a short text by using an add-on sound card (...
1
vote
2answers
199 views
aplay can see sound device but amixer can't
I'm using the speaker bonnet / following instructions from adafruit: https://learn.adafruit.com/adafruit-speaker-bonnet-for-raspberry-pi/raspberry-pi-usage.
I followed all of the steps (skipping the ...
2
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0answers
192 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 ...
0
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1answer
62 views
Pulseaudio module-combine-sink always throws Failure
I am new to pulseaudio. As per my requirement, I need my audio output to be routed to either connected speaker, bluetooth speaker, or both.
I am able to play the media file on speaker, or bluetooth ...
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0answers
23 views
How to enable audio volume on 3b+ /w vx1 usb sound card
I have an rpi 3b+ that I want to get all audio to come out of the USB sound card - a VX1, which seems to have worked on an earlier version from this
When I power it up / connect it, it gets detected ...
1
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0answers
43 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 ...
4
votes
1answer
2k views
How to stream sound to a bluetooth device from a raspberry pi zero
I have a raspberry pi zero W and I would like to stream sound over bluetooth to a bluetooth-enabled speaker / headphone.
So how to achieve this with alsa?
1
vote
1answer
1k views
How do I increase the input volume of a microphone connected to pi .Its using the I2S interface
So i have managed to get input from a microphone using I2S interface following this link .
https://learn.adafruit.com/adafruit-i2s-mems-microphone-breakout/raspberry-pi-wiring-and-test
if i use the ...
1
vote
1answer
108 views
Roland midi controller not recognized
I was able to use the Pi as a Midi synthesizer for a Midiplus AKM320 controller using fluidsynth and aconnect. Then I got a larger Roland A49 midi keyboard, but am unable to get this to work. It shows ...
0
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1answer
111 views
Cannot play audio from two processes at the same time
I want to be able to output to a speaker from multiple applications at the same time, but currently it's only allowing me to output to the speaker from a single application.
I have the following ...
2
votes
1answer
94 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 ...
4
votes
2answers
772 views
HDMI audio on Raspberry pi 3 b not working
I've already seen
Audio over HDMI not working on Pi 3 (audio not working though HDMI, but working though speakers)
but the actions described by @Vader did not work for me.
The fact is that it ...
1
vote
0answers
69 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
...
0
votes
1answer
140 views
.asoundrc file is rewritten on each boot
i read all of the posts here and commentated on one of them but comment was deleted as it was a question i guess, so i mage my own now, sorry for that...
Ok the problem:
USB sound card mic is not ...
2
votes
1answer
306 views
arecord / aplay stop after a while
I am looping the "PCM audio in" to the "PCM audio out" on a Sound Blaster USB card using the following command:
arecord -q -f S16_LE -r 48000 -c 2 -D dsnoop:HD | aplay -q -D plughw:HD
It works fine, ...
1
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0answers
778 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
1answer
415 views
Command aplay does not work without sudo
The command aplay only works if preceded by sudo. omxplayer test.wav will play the audio I recorded with arecord just fine. aplay text.wav does not, but sudo aplay test.wav does. The suggestions from ...
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0answers
109 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:
...
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0answers
208 views
ALSA errors with FLDIGI on a Rpi3b+
I wanted to install the latest version of fldigi on my rpi laptop. I have previously installed the version listed in the synaptic manager but then uninstalled that and installed the latest version ...
1
vote
1answer
53 views
RPi3 B+ Stretch. Config for external capture device & onboard headphone jack
I am planning to use an external Microphone "ReSpeaker 4Mic Hat" from Seeed-Studio on my RPi3 B+ Stretch OS. However, when I run alsamixer, my external Mic is not the default capture device. It seems ...
0
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0answers
154 views
Chromium and ALSA route problem
I have set up a virtual device in asoundrc which works in Audacity but when I open it using the Chromium --alsa-input-device flag I get the following error:
Rate doesn't match (requested 48000Hz, get ...
0
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1answer
243 views
Alsa combine 4 mono usb microphones into 1 stereo device
Based on this post: https://raspberrypi.stackexchange.com/a/58174 I was able to get 4 usb microphones to behave as 1 device with 4 channels. What I am looking to do is down mix the 4 microphones into ...
0
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0answers
95 views
When trying to play recorded audio file using aplay, gets an error saying No such file or directory
I'm trying to record and play recorded audio file. I use Armbian. I recorded a audio using arecord -D plughw:0,0 --duration=10 test2.wav command. When I'm trying to play that audio file(test2.wav) ...
2
votes
1answer
164 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: ...
0
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0answers
107 views
Difference between sound and audio nodes in RPi 3 device tree?
I looked a bit into the device tree of Raspbian 9 on Raspberry Pi 3, using:
dtc -I fs /proc/device-tree > myrpi-dev-tree.txt 2>&1
I've noticed there is a node called audio:
audio {
...
1
vote
0answers
633 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 ...
2
votes
3answers
764 views
Pygame and Alsa lib error
I am running a pygame window on a raspberry pi. The raspberry pi is connected to an lcd through gpio (not hdmi). My pygame script does not contain any mention of audio, only some basic rectangle ...
0
votes
0answers
425 views
installing PulseAudio completely disables microphone and audio output configured in ALSA?
I spent a few days getting an I2S microphone and a speaker that was soldered into the proper jacks below working with ALSA. To accomplish this, I tweaked the .asoundrc file to modify the defaults, and ...
0
votes
1answer
48 views
Why does out123_open () shut down my sound card?
I'm talking about this function call:
r = out123_open (sound::mp3_output_handle, "alsa", NULL);
The return value of r is then OUT123_OK, but in the same moment, the status LED on my sound card (...
2
votes
0answers
227 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/...
10
votes
1answer
18k views
How can I use an external USB sound-card and set it as default?
I've got an external USB sound-card from C-Media running on my RPi3. I can play some recordings using aplay/arecord by specifying the card index and ALSA plugin. However, many other sound files does ...
0
votes
1answer
509 views
OMXplayer play video with no sound and mp3 at 2/4 times the speed
Using a USB sound card, I'm trying to play mp3 files, with the default omxplayer. But although all other software works fine, omxplayer play my mp3 files at 2x speed, sometimes even 4 times.
Is ...
1
vote
1answer
2k 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 ...
1
vote
1answer
139 views
How do I configure the alsa driver in out123?
I'd like to play MP3 files on my Raspi 3B by using mpg123, so I added (among others) the following lines of code into my app:
r = mpg123_init ();
if (r != MPG123_OK) {
ret -= r;
...
0
votes
1answer
977 views
Use internal sound card speaker and USB MIC as default
Problem
I'm using UV4L for audio/video streaming.
I'm using 3.5mm speaker, and usb microphone
UV4L uses default audio/video device for streaming, but only audio work.
USB MIC doesn't work.
But ...
1
vote
1answer
478 views
Issues accessing a microphone from Node on Pi Zero
I am having issues using a microphone in a Node script.
The microphone (a SEEED Array mic) works when running the command line:
arecord -D plughw:1 --duration=10 -f cd -vv ~/rectest.wav
It does not ...
1
vote
0answers
441 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)"...
2
votes
2answers
561 views
Full duplex audio over i2s (Adafruit MEMS + DAC)
I have setup a pi-zero with digital mems mics from Adafruit, and also the digital DAC. I can use arecord to record stereo audio, and then aplay to playback the audio over the DAC. Interestingly, the ...
3
votes
1answer
3k views
Software audio mixer
I need to be able to simultaneously play several files on my headless Raspberry Pi and dynamically changing their volumes, preferably with Python.
I managed to get it to work with the swmixer Python ...
