46
votes
Accepted
How can I use an external USB sound-card and set it as default?
Background
It's amazing to see how much effort has been put in to trying to resolve
various sound related problems for the Raspberry Pi. Apparently it must be
the weakest spot for new users to ...
- 1,277
27
votes
Accepted
How do I configure my sound for Jasper on Raspbian Jessie?
According to the ALSA Wiki, under the title that reads "How to choose a particular order for multiple installed cards", it states the following:
Which card is card number 0, 1 and so is by default ...
- 573
15
votes
Accepted
alsa-base conf file missing
Turns out the file is now called alsa.conf and is found in /usr/share/alsa.
Changed the lines
defaults.ctl.card 0
defaults.pcm.card 0
to card 1 and that's me up and running. Looks like others have ...
- 383
9
votes
Accepted
Setup output and input audio on different cards
To get different definitions for playback and capture, use the asym device:
pcm.!default {
type asym
playback.pcm "plughw:0"
capture.pcm "plughw:1"
}
(Something like this is not ...
- 561
8
votes
Accepted
Difference between "hwplug" and "hw"
hw accesses the hardware device directly.
plughw inserts sample rate and format conversion plugins, if needed.
- 561
7
votes
Accepted
Pi 3 B+ no audio device found
Also check the /boot/config.txt file. It should look like this:
# Enable audio (loads snd_bcm2835)
dtparam=audio=on
- 151
6
votes
Best way to setup USB mic as system default on Raspbian Jessie
Ok, first delete the file /etc/modprobe.d/alsa-base.conf Raspbian Jessie does not use this config file like Wheezy did.
Now, to set the USB sound card to your default card you will need to edit the ...
- 6,185
6
votes
Accepted
FFMPEG: Unknown input format: 'alsa'
Short answer
run:
sudo apt-get install libasound2-dev
before attempting to configure and compile ffmpeg or anything where you need alsa support.
Process for resolving similar build dependencies:
...
- 406
6
votes
Accepted
How to stream sound to a bluetooth device from a raspberry pi zero
I did manage to play sound and record using my Marshall MID headphones using a Raspberry Pi Zero W, which has a builtin WiFi + Bluetooth adapter, but no audio jack.
Please note that there are ...
- 804
5
votes
Accepted
Possible to route audio directly from usb-audio line-in to same usb audio line-out?
I found a simple solution using just ALSA and uses little CPU - around 3-5% on RPi 3 using latest Jessie build and a USB Audio Device
It appears that recent builds all come with ALSA's dmix plugin ...
- 371
5
votes
Pi 3 B+ no audio device found
I suggest you run raspi-config, look at Advanced Options>Audio and make sure the "1 Force 3.5mm ('headphone') jack" option is selected.
Then reboot...
- 354
4
votes
Accepted
pigpio PWM and ALSA
By default pigpio uses the PCM peripheral to time the DMA leaving the PWM peripheral free for standard audio.
Perhaps your ALSA device is using high quality audio. If that's the case you need to use ...
- 66.6k
4
votes
Accepted
Change Volume via single command?
Create a Bash file with the following code:
amixer scontrols
amixer sset 'Master' 50%
Make the Bash file executable using chmod +x filename
In Python, use the following:
import os
os.system("...
- 739
4
votes
arecord: main:722: audio open error: No such file or directory
Here is a solution you might find helpful:
arecord -D hw:2,0 -d 5 -f cd test.wav -c 1
D option specifies recording device. Since this specific test mic is on “card 2”, “device 0”, the value is “hw:2,0”...
4
votes
Accepted
How to use both USB Mic (in) and on-board sound (out)
adding an 'asymmetrical' ALSA device worked:
change the contents of /etc/asound.conf and ~/.asoundrc to the following:
pcm.!default {
type asym
playback.pcm "hw:0,0"
capture.pcm "hw:1,1"
...
- 101
4
votes
Possible to route audio directly from usb-audio line-in to same usb audio line-out?
You can use module-loopback functionality of PulseAudio. First identify the names for your sound card's line in and speakers using pactl list sources and pactl list sinks respectively. Then create the ...
- 26.1k
4
votes
Accepted
Pygame and Alsa lib error
Here's a writeup for the hack we came up with in the comment stream:
Most fortunately, we're able to take advantage of the limited scope of this request:
I don't care that sound doesn't work on ...
- 2,814
4
votes
How to increase mic input volume?
Hey so I know that this is late but I actually found a good answer! This is my first post too so I am going to try my best. I found this information on the website PiMyLifeUp. The link to the article ...
- 41
3
votes
How to configure and select USB Microphone
You can make these various settings in your asoundrc, discussed here. You need to set the default input and output in your asoundrc file. Note that when the input and output devices are different, ...
- 891
3
votes
Accepted
Controlling a servo and playing sounds
RPIO, like pigpio, servoblaster, piblaster, and possibly others, use DMA to time the servo pulses. In effect the pulses are hardware timed. In contrast to software PWM they suffer little if any ...
- 66.6k
3
votes
Accepted
How to make PocketSphinx use ALSA? (instead of pulseaudio or jack)
Configure looks for the presence of the development libraries of PulseAudio, Jack and ALSA, in that order.
That is why in answers like this it is mentioned that "...It also appears that ALSA will not ...
- 394
3
votes
How to reorder the index for mic on new Raspbian Jessie for PocketSphinx?
I found a workaround. Instead of re-ordering the index for the mic card, I can change the default mic card with this:
$sudo vi ~/.asoundrc
pcm.usb
{
type hw
card Mic
}
pcm.internal
{
...
- 171
3
votes
arecord: main:722: audio open error: No such file or directory
Use arecord -Dhw:cardID:deviceID test.wav
For MIC
You can find the card ID and device ID of kinobo USB from arecord -l
For Play
The aplay -l ---> will display Card Id and Device ID
$ aplay -Dhw:...
- 117
3
votes
Configuring audio to produce balanced mono output
Sadly, I don't think this is going to work the way you think it's going to work.
Balanced cabling is effective at minimising noise induced along the length of the cable. If there's an almighty ...
- 10.6k
3
votes
Configuring audio to produce balanced mono output
Exactly the same device definition works for playback:
pcm.fake_balanced {
type route
slave.pcm "hw:0" # or whatever
ttable [ [ 1 -1 ] ]
}
Put it into your ~/.asoundrc or into the ...
- 561
3
votes
Accepted
MPD hangs on song change
I had the same problem on my Pi3B but could fix it by uncommenting "device" option in the "audio_output" block (in my case ALSA) in mpd.conf.
- 46
3
votes
Accepted
I2S DAC device support (kernel drivers?) and noise ("pop", "crackle") on playback
2020-06 update/summary
The MAX98357 does not handle the RPi's I2S output well which causes pops/cracks
root cause is a short high-level interruption of BCLK before LRCLK starts (oscillograms: actual,...
- 123
3
votes
Accepted
What are those ALSA Subdevices and what are they used for?
The subdevices are for multiple audio services usage that would be mixed to input/output.
There are also subdevices that are a part of an input or output
device. There must be at least 1 ...
- 4,185
3
votes
bluealsa: Couldn't acquire D-Bus name: org.bluealsa
Section 3 at the bottom of the installation guide Troubleshooting part:
Couldn't acquire D-Bus name: org.bluealsa
It is not possible to run more than one instance of the BlueALSA
...
- 2,017
2
votes
Accepted
Why am I getting the warning Hardware is initialized using a generic method in alsa setup?
If everything is working ok, I don't think this is anything other than informative. Why do you think it indicates an error?
Not every message spit to console at boot indicates a problem -- in fact, ...
- 55.8k
Only top scored, non community-wiki answers of a minimum length are eligible