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raspbian - No sound through 3.5mm jack - Raspberry Pi ...
https://raspberrypi.stackexchange.com/questions/83879/no-sound-through-3-5mm-jack
Right-clicking the volume icon on the desktop taskbar brings up the audio output selector; Command line This command will switch the audio output to HDMI: amixer cset numid=3 2 Here the output is being set to 2, which is HDMI. Setting the output to 1 switches to analogue (headphone jack). The default setting is 0 which is automatic. raspi-config
No sound from 3.5mm jack on a raspberry pi 4 [solved ...
https://forums.raspberrypi.com/viewtopic.php?t=263942
1. use raspi-config -> Advanced Options -> AA pi 4 vedio Output -> disable both 4kp60 and analog (choise the item and save , shutdown) 2. switch the physical hdmi connect to another （there two hdmi interface） power on , play the wav , it's ok I think it's a bug .
Use audio jack as input ? - Raspberry Pi Forums
https://forums.raspberrypi.com/viewtopic.php?t=71018
The plug (in isolation) can be an input or output (which is what your link refers to), but once you attach it to a circuit (like the Raspberry Pi audio output), then the role of the plug is defined by what it's soldered too (an audio output). If you want to add a microphone, the simplest solution is a USB one.
GitHub - talkkonnect/talkkonnect: A Headless Raspberry …
https://github.com/talkkonnect/talkkonnect
Rasperry Pi Zero W and Pi Zero WH (Version 1) will work with a "watered down" version of talkkonnect that uses a lower sampling rate so as not to use up all of the little CPU power provided by the Zero. However the newly released Raspberry Pi Zero Version 2 W is a perfect candidate for talkkonnect, both small and compact.
Raspberry Pi: Running an SDR - Essex Ham
https://www.essexham.co.uk/raspberry-pi-as-an-sdr.html
Open the Pi’s web browser (icon, top left), and go to www.gqrx.dk – Go to the download page and select the Raspberry Pi build. This downloads a compressed file, which you extract into a folder – I opted for the /pi/ folder Then, open the …
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