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audio - noise on the analog jack shadowing the RPi ...
https://raspberrypi.stackexchange.com/questions/26726/noise-on-the-analog-jack-shadowing-the-rpi-activity#:~:text=There%20are%20several%20issues%20relating%20to%20this%20noise.,and%20the%20active%20system%20you%20have%20in%20place.
audio - noise on the analog jack shadowing the RPi ...
https://raspberrypi.stackexchange.com/questions/26726/noise-on-the-analog-jack-shadowing-the-rpi-activity
a power supply unit, try another one or a filter as @Brendon suggested. peripheral devices such as wifi stick, USB HDD, flash drives, etc. Try to plug them in through usb extension cable, not directly. overclocking might add to this effect. Playing audio through USB/HDMI will definitely help. More info: http://www.howtoeverything.net/linux/raspberry-pi/sound-distortions …
Get better sound from your Raspberry Pi by replacing its ...
https://www.deviceplus.com/raspberry-pi/get-better-sound-from-your-raspberry-pi-by-replacing-its-analogue-audio-output/
When you’re asked to reboot the Raspberry Pi, select “yes” and then run the script again. You’ll now be asked to test the audio. The easiest way to do this is to plug some powered speakers or some headphones into the 3.5mm stereo socket on the I2S Stereo Decoder. You should hear the words “front left” and “front right” on each side, loud and clear.
Popping noise on analog output (solved) - Raspberry Pi Forums
https://forums.raspberrypi.com/viewtopic.php?t=35085
The sound is produced by pulse width modulating a signal. The zero level is at a DC potential of 3V3 / 2 = 1.65V. When the sound system is turned off, that level will either decrease to 0V or increase to 3V3 again. Another possible cause is the last sample being kept as level.
raspbian - Analog sound trouble Raspberry Pi - Stack …
https://stackoverflow.com/questions/18802427/analog-sound-trouble-raspberry-pi
By default it is in auto mode, which means if HDMI is connected and EDID reports audio support, then it uses HDMI, otherwise analogue (headphone jack). (See issue ). omxplayer -o local or omxplayer -o hdmi can be used to override this. That's why omxplayer can give different results than other players like mpg123. Share answered Dec 18 '16 at 20:53
Popping noise on analog output (solved) - Raspberry Pi
https://forums.raspberrypi.com/viewtopic.php?p=303141
You really need to analyse the whole file to do that. It's easy to increase the gain during a quiet bit, and then have the audio blaring (and likely clipping/distorting) when the
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