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Audio level meter circuit - VU Level Meter
https://www.circuitstoday.com/audio-level-meter-circuit
A simple and low cost audio level meter circuit that can be used to measure the audio level of your sound source.This circuit is a valuable tool for …
Automatic Audio Leveling Circuit Makes Scanning More …
https://hackaday.com/2014/06/29/automatic-audio-leveling-circuit-makes-scanning-more-fun/
Alan’s circuit is essentially an attenuator. It takes speaker level audio in (exactly what you’d have in a desktop scanner) and outputs a limited …
Audio Limiter Circuit - ElectroSchematics.com
https://www.electroschematics.com/audio-limiter-circuit-schematic/
This audio limiter circuit is easy to build, works with BA741 8pins or 4pins so pay attention and uses a symmetrical power supply. When the audio input level is between 20mV and 20V the output will be a constant 25mV signal. Audio …
#157: Circuit fun: Automatic audio leveling circuit ...
https://www.youtube.com/watch?v=1h0FZJYXQ_w
This video presents a simple automatic audio volume leveling circuit. The application that prompted this is a police/fire/emergency scanner. Often times, d...
Audio Level Indicator Circuit Diagram using LM339 ...
https://electronicsarea.com/audio-level-indicator-using-lm339/
How the audio level indicator works? The circuit has three exits. Each of them is connected to an LED through a limiting resistor. The green LED lights first when the signal voltage is low, then the yellow LED for medium signal levels, and when the signal level is higher, the red LED lights. An LM339 integrated circuit is used to achieve our goal.
Audio Signal Leveler (Compressor) and VOX/Squelch Controller
http://www.bobsamerica.com/leveler.html
an "Audio Leveler." You drive the input to more than 3 volts of audio and the output will always be (about) 0.77 V RMS. The labels in the schematic explain what the circuit is doing. NOTE: The VOX and Compressor circuits are fed through double-throw toggles so they can be enabled or bypassed...see front panel controls.
How to make Audio Level Indicator - Circuits DIY
https://circuits-diy.com/how-to-make-audio-level-indicator-vu-meter-using-lm3914-ic/
An Audio Level Indicator (VU meter) or a volume unit meter, are electronic devices that display the intensity of any Input audio signal, usually in musical pieces of equipment (Drum sets, mic, electric guitars, amps, speakers, etc.). More specifically, it …
AVC Automatic Volume Control Circuit - ElectroSchematics.com
https://www.electroschematics.com/automatic-volume-control/
The circuit is used to automatically control the volume levels of cassette recorders, audio tape recorders, amplifiers or radio devices. The AVC circuit works this way: the FET (t1) is used as a variable resistor. The resistance between the drain and source of T1 can be between 150Ω and infinite.
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