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Amazon.com: led vu meter
https://www.amazon.com/led-vu-meter/s?k=led+vu+meter
VU Meter - Audio Level - Apps on Google Play
https://play.google.com/store/apps/details?id=com.bti.vuMeter&hl=en_US&gl=US
Realistic vintage HiFi audio LED VU level meter. It shows relative loudness in decibels of the ambient sound, music or your voice. It features fall time selection, alternative VFD or …
Simple 20 LED Vu Meter Using LM3915 : 6 Steps - …
https://www.instructables.com/Simple-20-LED-Vu-Meter-Using-LM3915/
The VU meter is a circuit for an indicator of the audio signal strength. The VU meter circuit is usually applied to an amplifier circuit so that the level of audio power can be determined by certain parameter settings which will be displayed in the form of light from the LED.
4QD-TEC: Audio LED VU meter
https://www.4qdtec.com/LED/avu.html
Audio LED VU meter. Audio level meter circuits are fairly often requested. Here is one. The circuit was designed to work with an audio power amplifier which operated off +18v-0v-18v power rails. The actual voltage used is not too critical except that the feedback is referred to the LED chain which itself is anchored to a +12v rail, hence the ...
LED Audio VU Meter
https://www.sound-au.com/project60.htm
The LED meter is simpler and smaller than its analogue counterpart, and is very common in audio equipment. This version is based on a National Semiconductor IC, and uses the logarithmic version. Each LED operates with a 3dB difference from the previous one, and a jumper is provided to allow dot or bar mode.
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