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LED Sound Level Indicator Circuit - Making Easy Circuits
https://makingcircuits.com/blog/led-sound-level-indicator-circuit/
The sound level indicator circuit can be constructed on a perfboard or if you’re handy, it can be done on a PCB. If you opt for a perfboard, use …
Analogue LED audio level indicators explained
https://www.circuitlib.com/index.php/tutorials/product/116-how-to-design-analogue-led-audio-level-indicators
Every analogue LED audio level indicator is a voltmeter that displays voltage amplitude, as we mentioned in the first section of our article. Therefore, a LED …
How to Make Audio Level Indicator : 4 Steps - Instructables
https://www.instructables.com/How-to-Make-Audio-Level-Indicator/
Audio Level Indicator is a device which shows the level of audio by glowing the leds with respect audio amplitude. In this Instructable , I will Instruct to make your own Audio level indicator with LM3915 IC and some LEDs. We can use colorful LEDs to Indicate Intensity.
How to make Audio Level Indicator - Circuits DIY
https://circuits-diy.com/how-to-make-audio-level-indicator-vu-meter-using-lm3914-ic/
So, In this project, we are going to design a simple Audio Level Indicator (VU meter) using the LM3914N dot/bar display driver IC. LM3914 is an analog controlled LED driver IC, meaning it can control (turn on or off) 10 LEDs by an analog input voltage.
Simple 5 LED Music Level Indicator using a single IC
https://makingcircuits.com/blog/simple-5-led-music-level-indicator-using-single-ic/
Audio meter with LEDs in series Vu drawing with LEDs in series. Additionally you can include a preamp and microphone to illuminate the background audio. Music Level Indicator with preamplifier circuit and an electret microphone: R1 could be from 3.3k in 6 volts to 6.8k in 12 volts. C1 could be 0.1 microFarad or higher.
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