LED VU Level in 20cents

VU meters were originally designed for the analog world to visualize the average volume of a signal. That’s right, a VU meter displays the average volume or loudness of the signal that’s sent through it.
VU meter shows the average loudness of a signal. It shows the energy and intensity of the music. In mixing, a VU meter shows the actual level of the mix.
One of the purposes of a VU meter is this: it’s healthy to have some kind of “borders” when mixing music. The 0VU can be thought of as the border. But it’s not an absolute limit. It’s fine to go a little bit beyond 0VU, as it doesn’t “hurt” the mix in any way. Go too much, and your mix could suffer. Generally, 2-3VU could be considered as the very limits.
Introduction

LED vu meters use IC and power supply .
At times the easy vu meters are desired that u can hook to speaker wires .
This is a tested design . the post has circuit and a video for ur satisfaction !
history notes
VU meters were originally designed for the analog world to visualize the average volume of a signal. That’s right, a VU meter displays the average volume or loudness of the signal that’s sent through it.
The Bare Min Circuit

The ladder based LED dropper is calibrated for 8v At peak power ...
a resistor can be used to limit in current with value 22E
Hope all will like it
VDO Demo

Here is a demo video , u can improve it
use joule thief etc