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    niconiconi (niconiconi@mk.absturztau.be)'s status on Sunday, 14-Jul-2024 18:38:33 JSTniconiconiniconiconi
    in reply to
    • penguinDJ
    • lamp

    @gentooP@social.mikutter.hachune.net @lamp@kitty.haus "I don't see any hardware implementation but it is doable in a daw."It's truly the dark age of analog electronics... It's called Automatic Gain Control circuit, was invented 100 years ago, and was the basic circuit found in all analog radio receivers and TVs, so its hardware implementation is well-known and described in all books about radios. One problem though, AGC is usually slow reacting because you don't want a volume that keeps fluctuating. For this particular application it must have a small time constant so it's a balance between how fast and how "flaky" it is. https://en.wikipedia.org/wiki/Automatic_gain_control

    In conversationabout 11 months ago from mk.absturztau.bepermalink

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    1. Domain not in remote thumbnail source whitelist: upload.wikimedia.org
      Automatic gain control
      Automatic gain control (AGC) is a closed-loop feedback regulating circuit in an amplifier or chain of amplifiers, the purpose of which is to maintain a suitable signal amplitude at its output, despite variation of the signal amplitude at the input. The average or peak output signal level is used to dynamically adjust the gain of the amplifiers, enabling the circuit to work satisfactorily with a greater range of input signal levels. It is used in most radio receivers to equalize the average volume (loudness) of different radio stations due to differences in received signal strength, as well as variations in a single station's radio signal due to fading. Without AGC the sound emitted from an AM radio receiver would vary to an extreme extent from a weak to a strong signal; the AGC effectively reduces the volume if the signal is strong and raises it when it is weaker. In a typical receiver the AGC feedback control signal is usually taken from the detector stage and applied to control the gain of the IF or RF amplifier stages. How it works The signal to be gain controlled (the detector output in a radio) goes to a diode...
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