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US3518375A - Voice override circuit - Google Patents
https://patents.google.com/patent/US3518375A/en
Voice override and amplitude control circuit - CHAPPLE ...
https://www.freepatentsonline.com/4881123.html
An audio system having a voice override and voice amplification control circuitry is provided. The system provides high quality music to a listener through a set of headphones and includes a microphone and a foot operated switch to allow a user to override the music signal to communicate with the listener.
How to design a basic overdrive pedal circuit - Wampler …
https://www.wamplerpedals.com/blog/uncategorized/2020/05/how-to-design-a-basic-overdrive-pedal-circuit/
Best Audio Amplifier Circuit - Engineering Projects
https://bestengineeringprojects.com/best-audio-amplifier-circuit/
Connect all the component as shown in circuit diagram. Audio input connector (CON3) and variable resistor VR 1 fit on the front panel of box. Variable resistor VR 2 should be adjusted to about 11Ω. Enclosure the complete circuit in small box and connect the primary winding to mains supply. PARTS LIST OF BEST AUDIO AMPLIFIER CIRCUIT
Switching Controlled by an Audio Signal | Radio Design Labs
https://www.rdlnet.com/blog/tips/switching-controlled-by-an-audio-signal/
RDL ST-ACR Series Audio Controlled Relays are used in any application where an audio signal must be used to create either a relay closure or Open-Collector output to control another piece of equipment or a circuit. Common applications include: Juke Box overrides Background Music AN-2024; Silence or “Dead Air” Sensor in broadcast environments
How to: Jukebox Override Background Music | Radio Design Labs
https://www.rdlnet.com/blog/tips/how-to-jukebox-overrides-background-music/
Switching Controlled by an Audio Signal February 27, 2013. RDL ST-ACR Series Audio Controlled Relays are used in any application where an audio signal must be used to create either a relay closure or Open-Collector output to control another piece of equipment or a circuit.
Muting Circuits For Audio
https://www.sound-au.com/articles/muting.html
The audio detector is a fairly critical part of the circuit, as it needs to be able to detect even quiet speech and handle loud speech equally well. This isn't especially difficult, but the circuitry required is not described here, because the article is more about covering applications and ideas, rather than complete circuits.
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