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US5822598A - Audio activity detection circuit to increase ...
https://patents.google.com/patent/US5822598A/en#:~:text=An%20activity%20detection%20circuit%20senses%20audio%20signal%20activity,analog%20audio%20circuit%20by%20the%20activity%20detection%20circuit.
Sine Systems, Inc. | DIY Audio Detection Circuit
https://sinesystems.com/support/rfc1/rfc1_diy_audiodetect.shtml
DIY Audio Detection Circuit. This article describes a build-it-yourself project. Sine Systems offers model AFS-3 Audio Failsafe that performs the same function. It is sometimes necessary to monitor the presence or loss of an audio signal using the RFC-1/B. Absence of audio at the transmitter site is an indicator of many types of failure all of ...
Simple Sound Detection Circuit. Detecting Sound
https://picaxe.com/docs/picaxe_sound.pdf
Simple Sound Detection Circuit. Detecting Sound Students often want to use ‘sound’ as an input within electronic projects. Unfortunately sound is not as easy to use as light and temperature, as there is not an instant ‘single component’ solution, as is the case with, for example, an LDR for light or a thermistor for temperature.
US5822598A - Audio activity detection circuit to increase ...
https://patents.google.com/patent/US5822598A/en
The audio amplifier 118R and the audio detection circuit 120R have circuit configurations which are identical to the audio amplifier 118L and the audio detection circuit 120L. However, if only mono audio is being used within the computer, then only one channel of audio detection and audio amplification circuitry would be required, and the OR ...
Circuit-Audio Signal Detector/SwitchHobby Corner
http://www.discovercircuits.com/H-Corner/audiosignal%20detector%20switch.htm
Audio Signal Detector/Switch Circuit designed by David A. Johnson, P.E. For some audio systems it is desirable to have an automatic switch circuit turn on other devices, such as an Amplifier, if an audio signal is detected on one line. The hobby circuit below will activate a transistor switch when it detects at least 50mv peak to peak of an ...
bluetooth - audio jack detection circuit - Electrical ...
https://electronics.stackexchange.com/questions/219489/audio-jack-detection-circuit
The audio-jack has a detection-pin which is connected to GND when the plug is inserted. I am searching for a circuit which turns off the bluetooth-module when the detection pin goes to GND. I am very new to electronics, but nevertheless i tried to create a little schematic and i dont know if it'll work. Here pin 1 of the switch is the detection ...
Sensitive Audio Detector | AC Circuits | Electronics Textbook
https://www.allaboutcircuits.com/textbook/experiments/chpt-4/sensitive-audio-detector/
Detectors are intended to be used for balancing bridge measurement circuits, potentiometric (null-balance) voltmeter circuits, and detect extremely low-amplitude AC (“alternating current”) signals in the audio frequency range. It is a valuable piece of test equipment, especially for the low-budget experimenter without an oscilloscope.
Circuit: Audio Signal Detector Switch__ Circuit designed ...
http://discovercircuits.com/DJ-Circuits/audiodetect1.htm
Audio Signal Detector Switch : This circuit will activate a transistor switch when it detects at least 50mv peak to peak of an audio signal. It could be used to turn on a relay, routing the signal to were it is needed. Click on Drawing Below to view PDF version of Schematic ...
3 Sound activated switch and Detector Circuit with PCB ...
https://www.eleccircuit.com/sound-activated-switch-circuit/
Simple Sound detector circuit using LM324. Today Kunal Banerjee send this project to me. It is a simple Sound detector circuit using LM324. He said ”DEAR SIR, TODAY I HAVE MADE A SOUND DETECTOR CIRCUIT, AND ITS WORKING VERY GOOD AS ITS CAPACITY TO CATCH THE AUDIO IS TOO HIGH AND EASILY DETECT THE SOUND AND THEN IT WORKS. …
Audio Detector Switch - EasyEDA
https://easyeda.com/guest/Audio_Detector_Switch-yYuM4mfxP
Two similar circuits: A) Automatic input selector: If input A is connected to the output, if input B has audio signal the circuit switches to input B. B) Detect audio signal to switch relay on and after some time off again when the music has stopped.
Sound Detector Hookup Guide - learn.sparkfun.com
https://learn.sparkfun.com/tutorials/sound-detector-hookup-guide/all
Providing the Sound Detector with a stable 5V supply, and translating output down to 3.3V will yield better results than powering the detector directly from 3.3V. Finally, listen to the audio output. AC-couple the audio output using a 10 uF electrolytic capacitor, with its + leg to the sound detector, and connect a small speaker or headphone.
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