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Tone Detector Circuit (updated 5/2008) - scary-terry.com
http://www.scary-terry.com/more_stuff/tonedet/tonedet.htm
Tone Detector Circuit (updated 5/2008) Purpose: This circuit detects a tone from an audio device such as an MP3 or CD player and can be used to trigger a prop. An example for its use would be a pair of talking heads where you need to trigger a …
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. The main problems with detecting sound are:
Sound Detector Hookup Guide - learn.sparkfun.com
https://learn.sparkfun.com/tutorials/sound-detector-hookup-guide/all
As a purely analog circuit, the Sound Detector isn't limited to strictly being a peripheral for a microcontroller. To illustrate an alternate application, we've wired up a completely analog example. We've tied the envelope output to an LM3916 VU bar-graph LED driver, to make a visual sound level meter. For this application, the Sound Detector is configured with no resistor for …
Sound detector circuit using op-amp 741 - Engineering …
https://bestengineeringprojects.com/sound-detector-circuit-using-op-amp-741/
This circuit called ‘Sound Detector’ is what detects vibrations of the sound waves and amplifies them to be heard distinctly by human ears. As per the design of the sound detector circuit using 741 IC, it works efficiently within the 6 meters limit …
3 Sound activated switch and Detector Circuit with PCB ...
https://www.eleccircuit.com/sound-activated-switch-circuit/
This is Sound activated switch Circuit with PCB using IC-1458 and SCR-C106D. It will work only if the loud is overdue. Ideal for player cameras Or you can bring it to other users. It’s not Fouls, such as You may also be applied to a Burglar alarm circuit effectively, or applied to the alarm clock, when it has sounds high level.
Sensitive Audio Detector | AC Circuits | Electronics Textbook
https://www.allaboutcircuits.com/textbook/experiments/chpt-4/sensitive-audio-detector/
This detector system is extremely sensitive, and any loose wire connections in the circuit will add unwanted noise to the sounds produced by the measured voltage signal. The two diodes connected in parallel with the transformer’s primary winding, along with the series-connected 1 kΩ resistor, work together to “clip” the input voltage to a maximum of about 0.7 volts.
building a sound detector circuit? help? - General ...
https://forum.arduino.cc/t/building-a-sound-detector-circuit-help/283208
At normal audio frequencies, the 10M feedback resistor will dominate the circuit. Resistors R3 & R4 form a voltage divider that places 2.5VDC on the op-amp’s negative input. In this circuit, the op-amp’s negative input is the reference-input, and with no signal 2.5VDC will also appear at the op-amp’s output.
5 circuits of 555 Alarm sound and tone generator ...
https://www.eleccircuit.com/voice-warming-by-ic-555/
Simple Ultrasonic Sound Sensor Alarm Circuit using …
https://www.homemade-circuits.com/ultrasonic-sound-sensor-alarm-circuit/
The detection gain or sensitivity range of the circuit can be set by adjusting the shown 1M preset. When a high frequency sound in the ultrasound range is sensed by the mic, results in a high logic pulse to generate at pin#6 of the IC which is appropriately dimensioned, and rectified by the output configuration consisting of the series 470nF coupling capacitor and the …
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