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US7589586B2 - High frequency signal detection circuit ...
https://patents.google.com/patent/US7589586B2/en
Circuit design Arduino (or general) audio detection - high ...
https://www.tinkercad.com/things/bkI1yb5c6lF-arduino-or-general-audio-detection-high-frequency
Frequency Detection Circuit Design - Electrical ...
https://electronics.stackexchange.com/questions/151471/frequency-detection-circuit-design
Frequency Detection Circuit Design. Bookmark this question. Show activity on this post. I want to create a circuit that can detect audio frequencies and flash RGB LEDs different colors depending on the detected frequency. The frequency range will be from 20 Hz to 12 kHz, after looking at the chart below.
A design guide for implementing audio signal detection
https://www.planetanalog.com/a-design-guide-for-implementing-audio-signal-detection/
D-FlipFlop (DFF). This stores audio detection during the measuring time and outputs it to PIN12 (AudioDetect). Five Minutes No Audio Signal. This detects a five-minute idle time of the audio signal and sets a high level on PIN11 (FiveMinutesNoAudioSignal). Figure 2 The device architecture diagram highlights the major building blocks. Source: Dialog Semiconductor
Audio Frequency Detector - Arduino Project Hub
https://create.arduino.cc/projecthub/lbf20012001/audio-frequency-detector-617856
About this project. This Arduino project displays the approximate frequency of the loudest sound detected by a sound detection module. For this project, the analog output from the sound module detector sends the analog audio signal detected to A0 of the Arduino Uno. The analog signal is sampled and quantized (digitized).
Simple Sound Detection Circuit. Detecting Sound
https://picaxe.com/docs/picaxe_sound.pdf
from a microphone on an oscilloscope). Therefore to detect the highest sound level you need a reference point, and this circuit therefore only looks at the ‘negative going’ part of the waveform. By amplifying the point at which the sound waveform starts to drop back down again, you can identify the highest point of the sound level.
US7714619B2 - High-frequency clock detection circuit ...
https://patents.google.com/patent/US7714619B2/en
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