The Grove - Loudness Sensor is designed to detect the loudness of environmental sound. Based on amplifier LM2904 and a built-in microphone, it amplifies and filters the high-frequency signal that received from the microphone, and outputs a positive envelope. This will make for Arduino's signal acquisition. The output value depends on the level of the sound input. In order to avoid unnecessary signal disturbances, the input signal will go through two times filtering inside the module. Lastly, there is a screw potentiometer that enables manual adjustments to the output gain.
Features
Grove compatible interface
Wide supply voltage range
Built-in signal filtering
Gain adjustable via screw potentiometer
Comparisons
Details Grove - Sound Sensor (LM358) Grove - Sound Sensor/Noise Detector Grove - Analog Microphone (MEMS)
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Microphone Electret Condenser Microphone Electret Condenser Microphone SiSonic MEMS Microphone
Price $4.90 $5.9 $6.90
Voltage Range 4V - 12V 3.5V - 10V 1.5V - 3.6V
Operating Current 4mA - 5mA / 5mA
Sensitivity -60~-56dBV/Pa -60~-56dBV/Pa -25~-19dBV/Pa
Size of Microphone Medium Medium Small
Amplifier LM358 LM2904 MEMS
Quality of Microphone
What is Grove?
Grove makes it easier to connect, experiment, and simplify the prototyping process. No jumpers or soldering required. We have developed more than 300 Grove modules, covering a wide range of applications that can fulfil a variety of needs. Not only are these open hardware, but we also have open-source software.
Note
For all Grove users (especially beginners), we provide you with the guidance of operation. Please read the instructions through the official website before you using the product.
