Sound to RC Servo Driver v2.0 – Arduino Compatible
https://www.electronics-lab.com/project/sound-to-rc-servo-driver-v2-0-arduino-compatible/
The project presented here is made for applications such as Animatronics, Puppeteer, sound-responsive toys, and robotics. The Arduino compatible board consists of LM358 OPAMP, ATMEGA328 microcontroller, microphone, and other components. The project moves the RC servo once receives any kind of sound. The rotation angle depends on the sound level, the higher the sound level […]
Phantom Powered Microphone Preamplifier – Low Noise – Professional Quality
https://www.electronics-lab.com/project/phantom-powered-microphone-preamplifier-low-noise-professional-quality/
The project presented here is a professional quality Phantom powered Microphone pre-amplifier. The project is built using the INA163 chip from TI. The Chip is a very low-noise, low-distortion, monolithic instrumentation amplifier. R2 and R3 provide a current path for a conventional 48V phantom power source for a remotely located microphone. A slide switch SW1 […]
Accurate Acoustic Sensor – Sound Frequency to Voltage Converter
https://www.electronics-lab.com/project/accurate-acoustic-sensor-sound-frequency-to-voltage-converter/
The project presented here is a sensitive sound sensor. The circuit converts sound frequency and outputs DC voltage. The board consists of LM358 OPAMP and LM2907 IC. LM358 is used as a dual-stage microphone preamplifier and LM2907 acts as a frequency to voltage converter. The circuit provides analog voltage output when it detects sound. The […]
Piezo Element Amplifier for Guitar and Violin
https://www.electronics-lab.com/project/piezo-element-amplifier-for-guitar-and-violin/
The board presented here is a preamplifier for contact microphones that are used for amplifying the sound of musical instruments which do not contain electrical pickups, such as guitar and violins. Most contact microphones use a piezo element to convert vibration in the body of the musical instrument to a voltage. The circuit is built […]
Hi-End Microphone Preamplifier with Variable Compression, Noise Gating and Adjustable Gain
https://www.electronics-lab.com/project/hi-end-microphone-preamplifier-with-variable-compression-noise-gating-and-adjustable-gain/
The circuit shown here is a complete microphone signal conditioning system based on a single SSM2166 integrated circuit. Designed primarily for voiceband applications, this integrated circuit provides amplification, RMS detection, limiting, variable compression, and downward expansion. An integral voltage-controlled amplifier (VCA) provides up to 60dB of gain in the signal path with approximately 30kHz bandwidth. […]
Pre-Amplifier for MEMS Microphone
https://www.electronics-lab.com/project/pre-amplifier-for-mems-microphone/
This is a low-cost, small-size audio pre-amplifier for MEMS microphone, OPAMP-based circuit amplifies the low-level analog signal coming from MEMS microphone to the desired level required for the next stage which is an audio amplifier, basically microphone level to line level. Resistor R4 and R7 are used to generate a voltage reference to bias the […]
MEMS Microphone Pre-Amplifier with Compression and Noise Gating – Studio Quality Microphone Pre-Amplifier
https://www.electronics-lab.com/project/mems-microphone-pre-amplifier-with-compression-and-noise-gating-studio-quality-microphone-pre-amplifier/
MEMS Microphones is setting a new performance benchmark across a growing number of industries. These innovative silicon microphones were designed to extend the benefits of the lowest possible self-noise (high SNR) and lowest distortion to an ever-expanding number of applications. The project presented here is a low noise analog MEMS microphone Preamplifier with compression and […]
Low Voltage Microphone Preamplifier with Variable Compression and Noise Canceling
https://www.electronics-lab.com/project/low-voltage-microphone-preamplifier-with-variable-compression-and-noise-canceling/
This is a complete microphone signal conditioning project. Designed primarily for voice-band applications, this project provides amplification, limiting, variable compression, and noise gate. User-adjustable compression ratio, noise gate threshold, and two different fixed gains optimize circuit operation for a variety of applications. This is a complete and flexible solution for conditioning condenser microphones for personal […]
Microphone Preamplifier – Sound Sensor
https://www.electronics-lab.com/project/microphone-preamplifier-sound-sensor/
This is an easy to construct dual-stage microphone pre-amplifier. The project can be used as a sound sensor or microphone pre-amplifier. The 1st op-amp pre-amplify the very low-level signal coming from the condenser microphone and 2nd op-amp provides more boost to the audio signal. The pre-amplifier is an important building block for many audio communication […]
Differential Microphone Pre-Amplifier
https://www.electronics-lab.com/project/differential-microphone-pre-amplifier/
The project shown here is a microphone preamplifier that provides high quality amplification, optimized for use in computers, media and mobile applications. The pre-amplifier provides a differential input stage, making the device particularly effective when layout constraints force the microphone amplifier to be physically remote from the ECM microphone. This project features adjustable gain […]