Audio Projects
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.
10W Class-D Stereo Audio Amplifier with Mute, Shutdown and Four Gain Settings
This is a Class-D Stereo audio amplifier project that provides 10W stereo output.
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.
Analog Style VU Meter on OLED Display – Arduino Compatible
This is an analog-style VU meter on a 0.96″ OLED Display.
IR Remote Controlled Motorized Potentiometer – Arduino Compatible
This is an Infrared Remote controlled motorized potentiometer controller.
Low Voltage Microphone Preamplifier with Variable Compression and Noise Canceling
This is a complete microphone signal conditioning project.
5 W + 5 W Dual BTL Class-D Audio Amplifier
The project described here is a high-efficiency dual BTL class-D audio amplifier with single supply operations.
Microphone Preamplifier – Sound Sensor
This is an easy to construct dual-stage microphone pre-amplifier.
Stereo Balanced to Unbalanced Audio Converter
The primary role of this project is to convert a differential input audio signal into a single-ended output signal while rejecting noise that is common to both inputs (common-mode noise).
3W Stereo Differential Input CLASS-D Audio Amplifier with UP/DOWN Volume
The circuit presented here is a 3W stereo audio amplifier with memory UP/DOWN volume control.
Audio-Balanced Line Driver – Unbalanced Audio to Balanced Audio Converter
This audio-balanced line driver project enables to drive hundreds of feet in length of cables without becoming unstable The project is based on the THAT1646 chip, which is a new generation monolithic differential line driver that offers improved performance over conventional cross-coupled designs.
Headphone Amplifier For DAC Converter
This is a headphone amplifier project for audio digital-to-analog converters (DACs) with differential voltage outputs.