Tag: Audio
Dual 40W Audio Power Amplifier with Mute
The stereo audio amplifier project shown here is capable of delivering typically 40W per channel continuous average output power into an 8Ω load with less than 0.1% (THD+N). The project is built using an LM4766 chip from Texas Instruments, The performance of the LM4766, utilizing its...
Continue ReadingSparkFun’s Qwiic Tsunami Super WAV Trigger
Qwiic Tsunami Super WAV Trigger is a powerful polyphonic embedded audio player designed by SparkFun in collaboration with James Robertson's robertsonics. The super powerful audio board is capable of producing high-quality audio. The audio board is "polyphonic," in contrast to most...
Continue ReadingPICO DSP is Compact Arduino-Compatible ESP32 Board for Digital Signal Processing Applications
Since the introduction of the ESP32, the ESP32 audio development boards have endeared to the hearts of both hobbyists and electronics design experts. Recently, Ohmic Electronics is crowdfunding a new Arduino-compatible ESP32-based development board. The PICO DSP is an open-source...
Continue ReadingAnalog Style VU Meter on OLED Display – Arduino Compatible
This is an analog-style VU meter on a 0.96″ OLED Display. The project has a 0.96″ OLED display, Atmega328 Microcontroller, 3.5 mm audio EP socket for audio signal input. This Arduino compatible hardware can be program using Arduino IDE. Operating Supply 5V DC. Analog Style VU Meter...
Continue ReadingLow 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...
Continue Reading5 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. The project was built using TDA7491LP13TR from ST. The low profile PCB design can fit in a small area, operating power supply 9-12V DC, Project supports single-ended or...
Continue ReadingThis RF Listener Lets You Hear The RF Sources!
Have you heard about RF listeners earlier? If not, Maker Wolf has designed an RF listener that lets you hear the RF sources. When we look at the RF receivers, it usually singles out a particular frequency and decodes it. But in this project, the handheld device takes a range of...
Continue ReadingStereo 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). The circuit presented here is a differential amplifier intended to receive balanced line inputs in...
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