Audio Electronics deals with the circuits that are designed for converting sound/pressure wave signals to electrical signals, or vise versa. These circuits are used to processes and manipulate audio signals to design different types of audio amplifiers, audio mixers, frequency controllers etc..
This section consists of a huge collection of audio circuits with schematics and detailed explanation, to help you build Audio projects and use them for your Audio designs.
LED VU meters are popular devices, especially for those people who love music. With this device, you can easily look at the level of sound with a glance at the LEDs. if you are thinking about making one for yourself, then rest assured because there is a very popular IC available in the market that can do all the heavy lifting for you and make the building process…
In this project, we are going to build an audio bug using Arduino and NRF24L01. This audio spy bug is highly customizable and can be easily integrated with other devices and systems. The NRF24L01 module allows transmission over specific channel, ensuring that our transmissions remain private up to a level. This device is perfect for…
Recently, we thought of building a simple FM receiver circuit, so, like always, we started googling for possible circuits that can be used to fulfil our requirements, and as expected, we found a lot of circuits on the internet, but the question remains, how good or useful will they be when we put those circuits to the test? Because just like us, we found a lot of…
Do you remember the old classic 8-bit games? Perhaps you enjoyed your leisure time in front of an early home computer or video game system. They were so nostalgic, and every kid in that era loved them. Now they are replaced with modern high-end graphics and game dynamics. Yet many people still love to play those classic games.…
Want to give your project a sense of sound! Then follow along because in this project, we are interfacing a sound sensor to build some interesting projects with it. The KY-038 sound sensor we are using uses a condenser-type microphone to detect sound waves, which gives us a perfect balance of stability and reliability. So in this article, we decided to interface…
Microchip Technology Inc. has introduced the new SAMA7G54 Arm Cortex A7-based MPU that includes both a MIPI CSI-2 camera interface and a traditional parallel camera interface enabling developers to design low-power stereo vision applications with more accurate depth perception. The SAMA7G54 MPU extends this low-power trend into the 1 GHz…
Audio content has come a long way over the past decades, from a classic tube amp to modern-day media players, technological advancements have changed the way digital media is consumed. Among all these innovations, portable media players have become one of the first choices among consumers, because of their vibrant sound quality and long battery life. So how does it work, and…
STMicroelectronics has introduced the TDA7901 automotive amplifier which is a single-chip quad-bridge amplifier in advanced BCD technology integrating a full D/A converter, digital input for direct connection to I2S (or TDM), and powerful MOSFET output stages. The TDA7901 is suited to use in many in-vehicle information (IVI) systems, such as head units, smart…
Bluetooth speaker has now become a pretty popular household gadget that we use on a daily basis. So, for today's article, we thought to design and build our own Bluetooth Speaker. To make things a little more interesting, we have added a strip of WS2812B Neo Pixel RGB LEDs that will be used to visualize the music. In order to make the visualization more responsive, we…
An audio amplifier is an Electronic circuit that amplifies low-power audio signals to a level suitable for driving Loudspeaker. These Amplifiers are used in wireless communications and broadcasting, and in audio equipment of all kinds. There are many classes of Amplifiers and we have previously built a lot of Audio Amplifier circuits ranging from small…
The TDA7294 IC is a popular sound amplifier IC with low cost that has a ton of power handling capacity, 100W to be exact. For this tutorial, we are going to use two of those TDA7294 ICs in a bridge configuration to build an even more powerful amp that can handle up to 170W of RMS power. Throughout this tutorial we will walk you through the…
Most musical concerts nowadays are accompanied by some fancy light shows. Almost all concerts, festivals, and nightclubs have a visual show or effects to match. So, why not build your own music visualizer that reacts to the music or audio? Here's a simple yet effective project to make your very own music/audio visualizer using Arduino Nano, 32x8 Dot Matrix Display…
