Sound

In physics, sound is a vibration that typically propagates as an audible wave of pressure, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the reception of such waves and their perception by the brain. Humans can only hear sound waves as distinct pitches when the frequency lies between about 20 Hz and 20 kHz. Sound waves above 20 kHz are known as ultrasound and are not perceptible by humans. Sound waves below 20 Hz are known as infrasound. Different animal species have varying hearing ranges.

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Mr. Speaker - 3D Printed DSP Portable Speaker

“My name is Simon Ashton and I have built many speakers over the years, usually from wood. I got a 3D printer last year and so I wanted to create something that exemplifies the unique freedom of design that 3D …

Point to Point Atari Punk Console One and a Half

“What!?? Another Atari Punk Console build? Wait wait wait people, this one is different, promise. Waaay back in 1982, Forrest Mims, Radio Shack booklet writer and Young Earth Creationist (roll eyes emoji) published the plans to his Stepped Tone Generator …

Project  Rumbler

Rumbler

“This project is just for fun. One of the worst bits about the pandemic – apart from all the illness and death of course – is that with everyone stuck at home, all the advantages of living within cycling distance of central …

Playing MP3’s (and other types) on your ESP32 from an SD Card

“How to play MP3’s and other file formats on your ESP32 from an SD Card. All you need to know to make a simple music player. Code shown in video is below.”

An Arduino based standalone drum kit

“Here is an electronic drum kit where an Arduino Uno does all the sounds. This is achieved without audio hat and without extra storage. Most Arduino based drum kits use the Arduino as input listener and midi controller for a …

Music Reactive Mood Lights

“Back in freshman year (Spring of 2019), I wanted to spruce up my dorm room. I came up with the idea of building my own mood lights which would react to the music I listened to on my headphones. Frankly …

Double Delay Effect

“Simple double delay effect! My goal was to build the most compact, zaniest delay possible using only a handful of components. The result is an enclosure-less, easily-modifieable noise machine with a suprisingly massive sound.”

MIDI Sonar “Theremin”

“This is a musical instrument which uses two sonar distance sensors to control the pitch and quality of the notes. It’s not really a Theremin of course but “Theremin” has become the generic term for instruments played by waving …

EM-Tronic 2020 Mini Synth

“This is the EmTronic mini synth, it’s a super simple Arduino powered noise maker that I have designed to be easy to build and only requires easy to buy parts. This little synth allows you to control frequency, modulation …

ESP8266 MP3 Sound Machine v2

“Last summer, I made an ESP8266 MP3 Sound Machine using ESPHome to play calming sounds when my son goes to sleep. I used ESPHome to develop the firmware so it could communicate with my Home Automation platform, Home Assistant. Well …