Content for Speaker

Speaker

A loudspeaker (or loud-speaker or speaker) is an electroacoustic transducer; a device which converts an electrical audio signal into a corresponding sound. The most widely used type of speaker in the 2010s is the dynamic speaker, invented in 1924 by Edward W. Kellogg and Chester W. Rice. The dynamic speaker operates on the same basic principle as a dynamic microphone, but in reverse, to produce sound from an electrical signal. When an alternating current electrical audio signal is applied to its voice coil, a coil of wire suspended in a circular gap between the poles of a permanent magnet, the coil is forced to move rapidly back and forth due to Faraday's law of induction, which causes a diaphragm (usually conically shaped) attached to the coil to move back and forth, pushing on the air to create sound waves. Besides this most common method, there are several alternative technologies that can be used to convert an electrical signal into sound. The sound source (e.g., a sound recording or a microphone) must be amplified or strengthened with an audio power amplifier before the signal is sent to the speaker.

The Monkey Island (TM) PC-Speaker music player

“- I modified DOSBox to extract the frequency/delay value pairs of the Monkey Island PC-Speaker songs. - I then used Huffman compression to squeeze all music inside an ATtiny85 (512 bytes of RAM, 8 KB of flash) - Once I managed …

Music & Lights Workbench for those new to programming

“Educational - to spark early interest in youngsters in computing, with easy constructions of cool music and light commands. Introduction The Music and Lights Workbench (MLWB) has been designed to introduce anyone new to or not familiar with the subject of …

DIY Electromagnetic Interference Detector

“I’m currently in the process of building my own CNC router. This router will be controlled by an arduino, and will help me in future DIY projects. However, there’s been some issues with the arduino randomly freezing, and …

Talking Clock

“Today, I would like to share how to build a “Talking Clock” based on Adafruit Circuit Playground Express board, which can notify the real time, temperature and light level by voice. The main components are included: 1pcs x Adafruit Circuit …

Arduino Theremin

“Arduino Based Theremin with MOZZI Library and LDR in this post, I have set up one of its example setup which is an LDR-based theremin, which basically is a pulse modulation setup that utilizes LDR as a Sensor. to …

Make a Web-Radio for Less Than $15

“If you like this tutorial, please vote for it here:https://www.instructables.com/contest/audio2020/ So, I decided to do a project I’ve been postponing for a while:A homemade, fully functional web radio, complete with amplifier and …

Arduino-Tamagotchi Project (I Am the Tamagotchi)

“I was bored in quarantine and decided to make an Arduino Tamagotchi. Because I hate a lot of animals I choose myself as the Tamagotchi. First I build my console on a breadboard. The wiring is very simple. There are …

Project  alles

alles

“alles is a many-speaker distributed mesh synthesizer that responds to control signals over WiFi. Each synth supports up to 10 additive sine, saw, pulse/square, noise and triangle oscillators, a Karplus-Strong string implementation, and a full FM stage including support …

Memory Puzzle Alarm Clock

“This is an Alarm Puzzle Clock which means there is a little memory game you have to solve to stop alarm ringing! As a summary, this clock is for who is being snazzy on mornings. It has 3 LEDs which …

ESP8266 Digital Radio

“Digital Radio made just from an ESP8266 and a speaker I wanted a simple, easy to make wifi radio with only an ESP8266 and a speaker. The Code is not mine, but I want to show others how to make …