Internet Radios are defined as a hardware device that receives and plays audio from Internet Radio stations or a user’s PC.

Creating a system that can record video during life threatening events like accidents and acts of vandalism would be important for all concerned. Not only can the recording provide better evidence compared to testimony.

MP3s are lines of programming that is known as MPEG-1 Audio Layer 3. In this format, the complexity is at its highest and is able to compress more information into smaller sizes and produce the best audio quality.

Make your own MP3 player from scratch!

A full open source mp3 player featuring a PicMicro and the mythical decoder VS1011b from VLSI.

This article shows how you may play WAV file created on your PC on an audio embedded system (comprising of a microcontroller, a DAC and a D class amplifier); it will detail the format of WAV files, show how you may extract raw data from them, how you translate it and how you should play it on. PC motherboards have both negative and positive supply voltage, therefore it is relatively easy for them to generate the dual polarity signal required to play a sound in a speaker. But how about audio embedded systems? Their overwhelming majorities (think about the number of mp3 players on the market!) have only positive power supply, so audio data has to be somehow translated to a positive interval.