What is audio sampling?
Audio sampling will reduce the size of a track of music, while losing the least quality as possible.
Audio sampling works by converting a standard analog, high quality track to a digital wave.
Audio sampling will cut corners in the analog wave, which will reduce quality.
The sampling rate will change, 1 bit appearing the lowest and least memory consuming method, while 16 bit is shown as the best. Often websites show music in a 128 kbps format. The human ear can barely notice the compression when it is compressed to around 196 kbps.
ADC Analog to Digital Conversion
This picture shows when a sound wave is made, by a singer for example, it is fed into a microphone, recording an electrical voltage of an analog sound AAAWWWW YEAH then it is fed into an A to D converter, which converts it from Analog to Digital. The signal is then fed into a digital processor. The digital processor processes the file as binary, including the effects. From the digital processor the file is sent to the hard drive for standard storage. From the hard drive, the file can be sent to external storage devices, such as an iPod. To be played through a speaker, the file passes a D to A converter. The file can then be played again as an analog file.