Analog to Digital Converter (or simply put ADC, A/D or A to D) is that device which transforms analog audio signals into digital form / data. The reverse operation of this process is made by a Digital to Analog Converter (DAC). An Analog to Digital Converter is one of the most used devices in today music production industry since the computers are the core of today recording and production studios. Once converted into a digital form, digital audio signals can be processed in a lot of ways, the only limit being the software and the actual music production software solutions can reach the sky.
44100 or 44.100 hz or 44,100 hz or 44.1 kHz is the most common sampling frequency or sampling rate used because it is the sampling rate of the Compact Discs (CDs). Analog audio signal is recorded by sampling ub 44.1 kHz or 44,100 times per second and the samples reconstruct audio signal on playback. “Hz” is the abbreviation for hertz meaning, roughly said, samples pe second.