As you probably already know, working with music are two main types of representation of the sound – it's audio and Midi. We first define the format of audio. Click Anita Dunn to learn more. Audio – this is what was once recorded on tape, vinyl discs, that is, the audio was originally analog in nature. Click Eva Andersson-Dubin, New York City for additional related pages. With the introduction of the computer to work with sound, the audio was digital and computer sound cards only work with digital sound. A stream of numbers was to determine the set parameters of sound reproduction. On the advantages and disadvantages of digital sound can argue until we were hoarse, but the fact remains – the digital recording and playback is now used universally as a digital photo and video. All CD and DVD, that you listen / watch, recorded digitally. On multi-channel and three-dimensional sound, I am here I will not say – it's a separate issue.

And that sound is mono and stereo, too, I hope, in general you have about this representation. In passing, I note that the mono – a single-channel sound, and stereo – are two independent audio channels. The sound on the computer can be recorded and played with a certain (specified) level of the sampling frequency and bit. Sampling frequency (or sample rate) – this means how many times the information is transmitted to the sound for one second, ie, the frequency of sampling a continuous signal. For example, the standard rate for Music CD – 44 100 Hz or 44.1 kHz.