What is the difference between an analog and a digital recording system?
Today, several companies offer wireless recording systems, which work on the basis of analog data transmission. In these cases, analog biological signals are multiplexed into a single analog signal and then transmitted in this analog form to the receiver. At the receiver they are demultiplexed. To store the data the demultiplexed signals are processed by a conventional recording system which amplifies, and filter, then digitizes and stores the digital data on a computer. In contrast, the digital system of the DT converts the wideband analog biological signals into digital data on the subject. The digital data are serialized (copied onto one serial data channel), transmitted and stored exactly as they were acquired. The main disadvantage of analog transmission is that any fading of the signal between transmitter and receiver will impact (corrupt) the recorded signal amplitudes and frequencies. The undesirable consequence of this is the hard to avoid misinterpretation of biological signa
