Compared with analog signal processing systems, digital signal processing systems based on general-purpose DSP chips have the following advantages:
(1) High precision, strong anti-interference ability and good stability. The accuracy is only affected by the quantization error, that is, the limited word length, the signal-to-noise ratio is high, and the device performance is small. It is less affected by external factors such as temperature and environment.
(2) The programming is convenient, and it is easy to implement complex algorithms (including adaptive algorithms). The DSP chip provides a high-speed computing platform that can realize complex signal processing.
(3) Programmable control, when the function and performance of the system change, there is no need to redesign, assemble, and debug. Such as the realization of different digital filters (low pass, high pass, band pass); radio communication in different working modes in software radio; filters and spectrum analyzers in virtual instruments.
(4) The interface is simple, the electrical characteristics of the system are simple, and the data flow adopts a standard protocol.
(5) Convenient integration.
(6) It can realize functions that cannot be realized by analog processing: linear phase, multi-sampling rate processing, cascading, easy storage, etc.;
(7) Can be used for very low frequency signals.