What are the comparative advantages of digital signal and imitation signal?

First, let's understand these two terms. What is a digital signal? What is an imitation signal? Imitation signal refers to the information indicated by the continuous change of physical quantities, the fluctuation of its signal, or the frequency, or the phase of the continuous change at any time, such as the sound signal broadcast now, or the picture signal, etc. Digital signal means that the value of the fluctuation is discrete, and the amplitude indicates that it is constrained to a finite number of values. Binary code is a kind of digital signal. Binary code is less affected by noise and easy to be processed by digital circuit, so it has been widely used.

The power amplifier with DSP processor is different from the general power amplifier

With DSP processor power amplifier is to point to choose DSP chip, can be taught through the computer, the parameters of each channel (EQ delay points, etc.), it is to be able to pass through the computer is very good handling power amplifier. DSP power amplifier has the function of other power amplifier together; The car environment to form a stacked frequency attenuation, the environment to form an attenuation frequency to add, but also to let the car each horn and ear interval adjustment; DSP power amplifier it can adjust the car physical conditioning defects!

The DSP microprocessor (chip) of DSP power amplifier generally has the following primary characteristics: 1. One multiplication and one addition can be completed in one instruction cycle; 2. Program and data space separation, can visit instructions and data together; 3. The chip has fast RAM, which can be visited in two pieces together through independent data bus; 4. Hardware support with low or no overhead loop and jump; 5. Fast abort processing and hardware I/O support; 6. With multiple hardware address generators operating in a single cycle; 7. Able to perform multiple operations in parallel; 8. Support pipelined operations, enabling finger fetching, decoding, and performance operations to be performed in stacks.

Compared with the general power amplifier, significantly won a lot. General power put can adjust only: gain, concave and convex, cannot connect with computer. And DSP power amplifier can be handled very well through the computer power amplifier. DSP power put has a few big advantage is general power put place to do not have: 1. The module of DSP integrates into amplifier, saved wire cost and wire disturb, still have the device space that saves inside car. 2. The power amplifier with dsp function is very convenient to do automatic frequency division, delay processing, EQ adjustment, so that the chaotic environment of the car can be improved, so that the sound is more resistant to listen to very nice!