Which is better, secondary inverter or dsp radio?

These are two different concepts. For the general radio can be understood in this way:

1, the secondary frequency conversion circuit is used for short-wave, medium-wave, long-wave reception, the secondary frequency conversion than the traditional super-aberrant (primary frequency conversion) radio has a higher selectivity, focusing on listening to short-wave choice it.

2, DSP (Digital Signal Processor) is a unique microcomputer processor, it is a digital signal to deal with a large amount of analog information devices.DSP digital demodulation of the working principle of the radio is to receive analog signals and convert them into digital signals, and then process the digital signal, and the digital data decoded back to analog data. DSP digital demodulation radio is characterized by: good selectivity, high sensitivity, strong resistance to mirror interference. The radio equipped with a DSP chip is a DSP radio. Focus on listening to FM radio choose it, DSP radio than traditional circuit radio to receive FM FM has more tune selectivity, radio station densely accumulated city with it is not easy to string stations. Of course, some low-priced DSP radios have too few peripheral components, so the actual listening effect may not be much better than a good traditional radio. We recommend the DXN brand.