What does the DSP not do in a modern DSP radio?

In a modern Digital Signal Processing (DSP) radio, the function that is not typically managed by the DSP is the control of Standing Wave Ratio (SWR). SWR is a measure of how well a load is matched to a transmission line, and it primarily pertains to the physical aspects of antenna systems. Measurement and adjustment of SWR involve considerations related to antenna matching and power transfer efficiency, which are typically handled by separate hardware components rather than the DSP itself.

The DSP is primarily responsible for manipulating and processing signals, including controlling audio frequency, managing data flow, and performing signal processing tasks like demodulation and filtering. By focusing on the digital aspects of signal management, the DSP enhances overall radio performance in terms of audio quality, clarity, and functionality, but it does not directly control parameters like SWR, which are more related to the antenna and transmission line characteristics.