Advantages Of DSP Compared To General-purpose Processors

A general-purpose processor like a CPU can execute hundreds of instructions and package more transistors than a DSP. These facts may raise the question of why DSP is the preferred microprocessor for audio, rather than larger and more complex CPUs.

The biggest reason why DSP is used compared to other microprocessors is real-time audio processing. The simplicity of DSP architecture and limited ISA enable DSP to reliably process input digital signals. With this feature, real-time audio performances can apply equalization and filters in real-time without the need for buffering.

The cost-effectiveness of DPS is another important reason why they are used more than general-purpose processors. Unlike other processors that require complex hardware and ISA with hundreds of instructions, DSP uses simpler hardware and ISA with dozens of instructions. This makes DSP easier, cheaper, and faster to manufacture.

Finally, DSP is easier to integrate with electronic devices. Due to the small number of transistors, DSP requires much less power compared to CPU, and is physically smaller and lighter. This allows DSP to be installed in small devices such as Bluetooth headphones without worrying about power and adding too much weight and volume to the device.