Thursday, 17 December 2020

Digital signal processing


Digital signal processing, digital signal processors (DSPs) take real-world signals such as sound, sound, video, temperature, pressure, or position that are digitized and then mathematically processed as the DSP is designed to perform mathematical functions, such as addition, subtraction, multiplication, and division at great speed.


What is Digital Signal Processor - DSP?

Digital Signal Processor: It is a processor dedicated to analyzing and processing a number of digital signals such as sound, as it has been designed to perform mathematical functions such as adding and subtracting at high speed with minimal power consumption.


Signals need to be processed so that the information they contain can be displayed, analyzed, or converted into another type of signal that may be useful. In the real world, analog devices detect signals such as sound, light, temperature, or pressure.


And it manipulates it where converters, like the analog-to-digital converter, take the real-world signal and convert it into a digital format (1 and 0) where the DSP takes over by capturing and processing the digital information and then feeding the digital information back into it for use in the real world.


It does this in one of two ways, either digitally or in analog format, by passing through a digital-to-analog converter where all of this happens at very high speeds.


Digital signal processing

When a DSP is used in an MP3 player and during the recording phase, the analog audio is entered through a receiver or other source and then this analog signal is converted into a digital signal by an analog-to-digital converter and passed to the (DSP).


The (DSP) executes the (MP3) encoding and saves the file in the memory. During the playback phase, the file is taken from the memory and decoded by the (DSP) and then converted back into an analog signal through the digital to analog converter so that it can be output through the speaker system, A more complex example DSP performs other functions such as volume control, balance, and user interface.


What's inside a DSP?

DSP contains these major components:

  • Program memory: It stores the programs that the DSP will use to process data.
  • Data memory: It stores the information to be processed.
  • Calculation engine: It processes math and program access from program memory and data from data memory.
  • Input or Output: It provides a set of functions for communication with the outside world.


There are a few different parts that make up a successful DSP system from the inputs and outputs, and this is the interface to the physical world and other devices where analog signals are converted to digital, processed, and then converted back to the analog field to interact again with users, and the DSP chip. DSP brain system where all necessary calculations and algorithms are done here.



Contact Us


Email *

Message *