Home TechGuide What is DSP Audio? – Digital Signal Processing

What is DSP Audio? – Digital Signal Processing

Everything Need To Know About DSP Audio System

by protech
DSP Audio System

DSP is a short form standing for digital signal processing. This tech is used in headphones, smartphones, smart speakers, entertainment systems, and more. DSP is a cornerstone of current audio products. In other words, DSP refers to a method of improving the accuracy & reliability of digital-communications. Moreover, DSP operates by clarifying, or standardizing digital signal levels/states. DSP is made for performing math-functions like subtract, add, divide & multiply fast using less power.

Signals need processing so that the data it contains can be shown, analyzed, or changed to another kind of signal that’s useful. DSP chips are available in various sizes, performance points, and prices. Additionally, digital signal processing (DSP) is made to speed up one’s execution of audio-related algorithms with less power consumption. For instance, a smartphone has a DSP which is used to decode MP3-files and more other things. A wireless headphone has DSP which converts Bluetooth-codecs back to analog signals. DSP is found in devices that process audio.

How DSP Has Changed Music Listening:

Digital Signal Processor (DSP) in MP3 Demo

DSPs matter because they are an important part of modern sound equipment. The best quality DSP will offer you a high-quality power effect. These range from on-device equalizers to sound recognition, surround audio capabilities & active noise-cancelation. Furthermore, premium DSPs also need little power thus, they prolong battery life.

DSPs are bundled in with the Bluetooth chip’s abilities in the headphones. Other devices offer DAC, ADC, speaker driving abilities besides DSP on a single chip. For instance, Apple AirPods Pro utilizes DSP to know your ear-canal size. Furthermore, it then changes the earbuds’ performance to improve sound quality.

With the help of a DSP-unit and the best microphone, one can know the output of sound gear in an environment. Furthermore, you can correct the sound output the way you need it automatically.

Key Components Of DSP:

A DSP is made up of a certain component that performs a certain task. Major components include;

  • Program Memory: Helps in storing the programs that will be used by DSP to process data.
  • Compute Engine: This chamber helps in performing math processing. Furthermore, it assists in accessing the program from Program Memory & the data from the data memory.
  • Data Memory: This helps in storing the data which is to be processed
  • Input/Output: This serves a variety of functions that connect to the outside world.

DSP Filters:

DSP filters are used to remove one frequency band from the other. One of the known DSP filters is the Chebyshev filter. It’s known for its primary attribute and speed. Additionally, this filter has a mathematical method, known as z-transform. Moreover, it was made to end certain frequencies & permit others to go through the filter.


DSP algorithm operates on general-purpose computers & digital-signal processors. Moreover, DSP algorithms are also used on purpose-built hardware including application-specific integrated-circuit (ASICs). Other uses of DSP are microprocessors, digital-signal controllers, field-programmable gate-arrays, & stream processors.

There are 5 aspects that vary from every DSP. They include clock frequency, data-bus width, RAM size, I/O voltage, and ROM size. Sound sampling utilizes digital signals & pulse-code modulation for sound reproduction. This is essential to capture sound between frequencies of 20 – 20,000 Hz for people to hear.


DSP is the heart of a digital revolution. It has brought us DVDs, CDs, mobile phones, MP3 players and more other devices. Furthermore, digital signal-processing is more used in our everyday life. It’s important in re-forming analog-signals – digital-signals for more purposes. DSP is used in making 3D sound and to auto optimizing music. Furthermore, it also helps in enabling the future generation of Bluetooth audio-codecs. With all this, there will be a great change in the way we listen to the audio.

Related Articles

Leave a Comment