DSP

People's Democratic Republic of Algeria
Higher education and scientific research
University of Bechar
MODULE :
Processeurs des signaux numériques (DSP)
Présenter par :
-
-
-
1MESE.
RELATIONSHIP BETWEEN
MICROPROCESSOR(DSP)
AND DIGITAL SIGNAL.
Année Universitaire :
2020/2021

Chapter 01:
DSP Microprocessor

What’s a CPU?
The CPU Central Processing Unit sometimes called a
processor or a microprocessor is the brain of the PC. It is also
the most expensive component. It costs roughly double the
price of the motherboard.
It plays three major roles: calculation, input/output, and
system adjustment. The task function that can be calculated in
binary number, the input/output function to send and receive
data to and from peripheral devices such as HDD, RAM, and
graphics card, and the function of controlling each peripheral
device and parts that the entire computer operates.
Figure 01. A microprocessor.
What’s a DSP?

DSP processor is a special microprocessor with an
architecture optimized for the operational requirements of
digital signal processing.
It stands for Digital Signal Processing. This is basically any
signal processing performed on a digital signal or information
signal to analyze, measure, and manipulate said signal using
mathematical calculations. DSP aims to modify or enhance the
signal. It is characterized by the representation of discrete
time, discrete frequency, or discrete domain signals.
DSP includes sub-fields such as communication signal
processing, radar signal processing, sensor array processing,
digital image processing, etc.
The main goal of a DSP processor is to measure, filter
and/or compress digital or analog signals. This is done by
converting the signal from a real analog signal to a digital
format. It uses a digital-to-analog converter (DAC) to convert
the signal. However, the required output signal is often
another analog signal in the real world. This also requires a
digital to analog converter.

Figure 02. The DSP Microprocessor chip.
DSP products in everyday life
Let's see what DSP products are around us, there existed
the:
 One-dimensional signal refers to a signal with one axis
representing a signal, and there are voice signals, audio
signals, and communication traffic lights.
 A two-dimensional signal is a signal with two axes
representing the signal, and it is a still image like a
photograph.
 A three-dimensional signal is a signal represented by
three axes, and a video signal is representative.
One-dimensional signal DSP products: smart phones, MP3,
CD players, etc.
Two-dimensional signal DSP products: digital cameras,
camera phones, etc.