Development of a digital signal processor

Τίτλος

Development of a digital signal processor

Θέμα

Intel 8088 (Microprocessor)--Programming

Signal processing--Digital techniques--Design

Signal processing--Digital techniques--Equipment and supplies

Δημιουργός

Kyriacou, Theocharis

Πηγή

Higher Technical Institute

Το πλήρες κείμενο είναι διαθέσιμο από το Υπουργείο Ενέργειας, Εμπορίου Βιομηχανίας και Τουρισμού.

Εκδότης

Library of Cyprus University of Technology

Ημερομηνία

1996

Συνεισφέρων

Hadjioannou, Soteris

Δικαιώματα

Απαγορεύεται η δημοσίευση ή αναπαραγωγή, ηλεκτρονική ή άλλη χωρίς τη γραπτή συγκατάθεση του δημιουργού και κάτοχου των πνευματικών δικαιωμάτων.

Μορφή

pdf

Γλώσσα

en

Τύπος

text

Αναγνωριστικό

EED0569

Σύνοψη

Since the very beginning of the technology man tries to invent something to be able to thing and analyze things the way he does. Today the most recent of his achievements which comes close to his aim is the microprocessor. The microprocessor can do almost anything from the most boring and repetitive jobs to the most intelligent and precise ones, and most of all, it can do them fast, much faster than his creator.
So if the microprocessor can work at so great speed and accuracy it can be assigned tasks that would otherwise be almost impossible for man to complete due to the amount of time and dedication needed. One such task is digital signal processing.
By digital signal processing we mean the processing of an analog signal by digital means. But this is not as simple as it sounds. To do this normally the analog signal must be sampled first, i.e. samples of the voltage level of the signal are taken at very short intervals, while the signal occurs, and stored in memory. Once this is done, operations can be applied on each individual sample, treated separately or according to the nature of the
samples acquired shortly before or after it. But just that would not be enough. The analog signal can also be output, either the original as it was sampled or the new processed image.
It is obvious of course that speed and precision plays a major role in this operations since the samples acquired per second or the sampling rate as it is termed determines the quality of the copy of the signal recorded compared with the original. So if the analog signal is changing fast we have to sample it at an even faster rare to be able to reproduce it without significant distortion. Speed also affects both the time taken to reproduce the analog signal and mote importantly the time of processing, since this requires examining, comparing, calculating and changing each single sample taken. All these operations are controlled by the microprocessor.
Nowadays digital signal processing is forming a new separate science. Almost all analog signal conditioning devices such as filters, amplifiers, tuners e.t.c. are now being replaced by digital signal processors. This replacement provides most of all the great advantage of reducing space. But digital signal processors can do more, they can provide logic, which brings us then to voice recognition or even image recognition. What would we then call 'impossible'?