Digital
Signal Processors (DSP)
•DSP
stands for digital
signal processor.
•It is
a type of microcontroller.
•DSP
are use for measuring, filtering and/or compress digital or analogue signal.
•Signal
processing means analysis and manipulation of signal.
•Signal
processing is done to obtained clear and pure signal.
•Signal
processing is done via computer or Application Specific Integrated Circuits (ASCIs), Field Programmable Gate Array (FPGA) or Digital Signal Processor (DSP).
•DSP
are useful in oscilloscope, barcode scanner, mobile phone, printers etc.
•DSP
are fast and use for real time applications.
•DSP
uses Harvard
architecture, pipelining, replication, on chip memory/cache etc.
•DSP
is capable of doing millions of floating point operation per
second.
•The
analogue signal go into antialiasing
filter.
•Antialiasing
filter will remove
low frequency signal from
high frequency signal.
•Then
the filtered signal go to sample
and hold device.
•There
is a capacitor and a switch which turn on and off and sampling is occurred.
•Both
input and output of DSP is in digital
form.
•Sampling
is done at the input of DSP and the analogue to digital converter converts analogue signal to digital.
•Then
DSP measure, filter and/or compress digital or analogue signal.
•After
that output of DSP is in digital form so reconstruction is needed digital to analogue
converter converts digital
signal into analogue.
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