30-06-2012, 04:17 PM
Digital Signal Processing
What is DSP?
Digital Signal Processing – The processing or manipulation of signals using digital techniques.
What is DSP Used For?
…And much more!
DSP is one of the most powerful technologies that will shape science and engineering in the 21st century.
In general a signal can be a function of time, distance, position , temperature, frequency or any other independent variable.
Digital signal :- it is a special form of discrete time signal which is discrete in time and amplitude.
A digital signal is acquired by representing the sampled analog value into a finite set of values (quantization).
These signals are called digital because the samples are represented by digits.
DSP is nothing but application of mathematical operations to digital signals.
ADC (Analog to Digital Converter) : this block is used to convert analog signal into digital form. This is required because digital signal processor accepts the signal which is digital in nature.
DSP processes input signal digitally. In a simple language processing of input signal means modifying the signal as per requirement. For this purpose DSP processors like TMS 320 can be used.
DAC( Digital to Analog Converter):
- the output of signal processor is digital in nature but the required final output is analog.
So convert Digital Signal into Analog Signal DAC is used.
General Introduction (1)
Signal implies the transmission of a message
During transmission the message may undergo transformations that alters it.
Radio signals are a good example.
The original sounds experience a series of transformations as they make their way to the ears of the listener.
General Introduction (2)
An abbreviated sequence is :
1. Sound is converted into electrical signals
2. Electrical signals are converted into radio waves
3. Radio waves are reflected (multiple times) by layers of the ionosphere
before reaching the receiving antenna
4. Radio waves are converted back into electricity
5. Electrical signals are transformed into sound
What is DSP?
Digital Signal Processing – The processing or manipulation of signals using digital techniques.
What is DSP Used For?
…And much more!
DSP is one of the most powerful technologies that will shape science and engineering in the 21st century.
In general a signal can be a function of time, distance, position , temperature, frequency or any other independent variable.
Digital signal :- it is a special form of discrete time signal which is discrete in time and amplitude.
A digital signal is acquired by representing the sampled analog value into a finite set of values (quantization).
These signals are called digital because the samples are represented by digits.
DSP is nothing but application of mathematical operations to digital signals.
ADC (Analog to Digital Converter) : this block is used to convert analog signal into digital form. This is required because digital signal processor accepts the signal which is digital in nature.
DSP processes input signal digitally. In a simple language processing of input signal means modifying the signal as per requirement. For this purpose DSP processors like TMS 320 can be used.
DAC( Digital to Analog Converter):
- the output of signal processor is digital in nature but the required final output is analog.
So convert Digital Signal into Analog Signal DAC is used.
General Introduction (1)
Signal implies the transmission of a message
During transmission the message may undergo transformations that alters it.
Radio signals are a good example.
The original sounds experience a series of transformations as they make their way to the ears of the listener.
General Introduction (2)
An abbreviated sequence is :
1. Sound is converted into electrical signals
2. Electrical signals are converted into radio waves
3. Radio waves are reflected (multiple times) by layers of the ionosphere
before reaching the receiving antenna
4. Radio waves are converted back into electricity
5. Electrical signals are transformed into sound