Howtosignalprocessing
- What is meant by linear prediction?
- What is a prediction filter?
- What is the function of prediction filter in Dpcm?
- What is linear prediction error?
What is meant by linear prediction?
Linear prediction is a mathematical operation where future values of a discrete-time signal are estimated as a linear function of previous samples. In digital signal processing, linear prediction is often called linear predictive coding (LPC) and can thus be viewed as a subset of filter theory.
What is a prediction filter?
Predictive filters are a family of estimation techniques. They combine the uncertain prediction from the system's dynamics and the corrupted observation. There are many different predictive filters, each dealing with different types of mathematical represen- tations for random variables and system dynamics.
What is the function of prediction filter in Dpcm?
The DPCM system is suitable for digitalization and transmission of highly correlated signals. This qual- ity of the system is provided by a prediction filter in the negative feedback loop. The prediction filter esti- mates the actual sample value based on one or more previous samples of input (source) signal.
What is linear prediction error?
The prediction error, e(n), can be viewed as the output of the prediction error filter A(z), where. H(z) is the optimal linear predictor. x(n) is the input signal. x ^ ( n ) is the predicted signal.
