Ideal reconstruction filter

1. What is ideal reconstruction filter?
2. What type of filter is used for reconstruction Why?
3. What is reconstruction filter in DSP?
4. What is reconstruction in signal processing?

What is ideal reconstruction filter?

An ideal reconstruction filter is used to construct a smooth analog signal from a sampled signal.

What type of filter is used for reconstruction Why?

The reconstruction filter, at the output of the DAC, is usually a high order Bessel or elliptic filter used to low pass filter the analog output from the DAC.

What is reconstruction filter in DSP?

The reconstruction filter – which is basically a low pass filter – removes all of the high frequency signal above the Nyquist frequency that was induced because of the sampling process, leaving a “smooth” sinusoidal type waveform resembling the signal that was originally sampled.

What is reconstruction in signal processing?

Reconstruction is the process of creating an analog voltage (or current) from samples. A digital-to-analog converter takes a series of binary numbers and recreates the voltage (or current) levels that corresponds to that binary number. Then this signal is filtered by a lowpass filter.