dsp

The interface between an analog signal and a digital processor is

• D/A converter

• A/D converter

• modulator

• demodulator

The speech signal is obtained after

• analog to digital conversion

• digital to analog conversion

• modulation

• quantization

DTFT is the representation of

• periodic discrete time signals

• aperiodic discrete time signals

• aperiodic continuous signals

• periodic cintinuous signals

The transforming relations performed by DTFT are

1) linearity

2)modulation

3)shifting

4)convolution

• 1,2 &3 are correct

• 1 & 2 correct

• 1 & 3 correct

• all the four are correct

FFT may be used to calculate

1) DFT

2) IDFT

3) direct Z transform

4) In direct Z transform

• 1,2 & 3 are correct

• 1 & 2 are correct

• 1 & 3 are correct

• all the four are correct

DFT algorithm divides the sequence into

• positive and negative values

• even and odd samples

• upper higher and lower spectrum

• small and large samples

The similarity between the fourier transform and the z transform is that

• both convert frequency spectrum domain to discrete time domain

• both convert discrete time domain to frequency spectrum domain

• both convert analog to digital signal

• both convert digital to analog signal

_______________________is the characteristics of an ideal filter.

• constant gain in passband

• zero gain in stop band

• linear phase response

• all of the above

FIR filters _____________

A) are non-recursive

B)do not adopt any feedback

C) are recursive

D) use feedback

• A & B

• C & D

• A & D

• B & C

Telegraph signals are examples of

• digital signals

• analog signals

• impulse signals

• pulse train