DSP SAMPLE QUESTIONS

Convey information from one point to another

• Signal

• System

• Signal Processing

• Digital Signal Processing

Described by a function of one or more independent variables. The value of the function (i.e., the dependent variable) can be real-valued scalar quantity a complex-valued quantity or perhaps a vector.

• Signal

• System

• Signal Processing

• Digital SIgnal Processing

These is a type by which process signals to produce a modified or transformed version of the original signal

• Signal

• System

• Signal Processing

• Digital Signal Processing

•defined as a physical device that performs an operation on a signal.

• Signal

• System

• Signal Processing

• Digital Signal Processing

•the operation on or analysis of signals, or measurements of time-varying or spatially varying physical quantities

• Signal

• System

• Signal Processing

• Digital Signal Processing

What does the operation of a system do to a signal?

• Destroys it

• Amplifies it

• Modifies or transforms it

• Outputs an identical signal

Which of the following is true about deterministic signals?

• They are entirely random.

• They can be described with explicit mathematical expressions.

• Their description is too complex for practical use.

• None of the above.

The energy of a signal is finite if:

• Its power is infinite.

• It has a constant amplitude.

• P=0

• It is time-invariant.

A system is said to be causal if:

• It depends only on future inputs.

• It depends on both past and future inputs.

• It depends on present and past inputs only.

• It is time-invariant.

Which of the following is/are a discrete-time signal?

• Continuous speech waveform

• A digital sound recording

• A heart's pulse in real time

• Sunlight heating the sidewalk