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DSP: Digital Signal Processing
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DSP: Digital Signal Processing
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25 Questions

1. A phasor rotating in negative (clockwise) direction

2. Processing of signals by digital means

3. Use only the current and past input samples to calculate the current output sample; -no feedback -non recursive filters

4. A phenomenon of sinusoids changing frequency during sampling; sinusoid assumes a frequency other than its own

5. Varying quantity that is a function of time; time is continuous - then the value of the signal can be found at any point in time; - not discrete

6. Radar - Sonar - Data Communication

7. Occur frequently in nature - sound waves - electromagnetic radiation - any type of periodic waveform can be constructed from this signal

8. The conversion of analog or continuous signals to digital or discrete signals - referred to as analog-to-digital conversion - value of signal is sampled at discrete time intervals; time intervals are usually uniform

9. Involves music - speech generation - speech recognition

10. Refers to what we are familiar with as the signal itself - with amplitude values plotted against time values

11. Uses a relatively low frequency message signal to modulate or vary the frequency of a relatively high frequency carrier signal

12. DSP Applications: - radar and sonar - oil exploration - space exploration - _______

13. Used for two general purposes: (1) separation of signals that have been combined - and (2) restoration of signals that have been distorted in some way.

14. A projection onto real axis

15. Imax-Imin / 2^n - 1

16. Graphical representation of the frequency content of a signal - allows us to quickly and easily see the relationship between different frequency components and their amplitudes

17. Means that sample number zero has a value of one - while all other samples have a value of zero -delta function is frequently called the unit impulse.

18. Waveform is symmetrical about the origin or f(x) = -f(-x); - Sine is this function - only sine terms and no constant term.

19. Represented mathematically by an indexed sequence of numbers

20. Measurement at regular intervals of the amplitude of a varying waveform (in order to convert it to digital form)

21. Uses multiplexing - compressions - and echo control

22. Imax-Imin /4*( 2^n - 1)

23. A formal mathematical operation - takes two signals and produces a third signal

24. Echo Location uses: radar - sonar - _______

25. The negative half cycle of the function waveform is the same shape as the positive half - except inverted - Both sine and cosine functions have this - Functions with this have only odd harmonics.

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