EEL 4730 Exam s4 Page 6 Mic ustration 12: Complete DSP system low amplitude sign
ID: 3912399 • Letter: E
Question
EEL 4730 Exam s4 Page 6 Mic ustration 12: Complete DSP system low amplitude signal with noise included? h section produces a 35) In illustration 12 which section analyzes the A) E B) A C) G D) C Fourier Spectrum for Mixer adjustment? A) H B) K C) F tion 12 which sections are used to 36) In Ilustration 12 which section is used to D) eliminate aliasing effects? adjust the volume? B) C.J C) H D) C D) G.I 30) In illustration 12 which sections are 37) In Illustration 12 what is the Nyquist responsible for quantization and range? A) D.I B) E.K C) A,G D) B.H frequency of the system? A) 20 Khz B) 40 Khaz C) 80 Khz D) 10 Khz 31) In Illustration 12 which sections give 38) In Illustration 12 what is the maximum correction for residual offset voltages? frequency response of the sytem? A) 10 Khz B) 40 Kh2 C) 80 Khz D) 20 Khz A) D,I B) B.H C) E,K D) F 32) In Illustration 12 which section assures 39) In Illustration 12 which section could be a optimal use of system range? High Pass Filter? A) G B) K C)H D) 1 A) C B) D C) H D) J 33) In Illustration 12 which section is used for 40) In Illustration 12 which section parts are feature extraction? directly controlled by State Machine software?? A) All B) E,F,K C) A,G A) C B) K C) F D) E 34) In Illustration 12 which section prevents D) B.C,D,H,I, signal under-loading? A) D B) K C) H D) IExplanation / Answer
28) B
Microphone is used to produce a low amplitide signal with noise included
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29) C,J --> Low pass Filters.
The easiest way to prevent aliasing isto usa a steep sloped low-pass filter with half the sampling frequency before the conversion.
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30) E,K --> Analog to Digital Converters
Quantization is the process of representing the analog voltage a fixed number of bits.
Analog to digital converters are used for this.
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31) D,I ---> Amplifiers
Amplifiers are used for the amplification of audio signals. They take in the left over offset voltage and amplify them up to the required quantity.
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