Digital signal processing Questions & Answers

Digital signal processing Questions & Answers 2 basic steps to convert analog signals into digital code? - CORRECT ANSWER - Sampling and digitization After digital signal processing, what converts the digital signal back into an analog signal before transmitting it to the ear via the receiver (minister loudspeaker in the ear)? - CORRECT ANSWER - Converts the electrical signal back into acoustic energy Digital hearing aids processes the sound in ____ - CORRECT ANSWER - Digital form (so the 0s and 1s so the computer can read it) Explain the conversion of an acoustic signal - CORRECT ANSWER - Analog to digital and digital to analog The acoustic signal that is in the environment and about to be picked up by a microphone, is analog in nature. The mic converts the acoustic signal into electric energy immediately, this is now a digital signal. It is now taken to the loudspeaker, this converts it back to the analog signal that is picked up in the environment. How can the digital code be used? - CORRECT ANSWER - To store, process, and reproduce a signal -represent signal - perform operations on the code - enhance certain features of the signal, reduce or eliminate others - indicate the location of a signal in computer memory How do the number of snapshots take influence the representation of the original wave? - CORRECT ANSWER - The more frequent, the more continuous The few we snapshots taken; the less representation of the original is being produce (also more distorted) How does a hearing aid convert an acoustic signal to electrical - CORRECT ANSWER - The mic is primarily responsible for this In a hearing aid ______ ______ processing takes place - CORRECT ANSWER - Digital signal In a hearing aid, digital signal processing takes place. What filters are used and why? - CORRECT ANSWER - Low pass filters: (in the range of 4,000 - 6,000 hz) we use these to ..