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Eecs 1520- Test 2 Exam Questions With 100% Correct Answers | Latest Version 2025/2026.

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Eecs 1520- Test 2 Exam Questions With 100% Correct Answers | Latest Version 2025/2026.

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Institution EECS 1520

Course EECS 1520

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A microphone is a... - ANS Transducer, converting audio (sound waves) into an electric signal Ways of creating digital audio: - ANS Sampling and synthesis Amplitude (a) - ANS related to intensity Frequency (f) - ANS related to perceived pitch Phase (theta) - ANS can depend on the relative location of the sound Period is measured in... - ANS Hz or cycles/second Digitizing sound involves... - ANS Taking samples (measurements) at a fixed rate (sampling rate) and recording them Too fast sampling rate means... - ANS large audio file 2 | Page @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED Too slow sampling rate... - ANS inaccurate audio file Nyquist Shannon - ANS sample interval is less than/equal to half of the period Bit depth - ANS the number of bits of information in each sample higher bit depth means... - ANS more accurate sample bit rate - ANS the number of bits that are conveyed or processed per unit of time higher bit rate means... - ANS better quality, larger file FLAC (Free Lossless Audio Codec) - ANS Lossless, compression ratio 62%, used for archiving high quality audio, uses Hoffman and run-length encoding MP3 (Moving Picture Experts Group Layer 3 Audio) - ANS Lossy, compression ratio 13%, popular with most mobile devices, uses psychoacoustics and Huffman encoding and lower bit rates AAC (Advanced Audio Coding) - ANS Lossy, compression ratio of 14%, popular with Apple devices/most smartphones, uses psychoacoustic, Huffman and lower bit rates Colour is typically represented using... - ANS RGB colour model ( other color models are CMYK, HSL and YUV) Colours betwe

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EECS 1520- TEST 2 EXAM QUESTIONS
WITH 100% CORRECT ANSWERS |
LATEST VERSION 2025/2026.

A microphone is a... - ANS Transducer, converting audio (sound waves) into an electric signal

Ways of creating digital audio: - ANS Sampling and synthesis

Amplitude (a) - ANS related to intensity

Frequency (f) - ANS related to perceived pitch

Phase (theta) - ANS can depend on the relative location of the sound

Period is measured in... - ANS Hz or cycles/second

Digitizing sound involves... - ANS Taking samples (measurements) at a fixed rate (sampling
rate) and recording them

Too fast sampling rate means... - ANS large audio file

1 | Page @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED

, Too slow sampling rate... - ANS inaccurate audio file

Nyquist Shannon - ANS sample interval is less than/equal to half of the period

Bit depth - ANS the number of bits of information in each sample

higher bit depth means... - ANS more accurate sample

bit rate - ANS the number of bits that are conveyed or processed per unit of time

higher bit rate means... - ANS better quality, larger file

FLAC (Free Lossless Audio Codec) - ANS Lossless, compression ratio 62%, used for archiving
high quality audio, uses Hoffman and run-length encoding

MP3 (Moving Picture Experts Group Layer 3 Audio) - ANS Lossy, compression ratio 13%,
popular with most mobile devices, uses psychoacoustics and Huffman encoding and lower bit
rates

AAC (Advanced Audio Coding) - ANS Lossy, compression ratio of 14%, popular with Apple
devices/most smartphones, uses psychoacoustic, Huffman and lower bit rates

Colour is typically represented using... - ANS RGB colour model ( other color models are
CMYK, HSL and YUV)

Colours between red, green, blue can be represented by numbers between... - ANS 0 and
255

2 | Page @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED

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Number of pages: 9
Written in: 2025/2026
Type: Exam (elaborations)
Contains: Questions & answers

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