SUBJECTS
|
BROWSE
|
CAREER CENTER
|
POPULAR
|
JOIN
|
LOGIN
Business Skills
|
Soft Skills
|
Basic Literacy
|
Certifications
About
|
Help
|
Privacy
|
Terms
|
Email
Search
Test your basic knowledge |
Digital Audio
Start Test
Study First
Subject
:
engineering
Instructions:
Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can
study here
.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.
This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. Sample Rate x Bit Depth x # of Channels
Harry Nyquist
Harmonic Content
Lossless
Non -Compressed Audio Data Rate Formula
2. Psychoacoustic model of data reduction used for general audio compression that aims to transmit only features perceptible to the human ear; Useful for mastering streaming media
Joseph Fourier
Perceptual Coding
MONO
Intensity
3. Built into DAWs; Bits are added when signals are mixed together to avoid clipping
CobraNet
RMS
TOSLINK
Headroom Bits
4. 4.38 GB; SS/SL
CobraNet
Sampling (Samples)
Direct Stream Digital
DVD-5
5. Allowance of noise floor below that which is required for the final product
Noise Shaping
Exponent
Acoustics
Footroom
6. Anytime bit depth is reduced the gap gets bigger so more dithering is required
Redither
Nyquist Frequency
Peak Level
Pad Head & Tail
7. Based on psychoacoustics - these are the basis of frequency analysis for a perceptual codec;
Subbands
Speed of Sound
Perceptual Coding
CobraNet
8. ADPCM; Pulse code modulation that produces a digital signal with a lower bit rate than standard PCM; Records only the difference between samples
Adaptive Pulse Code Modulation
DVD-18
Spectrum Multiplication
Significand
9. HD Audio format; Lossless Compression; 24- bit/96 kHz; 5.1 Surround or 24- bit / 192 kHz stereo sound
DVD-Audio
Pulse Density Modulation
Oversampling
Inter-Channel Redundancy
10. Describes various optical disc characteristics including the size and shape of the disc - the size of pits - the speed at which the disc spins - and a multitude of aspects regarding the specifications of the player itself
Physical Disc Format
Frequency
Frames
Playback Buffering
11. Accuracy with which an electronic system reproduces the sound or image of its input signal
Headroom Bits
Photoreceptor
Equal Loudness Contour
Fidelity
12. ABR; Codecs that encode data by determining how dense or sparse areas of the audio are while also keeping bit rate within specified limits to avoid rebuffering
Average Bit Rate
Lossless Formats
Spectrum Multiplication
Constant Bit Rate
13. Roughly around 1 -130 ft/s
Class - D Amplifier
Overflow
Pad Head & Tail
Speed of Sound
14. Level above which audible sounds are painful (125 - 130 db)
Sample Rate
SCMS
Threshold of Pain
Successive Approximation
15. Playback; I/O Connections; CPU (Streaming); Conversion from DAW or Software
Buffering Locations
Word Clock
Digital
dB/SPL
16. Digital (binary) measurements of how long each pulse is either on or off; Width of increasing voltage or decreasing voltage is assigned a 1 or 0 respectively
Floating Point
Pulse Width Modulation
Lossy Formats
Dithering
17. 16-Bit; 44.1 kHz; PCM; Stereo
Non -Compressed Audio Data Rate Formula
Oversampling
Jitter
Requirements for CD Audio
18. EBU
Zero-Latency Monitoring
6 dB
European Broadcasting Union
Overflow
19. EDL; Final list of samples used in the audio editing process; Identified by time code
Edit Decision List
Anti-Imaging Filter
Pulse Code Modulation
Pass Band
20. The continuous loss of signal strengths as a signal travels through a medium
Physical Disc Format
Sample Rate
Variable Bit Rate
Attenuation
21. The mathematics - algorithms - and the techniques used to manipulate signals after they have been converted to digital form
Logical Format
Sample Rate Effect on Anti-Aliasing
Digital Signal Processing
Dolby 7.1
22. How Loud (Y-Axis) & How Fast (X-Axis)
European Broadcasting Union
2 Dimensions of Sound
Blu-Ray
Sampling (Samples)
23. 'Capturing' part of digital audio; Never captures a signal perfectly
A/D Conversion
DVD-14
dB/FS
Audio over Ethernet (AoE)
24. Reference voltage determined by summing the voltage values of a predetermined number of previous samples; Numbers of 1 in row = waveform peak; Numbers of 0 in row = waveform trough; Basis of Sony's Direct Stream Digital (DSD)
Pulse Density Modulation
Zero-Latency Monitoring
Tascam Digital Interface Format (TDIF)
Direct Monitoring
25. 1.) Taking a series of evenly- spaced measurements 2.) Signal contains no frequency components higher than half the sample rate
Masking Analysis...
Requirements for A/D Conversion
Index of Reflectivity
Glass Master
26. Digital and analog processing capability is combined on a single microchip allowing for 1- bit resolution at high sample rates
A/D Conversion Signal Flow
Fletcher- Munson Curve
Delta-Sigma Modulation
Storage Conversion Steps
27. 15.9 GB; DS/DL
Entropy Coding
DVD-18
Sony-Philips Digital Interface Format (S/PDIF)
Inter-Channel Redundancy
28. 'Reconstructing' part of digital audio
Nanometer
RMS
D/A Conversion
Lossy
29. Digital Word -> Series of Resistors (each with assigned charges) -> Sample- and-Hold Circuit -> Anti-Imaging Filter (Smoothing Filter) -> Reconstructed Sample
DVD-Audio
D/A Conversion Signal Flow
Buffer Size
Frames
30. 7.95 GB; SS/DL
Sonogram
Buffer Size
DVD-9
Internal Resolution
31. Occurs as data is assembled into meaningful bits or information and as left & right channels are separated
Sonogram
Pulse Width Modulation
Bit Rate
I/O Connection Buffering
32. Method of representing an acoustic quantity with a series of binary numbers; Can have only specific individually distinct values
Compression
Fourier Series
Digital
Compression
33. Take up half as many bits (50%); Algorithm can keep same quality by lossing the stereo track
Overflow
Inter-Channel Redundancy
MONO
Ethernet
34. Series of dots and dashes representing the letters of the alphabet; Most common letters are represented by the shortest dots and dashes; Example of entropy coding
6 dB
Perceptual Coding
Buffering Locations
Morse Code
35. Inner ear component that attaches to the stapes and helps to decrease the amplitude of vibrations; Causes the masking phenomenon
Audio Engineering Society
Stapedes Reflex
Pulse Density Modulation
Attenuation
36. Discrete incremental distinctions made between the value of one sample and the next; Breaks down bit depth into a series of evenly spaced intervals
Quantization Intervals
D/A Conversion Signal Flow
Noise Shaping
Redither
37. Ratio of magnitude of the analytical signal to the magnitude of the background noise signal
Frames
Multichannel Audio Digital Interface (MADI)
Pass Band
Signal- to- Noise Ratio
38. Multi-Bit Words; (Pulse Code Modulation)
PCM
RMS
SCMS
Sine Wave
39. A drive that can read and write on optical media that hold up to 50 GB on two layers; 24- bit/96 kHz for 8-Channel; 24- bit/192 kHz for 6-Channel
Lightpipe
Fourier Series
Impulse Response
Blu-Ray
40. Leaving space at beginning and ending of song for data crunching during mastering; Last step in mastering process
Average Bit Rate
Pad Head & Tail
Frames
Buffering Locations
41. A situation where a calculated value cannot fit into the number of digits reserved for it
Word Clock
Noise Shaping
Acoustics
Overflow
42. Have odd numbered harmonics
Square Wave
Stapedes Reflex
DVD-14
Buffer Size
43. Toshiba developed digital audio interface utilizes fiber optics as a transmission medium.
Quantization Error
Optical Cable
TOSLINK
Footroom
44. Eight channel digital surround sound system by Dolby
Gain Staging
Delta-Sigma Modulation
Dolby 7.1
Convolution
45. (Amplitude Based) Amplitude: Voltage; Quantization; Bit Depth; Quantization Intervals; Quantization Noise; [Signal:Quantization Noise Ratio]; Dither; Dynamic Range
Effective Bit Depth
Y-Axis Terminology
Micron
Acoustics
46. When recording you want the smallest buffer available; When mixing you want the largest buffer available
Buffer Size
Noise Shaping
TOSLINK
DVD-10
47. Signal that uses variable voltage to create continuous waves resulting in an inexact transmission
Amplitude Accuracy
Dolby 7.1
Algorithm
Analog
48. Softest sound that can be heard by the average human ear (0 dB)
Threshold of Hearing
Cutoff Frequency
Edit Decision List
6 dB
49. Signal conversions are mixed with playback tracks resulting in near-zero latency
Exponent
Direct Monitoring
Digital
Oscillation
50. Samples are duplicated and the playback sampling rate correspondingly increased; Significantly raises the Nyquist limit to a range well beyond human hearing; Processing 'pushes' the distortion resulting from quantization error into these higher frequ
Dolby 5.1
Base 2 System
Noise Shaping
Threshold of Hearing
Can you answer 50 questions in 15 minutes?
Let me suggest you:
Browse all subjects
Browse all tests
Most popular tests
Major Subjects
Tests & Exams
AP
CLEP
DSST
GRE
SAT
GMAT
Certifications
CISSP go to https://www.isc2.org/
PMP
ITIL
RHCE
MCTS
More...
IT Skills
Android Programming
Data Modeling
Objective C Programming
Basic Python Programming
Adobe Illustrator
More...
Business Skills
Advertising Techniques
Business Accounting Basics
Business Strategy
Human Resource Management
Marketing Basics
More...
Soft Skills
Body Language
People Skills
Public Speaking
Persuasion
Job Hunting And Resumes
More...
Vocabulary
GRE Vocab
SAT Vocab
TOEFL Essential Vocab
Basic English Words For All
Global Words You Should Know
Business English
More...
Languages
AP German Vocab
AP Latin Vocab
SAT Subject Test: French
Italian Survival
Norwegian Survival
More...
Engineering
Audio Engineering
Computer Science Engineering
Aerospace Engineering
Chemical Engineering
Structural Engineering
More...
Health Sciences
Basic Nursing Skills
Health Science Language Fundamentals
Veterinary Technology Medical Language
Cardiology
Clinical Surgery
More...
English
Grammar Fundamentals
Literary And Rhetorical Vocab
Elements Of Style Vocab
Introduction To English Major
Complete Advanced Sentences
Literature
Homonyms
More...
Math
Algebra Formulas
Basic Arithmetic: Measurements
Metric Conversions
Geometric Properties
Important Math Facts
Number Sense Vocab
Business Math
More...
Other Major Subjects
Science
Economics
History
Law
Performing-arts
Cooking
Logic & Reasoning
Trivia
Browse all subjects
Browse all tests
Most popular tests