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. (Time Based) Frequency: Aliasing; Anti-Aliasing Filter; Sample Rate; Nyquist Limit
X-Axis Terminology
Attenuation
Aliasing
Oversampling
2. Unit of measurement that is equal to one billionth of a meter
Coaxial
Logical Format
RMS Meter
Nanometer
3. Roughly around 1 -130 ft/s
Sampling Theorem
European Broadcasting Union
EtherSound
Speed of Sound
4. Increases or decreases the digital signal so that the loudest sample is brought up to 0dBfs; Uses all bits from dynamic range and makes it even from track to track
Normalizing
Frequency
Requirements for A/D Conversion
0 dB FS
5. Measures the highest levels of a signal being recorded or mixed; Monitors for clipping - which occurs at 0dBFS); Does not always reflect perceived volume of signal
Audio Engineering Society
Class - D Amplifier
Footroom
Peak Level
6. Each bit in the bit depth is equal to a _____ increase in dynamic range
Conversion Buffering
6 dB
Sample Rate Effect on Anti-Aliasing
Bit Rate
7. Process that begins with a fast FFT analysis of the spectra of two input signals - then the multiplication of like frequencies - and IFFT to finalize the process
Spectrum Multiplication
Transfer Protocol
Dolby 5.1
Algorithm
8. More accuracy in low amplitudes and less in higher amplitudes
Sample Rate Effect on Anti-Aliasing
Amplitude Accuracy
Aliasing
Requirements for CD Audio
9. Multi-Bit Words; (Pulse Code Modulation)
Stapedes Reflex
Buffering
Compression
PCM
10. Branch of psychology concerned with the subjective perception of sound
Quantization Intervals
Variable Bit Rate
A/D Conversion Signal Flow
Psychoacoustics
11. Very selective method of lowering buffer levels by halting different levels of audio processing
Low-Latency Monitoring
Sample Rate
Normalizing
Internal Resolution
12. Mixing data and control characters in a single operation
Interleaved
Floating Point
dB/SPL
Pass Band
13. How Loud (Y-Axis) & How Fast (X-Axis)
2 Dimensions of Sound
Impulse Response
Quantization Error
Storage Conversion Steps
14. Voltage -> Dither -> Anti-Aliasing (Low Pass Filter) -> Sample & Hold Circuit -> Successive Approximation/Quantizer --) 100111010 (PCM Audio File)
Frames
Micron
A/D Conversion Signal Flow
AoE Formats
15. 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
Noise Shaping
Interpolation Filter
Intensity
Sample- and-Hold
16. Playback; I/O Connections; CPU (Streaming); Conversion from DAW or Software
Pad Head & Tail
Buffering Locations
Delta-Sigma Modulation
6 dB
17. Digital and analog processing capability is combined on a single microchip allowing for 1- bit resolution at high sample rates
Dolby 5.1
Harmonic Content
Delta-Sigma Modulation
Masking Analysis...
18. Measure of the amplitude of a longitudinal wave
Equal Loudness Contour
Direct Monitoring
Intensity
AES3
19. Also known as equal loudness curves; Graph that indicates the average ear sensitivity to different frequencies at different SPL levels (as volume increases - these curves flatten out)
Intensity Stereo
Fletcher- Munson Curve
Footroom
Data Packing
20. Rate at which energy is drawn from a source that produces a flow of electricity in a circuit; Expressed in volts
Voltage
DVD-9
Dithering
Footroom
21. French mathematician that noted that any complex sound can be broken down into a series of component pure tones
Joseph Fourier
Redither
Headroom Bits
Edit Decision List
22. Method of sampling data at a higher resolution (higher sample rate) as a means of reducing harmonic content during D/A conversion; (x2) oversampling gets rid of all odd harmonic content
RMS Meter
Index of Reflectivity
Oversampling
Sine Wave
23. 12.33 GB; DS/ML
DVD-14
Logical Format
CPU Buffering
Spectrum Multiplication
24. Having a repeated succession of waves or curves as in a sound waveform
Physical Disc Format
Quantizer
Sinusoidal
Audio over Ethernet (AoE)
25. CBR; Codecs encodes data at a constant rate regardless of density of the audio file
Bit Depth Effect on Dynamic Range
Noise Shaping
Nanometer
Constant Bit Rate
26. Difference in brightness between land and pit on a CD Physical Format
Significand
Additive Synthesis...
Index of Reflectivity
Digital Signal Processing
27. Computer program or device capable of encoding and/or decoding a digital data stream with the end result being a reduced file size
Spectra
Physical Disc Format
Codec
Nyquist Frequency
28. 1st commercially successful AoE format for the transmission of digital audio - video - and control signals over 64- channel 100Mbps Ethernet networks
Pulse Density Modulation
Inter-Channel Redundancy
CobraNet
Rarefaction
29. Ultra low- latency - 512- channel (on a gigabit network) - less flexible AoE format; Routed like audio cables...not network cables
Normalizing
EtherSound
Nyquist Frequency
Word Clock
30. Perceptual coding technique that uses louder sounds of a similar frequency to decide what information is to be saved during data reduction
Masking Analysis...
Glass Master
Pulse Code Modulation
Cutoff Frequency
31. Father of modern information theory; Solidified the Nyquist Theory by adding the concept that bits per second (binary representation of audio signals) must be at equal intervals to accurately represent data
Claude Shannon
Threshold of Hearing
Lossy
Oscillation
32. 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
0 dB FS
Morse Code
Index of Reflectivity
D/A Conversion
33. Digital Word -> Series of Resistors (each with assigned charges) -> Sample- and-Hold Circuit -> Anti-Imaging Filter (Smoothing Filter) -> Reconstructed Sample
D/A Conversion Signal Flow
Joint Stereo
Subbands
Aliasing
34. Low Pressure; Part in a longitudinal wave where the particles are spread apart
Cutoff Frequency
Bit Rate
Signal- to- Noise Ratio
Rarefaction
35. CobraNet; EtherSound; Dante; AVB (currently under development)
Exponent
Buffering
D/A Conversion Signal Flow
AoE Formats
36. The process of reducing the space required to store data by efficiently encoding the content.
Acoustics
Compression
Voltage
Coaxial
37. Take up half as many bits (50%); Algorithm can keep same quality by lossing the stereo track
MONO
AES3
Oversampling
Transfer Protocol
38. EDL; Final list of samples used in the audio editing process; Identified by time code
CPU Buffering
Edit Decision List
Floating Point
RMS Meter
39. Found that aliasing was always a problem no matter how fast you sample; Less data recorded but more accurate; 2 samples per wave length.
Overflow
Harry Nyquist
Delta-Sigma Modulation
Foldover
40. 1.) Taking a series of evenly- spaced measurements 2.) Signal contains no frequency components higher than half the sample rate
Requirements for A/D Conversion
Quantization Intervals
RMS Meter
Photoreceptor
41. Most significant lossless coding technique in current use; Measure of disorder in which long strings of data are represented by short symbols and uses the shortest symbols to represent the most common repetitive audio data maximizing data reduction
Entropy Coding
Lossy Formats
Exponent
Footroom
42. Have odd numbered harmonics
Lossy Formats
Optical Cable
Square Wave
Foldover
43. Deviation from a normal - steady pulse or tick of a clock that contributes to misrepresentation of a signal; Result of small timing irregularities that become magnified during the transmission of digital signals as the signals are passed from one dev
MONO
Quantizer
DVD-18
Jitter
44. Electromagnetic receptor that detects the radiation known as visible light
Ethernet
Photoreceptor
Square Wave
Dynamic Range
45. Toshiba developed digital audio interface utilizes fiber optics as a transmission medium.
Sinusoidal
Audio Engineering Society
TOSLINK
Delta-Sigma Modulation
46. The elapsed time it takes for a packet of data to arrive at its destination; Lagging or pause of an audio signal as digital processing occurs; Can be managed utilizing several forms of 'audio monitoring'
Perceptual Coding
Oscillation
Latency
Quantization
47. Same as 'aliasing'
dB/SPL
Foldover
Anti-Aliasing Filter
Edit Decision List
48. Sony and Philips optical disc format; Utilizes sigma delta DSD to offer higher resolution; 1- bit; 2.8224 MHz; 6-Channel
Floating Point
A/D Conversion
Oscillation
SACD
49. 8.75 GB; DS/SL
Micron
DVD-10
Ethernet
Quantization Intervals
50. The set of rules that computers use to move files from one computer to another on an internet
Lossless Formats
Gain Staging
Morse Code
Transfer Protocol
Sorry!:) No result found.
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