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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. When recording you want the smallest buffer available; When mixing you want the largest buffer available
Bit Depth Effect on Dynamic Range
Joseph Fourier
Psychoacoustics
Buffer Size
2. RAM holds in memory audio data before it is transferred to the memory controller; Certain amount of data is processed before large amounts of data are streamed to prevent latency
Buffering
Zero-Latency Monitoring
Direct Monitoring
Digital Signal Processing
3. Leaving space at beginning and ending of song for data crunching during mastering; Last step in mastering process
Pad Head & Tail
Transfer Protocol
Claude Shannon
Digital
4. Inner ear component that attaches to the stapes and helps to decrease the amplitude of vibrations; Causes the masking phenomenon
Stapedes Reflex
Anti-Imaging Filter
Masking Analysis...
PCM
5. Mixing data and control characters in a single operation
Interleaved
Dynamic Range
Constant Bit Rate
Pulse Width Modulation
6. The act of a frequency swinging back and forth with a steady - uninterrupted rhythm
Quantization Error
Transfer Protocol
Blu-Ray
Oscillation
7. Algorithm uses matrix of a mid/side microphone pair to determine a side signal & that signal is reduced then distributed as code in stereo
Lossy
M-S Stereo
Audio Engineering Society
Joint Stereo
8. 15.9 GB; DS/DL
Oversampling
Sample Rate Effect on Anti-Aliasing
Quantizer
DVD-18
9. Low Pressure; Part in a longitudinal wave where the particles are spread apart
DVD-5
AoE Formats
Rarefaction
Direct Monitoring
10. Pertaining to hearing or sound; Combination of the intensity of air pressure molecules with amplitude
Dynamic Range
Pulse Code Modulation
dBFS
Acoustics
11. Uses entropy coding as the basis; Computer data compression algorithm that packages files such as .ZIP & .RAR
A/D Conversion Signal Flow
A/D Conversion
Decoder
Data Packing
12. The more bits allocated during quantization - the more accurate the measurement
Peak Level
Signal- to- Noise Ratio
Bit Depth Effect on Dynamic Range
Fletcher- Munson Curve
13. 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
Impulse Response
Successive Approximation
Fourier Series
Physical Disc Format
14. A digital filter's time domain output sequence when the input is a single sample is input
Impulse Response
Pad Head & Tail
2 Dimensions of Sound
Glass Master
15. Occurs as data is assembled into meaningful bits or information and as left & right channels are separated
Micron
Entropy Coding
I/O Connection Buffering
Pass Band
16. A method of representing real numbers using a mantissa and an exponent
Spectra
Resolution
Edit Decision List
Floating Point
17. Measurement at regular intervals of the amplitude of a varying waveform (in order to convert it to digital form); There must be a minimum of 2 samples for each cycle in a waveform
Morse Code
Sampling (Samples)
Word Clock
Index of Reflectivity
18. Reduces A/D sample rate from the oversampled rate to nominal rate by turning series of one- bit samples into a series of multi- bit PCM samples; (ex. => 2.8MHz sample rate converted to 44.1kHz and simultaneously converts 1-Bit samples to multi- bit);
Decimation Filter
Decimal- to-Binary Conversion
Joint Stereo
SCMS
19. 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
Footroom
Oversampling
Convolution
Harmonic Content
20. 16-Bit; 44.1 kHz; PCM; Stereo
Word Clock
Footroom
Dithering
Requirements for CD Audio
21. EDL; Final list of samples used in the audio editing process; Identified by time code
Edit Decision List
Dolby 5.1
Overflow
Harmonic Content
22. Overtones that contribute to the timbre of a sound and make up a complex waveform's physical characteristics
Glass Master
Harmonic Content
Sample Rate
Playback Buffering
23. DAW's and software must buffer when converting or bouncing and this latency can add up if not monitored
X-Axis Terminology
RMS Meter
Intensity
Conversion Buffering
24. Visual graph that shows how loud a sound is at different frequencies
Sonogram
Effective Bit Depth
PCM
Lossy
25. The difference in volume between the loudest and quietest sounds of a source
Subbands
Resolution
Dynamic Range
Multichannel Audio Digital Interface (MADI)
26. The loudest point of a Full Scale system
0 dB FS
A/D Conversion
Average Bit Rate
X-Axis Terminology
27. Stores only one copy of a stereo signal and assigns it to both channels in order to save 50% of original bandwidth
Y-Axis Terminology
Inter-Channel Redundancy
Glass Master
Data Packing
28. Branch of psychology concerned with the subjective perception of sound
CobraNet
RMS Meter
Headroom Bits
Psychoacoustics
29. Sony sigma- delta modulation based technology that bypasses the decimation and interpolation steps found in PCM converters
Decoder
Direct Stream Digital
Buffering
Pad Head & Tail
30. 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)
Foldover
Buffer Size
Pulse Density Modulation
Fletcher- Munson Curve
31. Measuring equipment in A/D conversion that processes voltage and provides a value for that voltage
Quantization Intervals
Quantizer
Transfer Protocol
Class - D Amplifier
32. Computer program or device capable of encoding and/or decoding a digital data stream with the end result being a reduced file size
DVD-18
Compression
Red Book
Codec
33. Digital and analog processing capability is combined on a single microchip allowing for 1- bit resolution at high sample rates
D/A Conversion
Nyquist Frequency
Delta-Sigma Modulation
Pass Band
34. The art of deciding where to place a processor in signal flow based on how that processor will be influenced by the other processors in the path
Gain Staging
Joseph Fourier
Intensity Stereo
Peak Level
35. Specific set of instructions for carrying out a data reduction technique that determines how to 'save' binary data information efficiently
Harry Nyquist
Quantizer
Frames
Algorithm
36. Apple Lossless; Windows Media Lossless; DTS HD Master Audio; Dolby True HD; FLAC
Lossless Formats
A/D Conversion Signal Flow
CobraNet
DVD-5
37. Number or variable that represents the number of times the base of a power is used as a factor; Defines magnitude
Blu-Ray
Exponent
Equal Loudness Contour
Coaxial
38. Multi-Bit Words; (Pulse Code Modulation)
Footroom
Pass Band
PCM
D/A Conversion Signal Flow
39. Unit of measurement that is equal to one millionth of a meter
Lossy Formats
dB/SPL
Micron
Dolby 5.1
40. Channels are processed one at a time and the results are stored on multiple CPU buffers that alternately send data as DAW requests the data for playback; First few seconds are relayed to the buffer prior to processing and playback and it continuously
Perceptual Coding
Joseph Fourier
Psychoacoustics
CPU Buffering
41. 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
Index of Reflectivity
Footroom
6 dB
Claude Shannon
42. VBR; Most common & best data reduction technique; Codecs that encode data by determining how dense or sparse areas of the audio are; Can result in buffering issues
Variable Bit Rate
Analog
Sinusoidal
Latency
43. Unit of measurement that is equal to one billionth of a meter
2 Dimensions of Sound
Nanometer
Logical Format
Cutoff Frequency
44. Voltage -> Dither -> Anti-Aliasing (Low Pass Filter) -> Sample & Hold Circuit -> Successive Approximation/Quantizer --) 100111010 (PCM Audio File)
Decoder
Internal Resolution
A/D Conversion Signal Flow
Interleaved
45. Full Scale; Type of metering that measures level in digital recording system; Recording and Mixing levels should NEVER exceed 0dB FS in digital audio or clipping will occur
Decoder
dB/FS
Bit Depth
Transfer Protocol
46. Signal conversions are mixed with playback tracks resulting in near-zero latency
Direct Stream Digital
Direct Monitoring
Aliasing
Zero-Latency Monitoring
47. The continuous loss of signal strengths as a signal travels through a medium
Attenuation
A/D Conversion Signal Flow
Decimal- to-Binary Conversion
Resolution
48. MPEG; Standardizing body of audio coding
Spectra
AES3
Motion Pictures Experts Group
Sine Wave
49. Measure of the amplitude of a longitudinal wave
Intensity
Signal- to- Noise Ratio
Cutoff Frequency
Decimal- to-Binary Conversion
50. Twice as many samples as the highest frequency at minimum; Sampling rate totally controls frequency response
Ethernet
Sampling Rule
Bit Rate
Zero-Latency Monitoring