Test your basic knowledge |

Digital Audio

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. Anytime bit depth is reduced the gap gets bigger so more dithering is required






2. Built into DAWs; Bits are added when signals are mixed together to avoid clipping






3. The frequency range that is allowed through a filter






4. High Pressure - Part of a longitudinal wave where the particles of the medium are close together






5. Sony sigma- delta modulation based technology that bypasses the decimation and interpolation steps found in PCM converters






6. More accuracy in low amplitudes and less in higher amplitudes






7. Describes acceptable data - performances both offered and essential for a disc player - and the complete user experience






8. 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






9. How Loud (Y-Axis) & How Fast (X-Axis)






10. Difference in brightness between land and pit on a CD Physical Format






11. Found that aliasing was always a problem no matter how fast you sample; Less data recorded but more accurate; 2 samples per wave length.






12. Toshiba developed digital audio interface utilizes fiber optics as a transmission medium.






13. Number or variable that represents the number of times the base of a power is used as a factor; Defines magnitude






14. The difference in volume between the loudest and quietest sounds of a source






15. Ratio of magnitude of the analytical signal to the magnitude of the background noise signal






16. Amplitude meter that takes the square root of all instantaneous amplitudes and averages them to find a mean and squares that value; Useful with particularly complex waveforms






17. (Time Based) Frequency: Aliasing; Anti-Aliasing Filter; Sample Rate; Nyquist Limit






18. Overtones that contribute to the timbre of a sound and make up a complex waveform's physical characteristics






19. Based on Full Scale (dB/FS); -6dB represents a loss of one bit so account for this when calculating






20. Circuit that seizes voltage values with each tick of an A/D device's internal clock






21. DAW's and software must buffer when converting or bouncing and this latency can add up if not monitored






22. 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






23. Very quiet digital amplifier that produces a series of output pulses with the audio signal coded the same as the width of the output pulses; Pulses are used to represent wave forms and are either on or off; Intense signals have long pulses with short






24. A frequency specified for a filter (digital or electronic) the marks the point at which the frequency content of a signal is altered +/- 3dB






25. Digital and analog processing capability is combined on a single microchip allowing for 1- bit resolution at high sample rates






26. Rate at which energy is drawn from a source that produces a flow of electricity in a circuit; Expressed in volts






27. Serial Copy Management System; main difference between AES3 & S/PIDF






28. EBU






29. Governs the frequency response of a digital system; The highest- frequency component that can be captured with a sampling rate; always 1/2 of sampling rate; Also called the limiting frequency






30. Joint-Stereo Technique; Since the human brain is unable to localize sounds at high frequencies well sounds above 9 kHz threshold are encoded in mono






31. Occurs as data is assembled into meaningful bits or information and as left & right channels are separated






32. Take up half as many bits (50%); Algorithm can keep same quality by lossing the stereo track






33. Twice as many samples as the highest frequency at minimum; Sampling rate totally controls frequency response






34. Multi-Bit Words; (Pulse Code Modulation)






35. EDL; Final list of samples used in the audio editing process; Identified by time code






36. Based on psychoacoustics - these are the basis of frequency analysis for a perceptual codec;






37. Same as 'aliasing'






38. More aggressive lossy data reduction techniques that require further manipulation of the stereo field; Examples are 'Intensity' & 'M-S'






39. The amount of energy at each wavelength






40. Inner ear component that attaches to the stapes and helps to decrease the amplitude of vibrations; Causes the masking phenomenon






41. Process of building a complex tone by starting with the fundamental frequency and adding pure tone harmonics






42. A digital filter's time domain output sequence when the input is a single sample is input






43. Have odd numbered harmonics






44. Used as the main disc from which other discs are made; Composed of ground glass with a very fine photoresistor layer; An imaging laser burns pit and land patterns in preparation for duplication






45. 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






46. Playback; I/O Connections; CPU (Streaming); Conversion from DAW or Software






47. The process of reducing the space required to store data by efficiently encoding the content.






48. (AES/EBU); 110O - 2- channel balanced digital audio cable with an XLR connection; NOT a mic cable!!






49. Subtract place values from the decimal number and place ones or zeros in the correct places






50. CBR; Codecs encodes data at a constant rate regardless of density of the audio file







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

Browse all subjects

Browse all tests

Most popular tests