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. Unit of measurement that is equal to one billionth of a meter






2. 1st commercially successful AoE format for the transmission of digital audio - video - and control signals over 64- channel 100Mbps Ethernet networks






3. French mathematician that noted that any complex sound can be broken down into a series of component pure tones






4. Each bit in the bit depth is equal to a _____ increase in dynamic range






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






6. The set of rules that computers use to move files from one computer to another on an internet






7. 7.95 GB; SS/DL






8. Smallest interval measurable by a scientific instrument; Defined by bit rate (sample rate x bit depth)






9. A situation where a calculated value cannot fit into the number of digits reserved for it






10. AES






11. The number of compressions or rarefactions in one second; The higher the frequency the more compressions & rarefactions per second; Measured in Hertz






12. Lossless Format; Can hold up to 25GB on a single- layer disc and 50GB on a dual- layer disc






13. 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






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






15. The frequency above or below which attenuation begins in a filter circuit






16. 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






17. Signal conversions are mixed with playback tracks resulting in near-zero latency






18. Sony and Philips optical disc format; Utilizes sigma delta DSD to offer higher resolution; 1- bit; 2.8224 MHz; 6-Channel






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






20. The ability of a digital system to perform complex DSP without running into problems with overflow or loss of resolution






21. Pertaining to hearing or sound; Combination of the intensity of air pressure molecules with amplitude






22. Visual graph that shows how loud a sound is at different frequencies






23. Six channel (five speakers and one subwoofer for bass) digital surround sound system by Dolby






24. 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






25. Same as 'aliasing'






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






27. 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






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






29. Waveform of a pure tone showing simple harmonic motion






30. When recording you want the smallest buffer available; When mixing you want the largest buffer available






31. Eliminates frequencies above the Nyquist limit from becoming samples; Occurs prior to quantization






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






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






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






35. 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






36. The more bits allocated during quantization - the more accurate the measurement






37. Uses entropy coding as the basis; Computer data compression algorithm that packages files such as .ZIP & .RAR






38. A method of representing real numbers using a mantissa and an exponent






39. Circuit that interprets the meaning of the symbols as they were chosen and arranged by the encode






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






41. The difference between the analog value and the approximated digital value due to the 'rounding' that occurs while converting the analog signal to digital






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






43. 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






44. 4.38 GB; SS/SL






45. 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






46. Increases D/A sample rate from nominal rate to oversampling rate by turning series multi- bit PCM samples into 1- bit samples; (ex. => 44.1kHz sample rate converted to 2.8MHz and simultaneously converts multi- bit samples to 1- bit); Low Pass Filter






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






48. Allows for an internal sample rate at multiples of the input and output rates; Alleviates the need for steep 'brickwall' filters; Often combined with internal '1- bit' processing; Increases smoothing effect






49. In order to play multiple channels at one time data is buffered as read to disk; Latency happens between play command & beginning of playback






50. 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







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