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. 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






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






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






4. 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






5. A network communications protocol that specifies how machines will exchange data; Uses a broadcast system in which one machine transmits its message on the communication medium and the other machines listen for messages directed to them






6. 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






7. Signal voltage is relayed to a register from sample- and - hold circuit; Holds reference frequencies in binary form that decrease in value; Finds approximated value & assigns binary number accordingly






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






9. 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






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






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






12. Decibels Full Scale






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






14. 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






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






16. A time regulator that makes all samples and bits to align when working with interconnected digital devices; Basically a signal that all of the digital devices refer to when operating.






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






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






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






20. Digital Word -> Series of Resistors (each with assigned charges) -> Sample- and-Hold Circuit -> Anti-Imaging Filter (Smoothing Filter) -> Reconstructed Sample






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






22. Number of bits used to represent the smallest unit of information in an audio file; Greater bit depth = better quality audio






23. Signal that uses variable voltage to create continuous waves resulting in an inexact transmission






24. 16-Bit; 44.1 kHz; PCM; Stereo






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






26. 1.) Taking a series of evenly- spaced measurements 2.) Signal contains no frequency components higher than half the sample rate






27. 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






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






29. 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






30. Removes high frequency images and noise and smoothes the stair case output coming from of the sample and hold circuit; Also called a SMOOTHING FILTER






31. 15.9 GB; DS/DL






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






33. 7.95 GB; SS/DL






34. 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






35. Measuring equipment in A/D conversion that processes voltage and provides a value for that voltage






36. 12.33 GB; DS/ML






37. Splits the input signal and mixes it with an analog copy so that no latency is present






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






39. Method used in digital recording and reproduction in which a signal is sampled at various points and the resulting value is translated into binary numbers






40. Accuracy with which an electronic system reproduces the sound or image of its input signal






41. CobraNet; EtherSound; Dante; AVB (currently under development)






42. Sum of all harmonics; Sum of sine and cosine waves which have frequencies f - 2f - 3f - 4f...






43. EBU






44. 1st commercially successful AoE format for the transmission of digital audio - video - and control signals over 64- channel 100Mbps Ethernet networks






45. 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'






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






47. The loudest point of a Full Scale system






48. Industry Standards: -6 dB Peak = -20 RMS Meter






49. ADPCM; Pulse code modulation that produces a digital signal with a lower bit rate than standard PCM; Records only the difference between samples






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