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






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






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






4. Same as 'aliasing'






5. 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






6. Data reduction technique that selectively removes original information in order to significantly reduce the file size; Some data is lost; Files can be reduced up to 99% in size (90% with no perceived sound quality loss); Bit rate effects the perceive






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






8. 'Capturing' part of digital audio; Never captures a signal perfectly






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






10. Having a repeated succession of waves or curves as in a sound waveform






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






12. 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






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






14. Unit of measurement that is equal to one millionth of a meter






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






16. 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'






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






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






19. The mathematics - algorithms - and the techniques used to manipulate signals after they have been converted to digital form






20. High channel count; 64 channels on one cable; Coaxial cable with BNC connector or fiber optic with ST1 connector






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






22. Computer program or device capable of encoding and/or decoding a digital data stream with the end result being a reduced file size






23. Softest sound that can be heard by the average human ear (0 dB)






24. Electromagnetic receptor that detects the radiation known as visible light






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






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






27. 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)






28. Data transmission protocol over which computer network traffic travels; Poorly suited to real- time transmission but numerous attempts have been made to harness the technology because of its flexible routing; Uses simple Cat5 cabling; Resists interfe






29. ADAT Optcal; 8- in/8- out on two cables; Fiber- optic - TOSLINK connector






30. 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






31. 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






32. 1st commercially successful AoE format for the transmission of digital audio - video - and control signals over 64- channel 100Mbps Ethernet networks






33. 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






34. Method of representing an acoustic quantity with a series of binary numbers; Can have only specific individually distinct values






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






36. 8- in/8- out on one cable; 25- pin D- sub connector






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






38. 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






39. 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






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






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






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






43. 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.






44. Only 2 digits used; The value of each place (ones - hundreds - etc.) are as follows from greatest to least: 128 - 64 - 32 - 16 - 8 - 4 - 2 - 1






45. Branch of psychology concerned with the subjective perception of sound






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






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






48. Number of bits per second processed when sampling sound; (Sampling Rate x Bit Depth) = Resolution






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






50. 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







Sorry!:) No result found.

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