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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. 8.75 GB; DS/SL






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






5. 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'






6. Cable used to transmit data; Inner cable is surrounded by a plastic insulator - which is surrounded by a wire mesh conductor that insulates the internal signal wire from external interference and an outer casing that functions as a ground






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






8. Discrete incremental distinctions made between the value of one sample and the next; Breaks down bit depth into a series of evenly spaced intervals






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






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






11. Specific set of instructions for carrying out a data reduction technique that determines how to 'save' binary data information efficiently






12. Leaving space at beginning and ending of song for data crunching during mastering; Last step in mastering process






13. 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






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






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






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






17. Sample Rate x Bit Depth x # of Channels






18. The act of a frequency swinging back and forth with a steady - uninterrupted rhythm






19. 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.






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






21. Have odd numbered harmonics






22. Single- pin RCA cable or fiber- optic TOSLINK connector used for digital transfer; 75O coaxial - 2- channel unbalanced; 'Consumer' format of AES3






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






24. Stores only one copy of a stereo signal and assigns it to both channels in order to save 50% of original bandwidth






25. Algorithm uses matrix of a mid/side microphone pair to determine a side signal & that signal is reduced then distributed as code in stereo






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






27. 4.38 GB; SS/SL






28. A drive that can read and write on optical media that hold up to 50 GB on two layers; 24- bit/96 kHz for 8-Channel; 24- bit/192 kHz for 6-Channel






29. Waveform of a pure tone showing simple harmonic motion






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






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






32. Low Pressure; Part in a longitudinal wave where the particles are spread apart






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






34. If a signal is sampled at a rate higher than twice the highest significant signal frequency and at evenly spaced intervals - then the samples contain all the information of the original signal






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






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






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






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






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






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






41. Allowance of noise floor below that which is required for the final product






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






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






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






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






46. The amount of energy at each wavelength






47. 1st commercially successful AoE format for the transmission of digital audio - video - and control signals over 64- channel 100Mbps Ethernet networks






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






49. Contains all even and odd harmonics associated with a fundamental tone - making it a rich source for modeling other sounds; Amplitude of each overtone decreases exponentially as a ratio of the harmonic's frequency to that of the fundamental






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







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