Review 10: Digital 2 Word Scramble
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Question | Answer |
In digital audio's binary system, what are the numbers 1 and 0 called? | Bits {8 bits is 1 byte; 4 bits is a nybble} |
What is sampling rate or frequency? | The number of times per second a signal's amplitude is checked and assigned a numerical value. |
What is resolution? | The nubmer of steps in amplitude expressed in bits |
How many times higher than the frequency of the signal to be sampled MUST our sampling rate be? | 2 |
Iin a digital system, what is an anti-aliasing filter (LPF) used for? | To remove frequencies too high to be sampled at the selected sampling rate |
What do we call the noise added to digital audio to improve low amplitude resolution? | Dither |
What kind of recording system records continuously varying waveforms? | Analog |
What kind of recording system records waveforms as stepped, numberic increments? | Digital |
What component in a digital system controls timing functions? | Clock {or [digital] wordclock} |
What component converts analog signal to digital data? | Analog to digital converter (A/D or ADC) |
What category of digital recorders do DASH machines belong to? | Stationary Head |
What category of digital recorders do DATs, ADATs, and Tascam DTRS machines belong to? | Rotary Head |
What does MDM stand for? Give 2 examples. | Modular Digital Multirack: ADAT and DTRS machines |
What is the sampling rate of Red Book audio CDs? | 44.1 kHz |
What is Red Book CD resolution? | 16-bit |
What represents bits on a CD? | Pits |
What reads the data from a CD? | A Laser (and optical pickup) |
What does 5.1 surround mean? | 5 full bandwidth channels: L, C, R, and L&R surround |
What surround formats are in 5.1? | Dolby Digital and DTS |
What surround format adds left and right center channels (7.1)? | SDDS |
Which sounds better - THX or DTS? | Question is invalid: DTS is a surround sound encoding process. THX is room and system certification. |
What 2 new formats offer higher quality and more channels than CD? | DVD-A and SACD |
What do we call the systems used for exchange of digital audio? | Digital audio interfaces |
Which are not digital audio interfaces: AES/EBU, MADI, MIDI, S/PDIF, TDIF, ALESIS “lightpipe”, Billy’s crackpipe? | In addition to the obvious one, MIDI - It carries data used to control midi devices, not audio |
What is replacing wire as a signal/data carrier? | Fiber optics |
Which are not proprietary interfaces: AES/EBU, MADI, S/PDIF, TDIF, ALESIS “lightpipe” | AES/EBU and MADI |
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sticksmcfly
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