Digital Audio
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Digital Audio
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25 Questions

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

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

3. 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

4. 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

5. 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

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

7. Measure of the amplitude of a longitudinal wave

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

9. 8- in/8- out on one cable; 25- pin D- sub connector

10. Eight channel digital surround sound system by Dolby

11. 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

12. 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

13. Perceptual coding technique that uses louder sounds of a similar frequency to decide what information is to be saved during data reduction

14. 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

15. Process of building a complex tone by starting with the fundamental frequency and adding pure tone harmonics

16. 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

17. (Amplitude Based) Amplitude: Voltage; Quantization; Bit Depth; Quantization Intervals; Quantization Noise; [Signal:Quantization Noise Ratio]; Dither; Dynamic Range

18. 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

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

20. 12.33 GB; DS/ML

21. Occurs as data is assembled into meaningful bits or information and as left & right channels are separated

22. 16-Bit; 44.1 kHz; PCM; Stereo

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

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

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

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