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13 Cards in this Set
- Front
- Back
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PCM Quantizes an Analog Audio Signal into
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Steps
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PCM =
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Pulse-code modulation (PCM) is a method used to digitally represent sampled analog signals.
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PCM uses how many steps to process an analog signal to digital in a 16 bit system?
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65,536
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PCM uses how many steps to process an analog signal to a digital signal on a 24 bit system?
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16,777,216 for 24 bit
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Dynamic Range =
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Wordlength x 6
-6dB of Gain per bit |
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Lowest signal
16-bit = 24-bit = 48-bit = 56-bit = |
16-bit = -96dB
24-bit = -144dB 48-bit = -288dB 56-bit = -336dB |
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Dither is
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Randomized noise which averages 0 Volts DC (has an equal number of 1's and 0's)
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LSB
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Least Significant Bit
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Dither is added to the analog signal at the ________ to toggle or alternate the ____ in the wordlength
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Dither is added to the analog signal at the INPUT STAGE to toggle or alternate the LSB (Least Significant Bit) in the wordlength
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Pro Tools Has a Fixed Bit Depth of
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48-Bits (288 dB) of gain
remember multiply the bit length by -6 and that will = the amount of available dB's. |
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Floating Point
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Infinitely Expanding interval wordlengths
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Extra Dither is added in the process of rounding up or down voltages from long wordlengths into short wordlengths to avoid
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Truncation Distortion
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PLL
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Phase Lock Loop. is a control system that generates an output signal whose phase is related to the phase of an input "reference" signal.
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