| 11. | The modulator is made by a quantizer which converts the difference between the input signal and the average of the previous steps.
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| 12. | The use of this approximation can allow the entropy coding design problem to be separated from the design of the quantizer itself.
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| 13. | However, it must be used with care : this derivation is only for a uniform quantizer applied to a uniform source.
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| 14. | Constant quantizer encoding can be used, however, to accurately determine the minimum and maximum bitrates possible for encoding a given video.
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| 15. | In such cases, using a mid-tread uniform quantizer may be appropriate while using a mid-riser one would not be.
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| 16. | However, for a source that does not have a uniform distribution, the minimum-distortion quantizer may not be a uniform quantizer.
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| 17. | However, for a source that does not have a uniform distribution, the minimum-distortion quantizer may not be a uniform quantizer.
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| 18. | Contrary to popular belief, a fixed frame-level quantizer ( set by the user ) does not deliver a constant level of quality.
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| 19. | The extent of the reduction may be varied by changing the quantizer scale code, taking up much less bandwidth than a full quantizer matrix.
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| 20. | The extent of the reduction may be varied by changing the quantizer scale code, taking up much less bandwidth than a full quantizer matrix.
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