Difference between revisions of "Quantization noise"
From Hydrogenaudio Knowledgebase
(this is a common equation I found on the web and borrowed from wikipedia (I need to learn more about LaTeX). Please let me know if there is a problem with putting it here.) |
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| − | During the | + | During the [[quantization]] process some precision gets lost, this changes the signal somewhat, the difference between the original signal and the quantized signal is called quantization noise or (rounding error). It is commonly expressed by the root-mean-square error equation. |
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| + | <math> N_Q = \frac{ \left ( \frac{V_{AD}}{2^Q} \right )^2 }{6 \cdot T_S \cdot R_L^2} </math> | ||
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| + | <math> V_{AD} </math> is the analogue voltage range of the converter expressed in (Volts), | ||
| + | <math> Q </math> is the number of bits in the converter or the resolution. | ||
| + | <math> T_S </math> is the sampling interval of the converter expressed in (seconds). | ||
| + | <math> R_L^2 </math> is the load resistance of the converter expressed in (Ohms). | ||
Revision as of 23:21, 13 June 2005
During the quantization process some precision gets lost, this changes the signal somewhat, the difference between the original signal and the quantized signal is called quantization noise or (rounding error). It is commonly expressed by the root-mean-square error equation.
is the analogue voltage range of the converter expressed in (Volts),
is the number of bits in the converter or the resolution.
is the sampling interval of the converter expressed in (seconds).
is the load resistance of the converter expressed in (Ohms).
