Second-harmonic generation: Difference between revisions

Revision as of 08:19, 4 February 2014

The real time factor (RTF) is a common metric for measuring the speed of an automatic speech recognition system. It can also be used in other contexts where an audio or video signal is processed (usually automatically) at nearly constant rate (e.g. reading music from a CD).

Definition

If it takes time ${P}$ to process an input of duration ${I}$ , the real time factor is defined as

RTF={\frac {P}{I}}

.

If, for example, it takes 8 hours of computation time to process a recording of duration 2 hours, the real time factor is 4. When the real time factor is 1 or less than 1, the processing is done in real time. It is a hardware-dependent value.

The accuracy of a speech recognition system, on the other hand, is measured with the word error rate.

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+{{Multiple issues||wikify = March 2013|unreferenced = October 2006}}
+The '''real time factor (RTF)''' is a common metric for measuring the speed of an automatic [[speech recognition]] system. It can also be used in other contexts where an audio or [[video signal]] is processed (usually automatically) at nearly constant rate (e.g. reading music from a [[Compact disc|CD]]).
+==Definition==
+If it takes time <math> {P} </math> to process an input of duration <math> {I} </math>, the real time factor is defined as
+:<math> RTF = \frac{P}{I} </math>.
+If, for example, it takes 8 hours of computation time to process a recording of duration 2 hours, the real time factor is 4. When the real time factor is 1 or less than 1, the processing is done ''in real time''.  It is a hardware-dependent value.
+The accuracy of a speech recognition system, on the other hand, is measured with the [[word error rate]].
+{{DEFAULTSORT:Real Time Factor}}
+[[Category:Speech recognition]]

Second-harmonic generation: Difference between revisions

Revision as of 08:19, 4 February 2014

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