| 摘要 |
<p>Methods and instruments for generating covariance and correlation values of two or more signals. The covariance or correlation values (150) are used to compare intervals of interest of the two signals and to produce trigger events based on similarities between the two signals. A reference signal is digitized and stored, and then used as a reference when comparing to a real-time input signal (140). Mean values of the input signal and the previously stored reference signal are generated so that suitable covariance and correlation values can be generated. Threshold detectors detect when the covariance value and/or the correlation value exceed certain thresholds, which can cause the test and measurement instrument (105) to be triggered.</p> |
