left front channel Center channel right front channel left rear channel right rear channel display colors display colors display colors display colors display colors display colors display colors display colors display colors display colors Correlator L/C Correlator L/C Correlator C/R Correlator C/R Correlator L/R Correlator L/R Correlator L/LS Correlator L/LS Correlator R/RS Correlator R/RS Correlator LS/RS Correlator LS/RS Correlator L/RS Correlator L/RS Correlator C/LS Correlator C/LS Correlator C/RS Correlator C/RS Correlator R/LS Correlator R/LS
  
  

Multicorrelator

  
  
  
Example: 5.1 Surround Format

Move the mouse accross the display elements to get the corresponding descriptions.
  

  
  
  
Identical signals in both channels of a pair have a correlation of +1 (maximum positiv peak, green), completely unrelated signals have a correlation of 0 (no peak, white). Normal stereo mixes mostly show correlation values between 0.3 and 0.7. When both channels carry identical signals but one channel's polarity is switched (180 phase), the correlation will be -1 (maximum negative peak, red).