The Crest Trigger releases when the ratio of the loudest frequency (Xmax) and noise (XRMS) is higher than the selected Crest faktor C:
Advantages Crest Advanced:
Very sigh sensitivity (with default settings) Sensitivity can be adjusted easily Upper and lower trigger frequency can be set Reduces triggering due to interference noise up to 25 kHz
Advantages Crest:
High sensitivity (with default settings) Sensitivity can be adjusted accurately Lowest operating frequency can be set (HP)
Disadvantages:
Responds to any loud, narrow-band sound, eg to technical sounds and insects
Settings Crest Advanced (Values mean default values):
Min. Crest = 7, lower values trigger easier Min. frequency = 15 kHz Max. frequency = 155 kHz
Settings Crest (Values mean default values):
Min. Crest = 6, lower values trigger easier Min. RMS = 2, lower values trigger easier Min. Peak = 2, lower values trigger easier Min. frequency (HP) = 6 (-> 7 kHz)