Detectors 066
Detectors 066 : Particle Detectors: (4.3) DSP Detectors: DSP bat detectors aim to provide an acoustically accurate portrayal of bat calls by using a digital signal processor to map bats' ultrasounds signals to audible sounds; different algorithms are being used to accomplish this, and there is active development and tuning of algorithms going on. One strategy called "frequency shifting" uses a FFT signal analysis in order to find the main frequency and signal power, then using digital simulation a new audible wave is synthesized from the original one divided by a defined value. The processes of Frequency Division and Heterodyne conversion can also be performed digitally
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