Post by Phil Atkin

Synthetic PIPPYG with interspersed socials. This is a user-defined bat pass using the latest TestFlight build of Bat Synth that supports different harmonic content in the "tick" and "tock" calls for "alternating" bats, functionality that has been hijacked here to let the echolocation call be pure fundamental, the social calls having strong 2nd and third harmonics. Definition file : Species   : PIPPYG social dB boost   : 13.0  H2      : -199.0  H3      : -199.0      Tock H2   : -21.0  Tock H3   : -42.0      Interval   : 55.0 Variance   : 0.09, 0.12, 0.07 Tick data  : 10, 1000.0, 1.0       2.188825, -199, 81.5,       2.189,  -61.2, 74.85,       2.1893, -42.4, 68.34,       2.18947, -34, 63.08,       2.189857, -29, 59.786,       2.190902, -24, 57.43,       2.192437, -20.3, 56.647,       2.194314, -23.2, 56.09,       2.196234, -33, 55.86,       2.2,   -199, 55.7, Tock data : 42, 1000.0, 1.0       3.577838, -199, 48.56,       3.5779,  -53, 39.54,       3.57826, -26.1, 32.11,       3.57888, -20.7, 27.98,       3.579302, -22.2, 25.09,       3.579798, -27.1, 22.096,       3.580468, -29.1, 19.51,       3.581782, -33.9, 17.34,       3.582973, -120, 16.83,       3.584,  -120, 16.83,       3.585,  -120, 37.58,       3.586,  -120, 37.99,       3.58657, -21.8, 36.24,       3.587066, -23.8, 34.07,       3.587612, -18.8, 30.769,       3.588604, -13.9, 26.329,       3.589894, -20.9, 21.58,       3.590862, -23.1, 19.1,       3.5922, -37, 18.79,       3.593, -120, 18.79,       3.594,  -120, 18.79,       3.595,  -120, 40,       3.596,  -120, 39.545,       3.596865, -24.9, 37.69,       3.597436, -24.8, 35.21,       3.59771, -20.6, 31.9,       3.598577, -14.9, 27.9,       3.59967, -15.4, 23.64,       3.601033, -21.3, 21.47,       3.60267, -24.4, 21.373,       3.6055, -120, 23.438,       3.6059, -120, 23.438,       3.608,  -120, 40,       3.609,  -120, 39.545,       3.610865, -24.9, 37.69,       3.611436, -24.8, 35.21,       3.61171, -20.6, 31.9,       3.612577, -14.9, 27.9,       3.61467, -15.4, 23.64,       3.620033, -21.3, 21.47,       3.62167, -24.4, 21.373,       3.6355, -199, 21.838, Alt data : 88 0,1,0,1,0,1,0,1, 0,1,0,1,0,1,0,2, 0,1,0,1,0,1,0,1, 0,1,0,1,0,2,0,1, 0,1,0,1,0,1,0,1, 0,1,0,1,0,2,0,0, 0,1,0,1,0,1,0,1, 0,1,0,1,0,2,0,0, 0,1,0,1,0,1,0,1, 0,1,0,1,0,2,0,1, 0,1,0,1,0,1,0,2, End The bat calls here look and sound weirdly sterile, and in fact they are - if you stuck a bat in an anechoic chamber their calls would sound like this. But push this into an amp and speaker and receive in a detector and it's pretty compelling.