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Ultrasounds of several bats flying over my roof at Sevilla, South Spain. No idea on the species, they were quite large (wingspan around 30 cm). I lowered the pitch of the sound from 20-22 kHz to 7 kHz to make it audible. Rode NT4 > Shure FP24 > iRiver H120 (rockbox) / ultrasonidos de unos murcielagos bastante grandes que vuelan sobre la azotea de mi casa en Sevilla. He bajado el tono original de 21 hasta 7 KHz para que se pueda oir
Type
Flac (.flac)
Duration
0:49.482
File size
1.8 MB
Sample rate
44100.0 Hz
Bit depth
16 bit
Channels
Stereo
17 years, 10 months ago
These bat recordings are great! Thanks for lowering to 7KHz! ... the one Pitx lowered to around 10-11 KHz still left parts inaudible for me. Some bats, I understand, call at around 40 Khz and I think an ultrasonic detector would be needed - but how to record the output? Probably need a heterodyne process.