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Not much text, some more papers...

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j-hartling
2026-01-13 15:42:48 +01:00
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@@ -130,12 +130,22 @@ forewings~(\bcite{helversen1977stridulatory}, \bcite{stumpner1994song},
\bcite{helversen1997recognition}). Every tooth that strikes the vein generates
a brief pulse of sound. Multiple pulses make up a syllable; and the alternation
of syllables and relatively quiet pauses forms a characteristic, through noisy,
waveform pattern. Species-specific song recognition depends on certain temporal
song parameters, such as the slope of pulse
onsets~(\bcite{helversen1993absolute}). The amplitude modulation of the song
already carries sufficient information to allow for successful
recognition~(\bcite{helversen1997recognition}). Since grasshoppers are
ectotherms, the temporal structure of their songs warps with temperature.
waveform pattern. Song recognition depends on certain temporal and structural
properties of this pattern, such as the slope of pulse
onsets~(\bcite{helversen1993absolute}), the accentuation of syllable
onsets~(\bcite{balakrishnan2001song}, \bcite{helversen2004acoustic}), and the
ratio of syllable duration to pause duration~(\bcite{helversen1972gesang}).
This signal design
The
amplitude modulation, or envelope, of the song is sufficient for successful
recognition~(\bcite{helversen1997recognition}). Because grasshoppers are
poikilothermic, the temporal structure of their songs warps with
temperature~(\bcite{skovmand1983song}), which poses a major challenge for the
auditory system.
Songs = Amplitude-modulated (AM) broad-band acoustic signals\\