Pulse Song (AUDIO)
Caption
When fruit flies court, the male chases the female as he vibrates his wings to produce roughly five-second serenades, or "bouts." The song is composed of a buzzing sound known as a "sine" and a purring sound called a "pulse." This audio file is of a pulse. The male switches off between the pulse and sine every several milliseconds, so that the two sounds seem almost simultaneous.
Credit
Audio file courtesy of Philip Coen, Princeton Neuroscience Institute
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