Figure 1 - uploaded by M. Clara P. Amorim
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Oscillogram (A) and sonagram (B) of a courtship sound produced by a Pseudotropheus zebra male. Oscillogram was filtered with a 60 Hz high-pass filter and the sonogram used a Hamming window and a filter bandwidth of 200 Hz.  

Oscillogram (A) and sonagram (B) of a courtship sound produced by a Pseudotropheus zebra male. Oscillogram was filtered with a 60 Hz high-pass filter and the sonogram used a Hamming window and a filter bandwidth of 200 Hz.