Fig. 14. Drawing of part of the right wing of Teleogryllus oceanicus to show the effect on the loudness of the sound produced by applying damping with a sharply pointed rod at the points shown as red circles. The wing was driven by the vibration probe attached to the lateral field (blue circle) after excision of the harp at its resonant frequency (f_o; 5.15 kHz). The sound output, made with the probe microphone at the anal area, is expressed in dB relative to the sound output of the undamped wing.

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