In addition, sensitivity analyses, which varied the prices of bortezomib and thalidomide, the proportion of patients sing bisphosphonates, frequencies of chronic events, frequency of skeletal events, and median survival by ±25%, indicated that these results were robust and reproducible (Mehta et al. 2004).
These results suggest that birds that sing at frequency bands shared by nocturnal insects avoid acoustic masking by delaying song start times.
Interesting tip for the more musically inclined: You can also break the glass by singing its resonant frequency an octave higher (twice the frequency) or an octave lower (half the frequency).
Furthermore, it is suitable for both dual-frequency and sing-frequency receivers.
Individuals that sang at high frequencies did so for short periods only, whereas individuals singing at low frequencies did so for both short and long periods.
In our particular case, individuals that sang at high frequencies did so for short periods only, whereas individuals singing at low frequencies did so for both short and long periods (Fig. 2).
In contrast to expectations, we found that birds singing within the same frequency range did not temporally partition acoustic space during the chorus.
Predator-prey arms races [27] have been proposed to account for important aspects of signaling behavior including call duration [20], [28], the timing and frequency of singing [29], and song structure [30],[31],[32 p. 97].
Thus, skylarks seem not to modify given syllables to lower the frequency when singing reactively.
When miles and miles of water separates you from your nearest neighbor or potential mate, singing in very low frequencies is the only way to "see" and talk to one another across a room. .
