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8
votes
2
answers
177
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What amplitude do you use for playbacks?
When performing playback experiments with birds, is there a biologically relevant source level for song playbacks? … What happens if the playback source level is too high? Is it transformed into a super-aggressive signal? And can we compare results obtained with playbacks of different amplitudes? …
7
votes
1
answer
56
views
Reliable lousdpeaker for low frequency noise playback?
For an experiment on the impact of traffic noise on bird behaviour, I tried to playback some low frequency traffic noise with a fixed amplitude. … While (trying to) adjust the noise amplitude, I realized that the loudspeaker was quite unreliable: the amplitude of my playback varied by 3-10 dB from one day to the next although I had not changed any …