Working for birds in Africa

Sonograms: how to use them

p 72-73

The sound spectrogram, or sonogram, is an important method of describing bird sound, being more detailed and objective than the phonetic descriptions one reads towards the end of the species account in most field guides. A sonogram is particularly useful for reference when comparing sounds: it is far easier to compare the subtleties of two bird's vocalisations by looking at both their sonograms simultaneously than by listening to them one after the other.

Richard Ranft

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