## Automatic Bird Song Recognition |

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Page 14

The part of a signal from one upward zero crossing to the next is termed an

sine wave (a "whistle" in the [Gr] terminology) as contrasted with a harsher

squawk ...

The part of a signal from one upward zero crossing to the next is termed an

**excursion cycle**. The "scatter" feature exists to indicate if a chirp is a nearly puresine wave (a "whistle" in the [Gr] terminology) as contrasted with a harsher

squawk ...

Page 53

... then the fraction of

differing by one from the preceding

24s). Proof: The

... then the fraction of

**excursion cycles**(after the digitization) that have lengthdiffering by one from the preceding

**excursion cycle's**length is * if #&#, otherwise24s). Proof: The

**excursion cycle**(EC) lengths will be a mix. 53 *rado. ...Page 54

Proof: The

the ratio of the sampling rate to the

smallest number larger than the ratio, x+1. In any sequence of b sample points, a

full ...

Proof: The

**excursion cycle**(EC) lengths will be a mix of the largest number belowthe ratio of the sampling rate to the

**excursion cycle**length, call it x, and thesmallest number larger than the ratio, x+1. In any sequence of b sample points, a

full ...

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### Common terms and phrases

60 Figure acoustic algorithm analysis average amplitude avian bird song bird species California Quail calls CDFE cepstral cepstral peak Cepstrum chirp feature vectors chirp list Clark's Nutcracker comparison Computer congruent corresponding described in Section detected difference dynamic time warping entire song excursion cycle Figure 11b formula Frequency Frequency Duration glottal Greenewalt harmonics Hence High Low High House Finch human speech recognition I I I individual inter-note distances internal tympaniform membranes Itakura distance length Linear Prediction Low High Low magnitude Markov models noise Olive-sided Flycatcher phase phonemes present point range recognition system recordings represented ripples sample points sampling rate Scrub Jay segment of speech sequence of labels signal similar sine wave sonagrams song feature Song Sparrow sound spectrum squawk Steller's Jay subsource Swainson's Thrush syntactic Theorem thesis trachea Typical upward zero crossing vibration vocal tract Warbling Vireo waveform Western Meadowlark whistled White-crowned Sparrow