Table 4 Measured and calculated acoustic parameters

*F₀S (KHz)

Freq. of F₀ with highest amplitude at start

Osc. & PS

*F₀Peak (KHz)

Freq of F₀ with highest amplitude at max of F₀

Spect. & PS

*F₀E (KHz)

Freq. of F₀ with highest amplitude at end

Spect. & PS

SB_Max

Frequency at 20 dB above F₀S

PS

SB_Min

Frequency at 20 dB below F₀S

PS

S (ms)

Start time of call

Osc.

P (ms)

Time of highest point of F₀

Spect.

E (ms)

End time of call

Spect.

N (ms)

Start time of next call

Osc.

Calculated parameters

Definition

Calculation

*Start Bandwidth (KHz)

Bandwidth of F₀ at start

SB_Max – SB_Min

*Call Duration (ms)

Time between start and end of call

E – S

*Time to Peak (ms)

Time between start and peak of call

P – S

*Inter-call Interval (ms)

Time between end of the call and start of the next call

N – E