Glossary beginning with L
- labia vocalia
See vocal cords.
"An aggregation of males gathered to perform competitve displays to attract and compete for females." 
- . Predator-Prey Interactions: Co-evolution between Bats and their Prey. Springer; 2016.
"of a quantity related to power: the ratio, expressed in decibels, of the magnitude of the quantity to a specified reference magnitude.
Note 1: the word level is frequently used in compound terms such as "intensity level" and "sound pressure level" to relate a magnitude to a common reference magnitude or "zero level".
Note 2: in the absence of any statement to the contrary, the reference magnitude for stating sound pressure levels in air shall be 0.0002 dyne/sq.cm, and that for sound intensity levels 10-16watt/sq.cm." 
- . Glossarial Index. In: Acoustic Behavior of Animals. Acoustic Behavior of Animals. Elsevier; 1963.
Linear-frequency cepstral coefficients
See Calling song
- low-pass filter
"A circuit (electronic or neuronal) which only permits the transmission of low-frequency signals." 
- . Arthropod Bioacoustics: Neurobiology and Behaviour. Ithaca, New York: Comstock; 1989.