Bioacoustics & Ecoacoustics Glossary

Source-filter theory

https://glossary.acousti.cloud/source-filter-theory

en

The theory that the production of sound signals in mammals (and most four-legged vertebrates) is based on an anatomical structure producing a sound wave (the source: larynx in mammals, syrinx in birds), and a system of pipes and cavities modifying this wave (the filter: vocal tract).

Reference: [1] Mathevon (2023), The Voices of Nature: How and Why Animals Communicate, pp. 305–308.