Imagine hearing a lion roaring, a baby crying or guitarist playing hard rock. These sounds contain perceptually harsh, attention-grabbing vocal elements, corresponding to nonlinear phenomena, that are hard to ignore. These acoustic phenomena - which are widespread in vocal repertoires of vertebrates and have recently received considerable interest - have yet never been the topic of a comprehensive review. This special issue brings together a collection of studies that reflect on past research, introduce new ideas and tools, and explore future directions for this growing field of study.

Read a blog post written by guest editor, Dr Mathilde Massenet.

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