When speaking to infants, adults often produce speech that differs systematically from that
directed to other adults. To quantify the acoustic properties of this speech style across a wide …

Early language environment plays a critical role in child language development. The
Language ENvironment Analysis (LENA™) system allows researchers and clinicians to …

When interacting with infants, humans often alter their speech and song in ways thought to
support communication. Theories of human child-rearing, informed by data on vocal …

Human infant vocalization is viewed as a critical foundation for vocal learning and language.
All apes share distress sounds (shrieks and cries) and laughter. Another vocal type, speech …

Vowel mergers are some of the most frequently studied sound changes. Their realization in
the speech of individuals as well as their spread through a community raise a number of …

Infant directed speech (IDS) is a speech register characterized by simpler sentences, a
slower rate, and more variable prosody. Recent work has implicated it in more subtle …

Speech output technology is finding widespread application, including in scenarios where
intelligibility might be compromised–at least for some listeners–by adverse conditions …

Infants segment words from fluent speech during the same period when they are learning
phonetic categories, yet accounts of phonetic category acquisition typically ignore …

Exaggeration of the vowel space in infant-directed speech (IDS) is well documented for
English, but not consistently replicated in other languages or for other speech-sound …

The development of the ability to categorize speech sounds is often viewed as occurring
primarily during infancy via perceptual learning mechanisms. However, a number of studies …