Cross-Linguistic Nasalance Comparisons: A Review of Speech Sample Sets and Preliminary Consideration of Effect of Lexical Tone.

Introduction: Nasalance is an acoustic representation of perceived nasality with proven clinical and research utility. Its validity is contingent on appropriate speech sample sets and distinct normative databases based on known impact factors such as language and phonetic environment, but little is known about the potential effects of lexical tone on nasalance. Its use in international cross-linguistic studies necessitates definition and added considerations of speech sampling protocol.

Effect of Age and Gender on Nasalance Across the Lifespan: A Systematic Review.

The Nasometer is a widely used clinical and research tool with diagnosis and outcome measurement utility. The objective of this study was to systematically examine the effect of age and gender on nasalance across the lifespan. A systematic review was performed according to the Preferred Reporting Items for Systematic Reviews (PRISMA 2020).