English

Noun

xenophone ‎(plural xenophones)

1. (phonetics) A sound in speech that is not native to the language being spoken; a sound from a foreign language

References

The term was introduced in: Robert Eklund & Anders Lindström. 1998. How To Handle “Foreign” Sounds in Swedish Text-to-Speech Conversion: Approaching the ‘Xenophone’ Problem. Proceedings of The International Conference on Spoken Language Processing, 30 November–5 December 1998, Sydney, Australia. Paper 514, vol. 7, pp. 2831–2834.

Also see: http://xenophones.info