whistled language
whistled language is a language or whistling.
Also recorded as whistle speech.
Overview
Emulation of speech by whistling.
In detail
whistled language is a language or whistling.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“Whistled language”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q2737212: whistled language
Consult the source