0 past simple and past participle of whistle
1 to make a high sound by forcing air through a small hole or passage, especially through the lips, or through a special device held to the lips:
She always whistles in the bath.
In this example, the shape of the whistled signal envelope parallels that of the spoken signal.
He found no transposition of consonants or vowels, and concluded : 'in the whistled language the absence of the segmental features gives opportunity for ambiguities'.
The reader may also have noticed finer points of agreement between the signal envelopes of the spoken and whistled consonants.
Besides written documentation, there exist recordings of music from various parts of the world which include excerpts of whistled speech.
Thus, as in formant-based whistled languages, the amplitude-modulation frame is transposed.
