chirp

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chirp

[chərp]
(communications)
An undesirable variation in the frequency of a continuous-wave carrier when it is keyed.
The sound heard in a code receiver when the transmitted carrier frequency is increased linearly for the duration of a pulse code.
References in periodicals archive ?
The mute males seem to be coping, at least temporarily, by clustering around the few remaining chirpers, Zuk and her colleagues report in a Biology Letters paper released online.
where you can't compete in the cricket spitting contest without popping a few of the chirpers.