sound spectrograph

In modern-day biology, bird song is typically analyzed using a sound spectrograph.

For example, they changed their minds on sound spectrographs, which compare the voice of a suspect with that of a criminal whose voice has already been recorded.

The Analysis & Resynthesis Sound Spectrograph [1] is an example of a computer program that attempts to do this.

I didn't know who the others were but obviously one of them was the head of the CIA over here and the two odd-looking types must be the technicians looking after the tape-deck and the sound spectrograph on the desk.

There, the renowned consultant in voice identification, using his sound spectrograph, applied his equipment to selected words Tynan had spoken in his network interview and those same words when he had uttered them on the Ishmael Young tape.

Wheye and Kennedy suggest that the picture may represent a sound spectrograph, with the heads of the birds perhaps representing musical notes and the size, shape and direction of their tongues suggesting the "volume, intensity, degree of trilling, and degree of shrillness of their voices".