Spectrograph Law and Legal Definition

Spectrograph is an electromagnetic instrument analyzing sound. A spectrograph is mainly used to detect human voice. Spectrograph separates a sound into three elements :

1. Frequency,

2. Time lapse,and

3.Intensity.

Spectograph helps in producing a final voiceprint. A spectrograph is mainly used for voice identification.[ United States v. Drones, 218 F.3d 496 (5th Cir. Tex. 2000)]. Spectrograph is also known as polychromator.