timbre

(music) the distinctive property of a complex sound (a voice or noise or musical sound); "the timbre of her soprano was rich and lovely"; "the muffled tones of the broken bell summoned them to meet"

विद्या बालन की आवाज़ में एक स्वर विशेषता है जो 'तुम्हारी सुलू' में विशाल संभावनाओं को प्रस्तुत करती है।

Vidya Balan's voice has a rich timbre that presents immense possibilities in 'Tumhari Sulu'.