tonal scale वाक्य

In a more simple way to explain, a histogram is a bar graph, whose X-axis represents the tonal scale ( black at the left and white at the right ), and Y-axis represents the number of pixels in an image in a certain area of the tonal scale.
-- The " songs " of humpback whales follow many of the same, precise rules that are nearly universal in human music, including the nature of the tonal scale, the way themes are introduced and varied, the use of percussive as well as melodic sounds, and the structures of rhythms and phrasing.