Method for visualizing the directional sound activity of a multichannel audio signal

摘要

The invention relates to a method for visualizing a directional sound activity of a multichannel audio signal, comprising:
receiving input audio channels, spatial information being associated with each one of said channel,performing a time-frequency transformation of said input audio channels,for each one of a plurality of frequency sub-bands, determining a directional sound activity vector from said transformed input audio channels,determining a contribution of each one of said directional sound activity vectors within sub-divisions of space on the basis of directivity information related to each sub-divisions of space,for each sub-division of space, determining directional sound activity level within said sub-division of space by summing said contributions within said sub-division of space,displaying a visualization of the directional sound activity of the multichannel audio signal by a graphical representation of directional sound activity level within said sub-division of space.

主权项

1. A method for visualizing a directional sound activity of a multichannel audio signal, comprising:
receiving input audio channels, spatial information being associated with each channel of said multichannel audio signal, performing a time-frequency transformation of said input audio channels, for each one of a plurality of frequency sub-bands, determining a directional sound activity vector from said transformed input audio channels, wherein said sound activity vector of a frequency sub-band associates sound activity levels of said transformed input audio channels within said frequency sub-band to spatial information associated with said channels of said multichannel audio signal, determining a contribution of each one of said directional sound activity vectors within sub-divisions of space on the basis of directivity information related to each sub-divisions of space, for each sub-division of space, determining directional sound activity level within said sub-division of space by summing said contributions within said sub-division of space, displaying a visualization of the directional sound activity of the multichannel audio signal by a graphical representation of directional sound activity level within said sub-divisions of space.