[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

ITU worst case listening position - how?


I hope someone from this list can help out, the ITU people could not sufficiently answer my question.

The ITU-R BS.1116-1 recommendation "METHODS FOR THE SUBJECTIVE ASSESSMENT OF SMALL IMPAIRMENTS IN AUDIO SYSTEMS INCLUDING MULTICHANNEL SOUND SYSTEMS" (p.18, Figure 7) defines the typical 5 channel surround loudspeaker setup including the best (central) and worst case listening positions.

Here my question:

What are the underlying assumptions/calculations that make these specific listening positions to the "worst case listening positions" ?

The text on the same pages also defines the recommended listening area which has a radius of 0.7 m around the central position. I am also wondering where this number comes from.

thanks for any comment.