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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
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.