Heisenberg matrix mechanics HMM is, in a way, a subset of Schrödinger mechanics SM.

HMM and SM are not adequate to describe sound energy density fields in audio rooms.

On the other hand, B matrix mechanics, [1,2] which is a product of Cairo techniques theory, can accurately predict the sound intensity in audio rooms and further rigorously proves the imperial formula of Sabines.

1- Theory and design of audio rooms -A statistical view

, IJISRT Review, Researchgate, July 2023.

2-Theory and design of audio rooms-Reformulation of Sabine's formula, IJISRT Review, Researchgate, October 2021.

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