Цитата:
Сообщение от Andbeyond
"When a source creates a sound wave in a room or auditorium, observers hear not only the sound wave propagating directly from the source but also the myriad reflections from the walls, floor, and ceiling. These latter form the reflected wave, or reverberant sound. After the source ceases, the reverberant sound can be heard for some time as it grows softer."
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Now you have shown the accuracy of Encyclopжdia Britannica about the diffuse field. In your quote there is not a single word about a
diffuse field.