Meaning of diacoustic | Babel Free

Definitions

Relating to diacoustics.

not-comparable

Examples

“The archbishop of Armagh (in Nᵒ 156, Philos. Trans.) compares hearing with vision; and as the latter is divided into direct⟳, reflected, and refracted vision, so in like⟳ manner he divides the former into three parts, and considers not only direct⟳ and reflected sounds, which have⟳ been long known, but also refracted ones: for, as he observed that former ages had, in a great measure⟳ perfected the doctrine of vision by optic, catoptric, and dioptric inventions, so likewise he did not doubt⟳, but that the doctrine of sounds, both with respect⟳ to the object, and the medium or organ, might be broutht to perfection by acoustic, catacoustic and diacoustic, or ( as he denominates them both ways ) by phonic, cataphonic, and diaphonic instruments.”

“The only hypothesis left therefore is that of diacoustic refraction; by which the sound-beam from one origin is bent and lifted over the observer, while from an opposite origin the refraction is in a reversed direction; and such a quality in the moving air is referable to no other observed condition but that of its motion, that is to the influence⟳ of the wind.”

“These considerations prepare⟳ us for the inference that Montlhe/ry, on the occasion referred to, must have⟳ been surrounded by a highly-diacoustic atmosphere; while the shortness of the echoes at Villejuif shows that the atmosphere surrounding that station must have⟳ been, in a high degree, acoustically opaque.”

CEFR level