By Marshall Long
THE e-book on acoustics for non-acousticians. Comprehensive,concise, and entirely obtainable for a person with an curiosity in acoustics. THE "go to" textual content for audio engineers, sound designers, and musicians who are looking to higher comprehend the actual international that without delay results their paintings.
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Extra info for Architectural Acoustics (Applications of Modern Acoustics)
Although there was a general use of geometry and other branches of mathematics during the second and third millennia BC, there was no attempt to deduce these rules from ﬁrst principles in a rigorous way (Dimarogonas, 1990). The origination of the scientiﬁc method of inquiry seems to have begun with the Ionian School of natural philosophy, whose leader was Thales of Miletos (640–546 BC), the ﬁrst of the seven wise men of antiquity. While he is better known for his discovery of the electrical properties of amber (electron in Greek), he also introduced the logical proof for abstract propositions (Hunt, 1978), which led in time to the formal mathematics of geometry, based on the theorem-proof methods of Euclid (330–275 BC).
The galleries surrounding the central court were three tiers high with a roofed stage, which looked like a thatched apron at one end. Performances were held during the day without a curtain or painted backdrop. The acoustics of these early theaters was probably adequate. The side walls provided beneﬁcial early reﬂections and the galleries yielded excellent sightlines. The open-air courtyard reduced reverberation problems and outside noise was shielded by the high walls. It is remarkable that such simple structures sufﬁced for the work of a genius like Shakespeare.
Ten years later the Neues Gewandhaus was built to provide a larger space for concerts in Leipzig. After it was completed, the old Altes Gewandhaus was torn down. The building was based on a design by the architects Martin K. P. Gropius (1824–1880) and Heinrich Schmieden (1835–1913) and was ﬁnally completed in 1882 after Gropius’ death, remaining extant until it was destroyed in World War II. A sketch of the hall is shown in Fig. 18. 9 m (49 ft) high ceiling. 55 seconds was less than that of the other three, making it ideal for the works of Bach, Mozart, Haydn, and other Classical chamber music.
Architectural Acoustics (Applications of Modern Acoustics) by Marshall Long