Architectural Acoustics Illustrated by Michael Ermann

By Michael Ermann

Unite the technological know-how of sound and the rules of layout to augment any space

Architectural Acoustics Illustrated interprets the quantitative and qualitative content material of acoustics into the image language of structure. This highly-visual advisor contains over 350 illustrations that define the physics of sound and the simplest layout practices for restricting or mitigating noise in constructions through the use of the newest in fabrics and strategies. every one bankruptcy encompasses a precis list of layout directions to aid hinder error and oversights, and the Instructor's web site deals video animations demonstrating acoustical suggestions. Designed as a "first glance" on the interplay of sound and house, the ebook explains the rules of architectural acoustics and their functional purposes, delivering a entire advisor for designing with acoustics in mind.

Architectural acoustics is greater than simply live performance halls – it can be certain development placement, department of inside house, external development, or even siting. whilst addressed early within the layout procedure, the ensuing house might be freed from undesirable sound and advertise reliable listening to; if left unaddressed, the issues with the gap may end up in proceedings and dear post-construction remediation. Architectural Acoustics Illustrated is helping designers resolve such a lot acoustical difficulties upfront, by means of permitting readers to:

  • Understand the actual technology underlying the habit of sound
  • Consider the interactions of sound and area within the preliminary layout approach
  • Mitigate development sounds akin to these produced via HVAC and plumbing with early layout planning
  • Design areas for listening, and contain acoustics most sensible practices into each plan

The hugely visible structure of the ebook is helping readers seize advanced innovations quick, and thorough dialogue of every concept's real-world program ties the technological know-how at once into the layout procedure. All layout execs have to have a primary knowing of acoustics, and Architectural Acoustics Illustrated is a complete, functional advisor in an easy-to-read layout.

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Extra resources for Architectural Acoustics Illustrated

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More‐absorbent surfaces attenuate sound energy through loss to friction, but so do more surfaces of the same absorption profile. 04), multiply each absorption coefficient by its corresponding surface area, and sum them up. 04 × 500 sf) The total sound absorption in the office measures 26 sabins. 90), the total absorption climbs more than fourfold to 112 sabins. 04), we’ve added an additional 4 sabins for a total of 116. For reference, a small sound‐reflective room may have a room constant on the order of 25 sabins, and a large, sound‐absorbent room may have a room constant on the order of 5,000 sabins.

In the same way, middle‐ and high‐frequency sounds, whose wavelengths are short compared to building surfaces, can be easily modeled in geometric acoustics, using rays and arrows. That model breaks down and loses its usefulness when the wavelengths are long relative to the room surfaces. Modal low‐frequency sounds behave more like waves and less like rays. They are more difficult to model in space, yet more sensitive to the geometric particulars of the source, surface, and receiver locations. At low frequencies, two adjacent seats in a theater may experience remarkably different sound fields—or they may experience almost identical sound fields.

Materials with lower absorption coefficient values are smooth, dense, flush‐mounted, and massive. 20 are generally considered sound‐reflective materials. 40 to be considerable. 00. This is because of a quirk in the way surface samples are tested in laboratories. 00. Sound Absorption 29 Types of Sound Absorbers Absorbers come in porous, fibrous, membrane, panel, and resonant varieties, and in composite combinations of those varieties. Porous absorbers (and a subset of porous absorbers, fibrous absorbers)—collectively termed “fuzz”—include glass fiber, mineral fiber, fiberboard, acoustical ceiling tile, cotton, pressed wood shavings oriented to foster pores, cotton, velour, felt, and open‐ celled foams.

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