Download or read book Room Acoustics written by Heinrich Kuttruff and published by CRC Press. This book was released on 2016-10-03 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Well established as a classic reference and specialised textbook, since its first publication in 1973, Heinrich Kuttruff’s Room Acoustics combines detailed coverage with a state of art presentation of the theory and practice of sound behaviour in closed spaces. This sixth edition presents several additional new sections, for instance on the reflection of a spherical wave from a wall, on finite element methods for sound field calculation and on virtual reality, as well as giving an overhaul of the standard material. Particular emphasis is given to the properties and calculation of reverberation, the most obvious acoustical feature of a room. And further key topics include the various mechanisms of sound absorption and their practical application as well as scattering by wall irregularities including pseudo-stochastic structures. Extensive space is given to of psychoacoustic insights and the quality criteria derived from them, along with new procedures for the sensory assessment of concert hall acoustics. As in earlier editions, one full and updated chapter is devoted to the design and performance of electroacoustic systems which nowadays is not just a method for sound amplification but offers many possibilities for correcting acoustic deficiencies and modifying a hall’s natural acoustics.
Download or read book Measurements in Room Acoustics written by Ingo B. Witew and published by Logos Verlag Berlin GmbH. This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Regardless of the field, measurements are essential for validating theories and making well-founded decisions. A criterion for the validity and comparability of measured values is their uncertainty. Still, in room acoustical measurements, the application of established rules to interpret uncertainties in measurement is not yet widespread. This raises the question of the validity and interpretability of room acoustical measurements. This work discusses the uncertainties in measuring room acoustical single-number quantities that complies with the framework of the "Guide to the Expression of Uncertainty in Measurement"(GUM). Starting point is a structured search of variables that potentially influence the measurement of room impulse responses. In a second step, this uncertainty is propagated through the algorithm that determines single-number quantities. A second emphasis is placed on the investigation of spatial fluctuations of the sound field in auditoria. The spatial variance of the sound field in combination with an uncertain measurement position marks a major contribution to the overall measurement uncertainty. To reach general conclusions, the relation between changes in the measurement location and the corresponding changes in measured room acoustical quantities is investigated empirically in extensive measurement series. This study shows how precisely a measurement position must be defined to ensure a given uncertainty of room acoustical single-number quantities. The presented methods form a foundation that can be exibly extended in future investigations to include additional influences on the measurement uncertainty.
Download or read book Influences of external error sources on measurements of room acoustic parameters written by Martin Guski and published by Logos Verlag Berlin GmbH. This book was released on 2015-11-30 with total page 176 pages. Available in PDF, EPUB and Kindle. Book excerpt: Correct and precise measurements of room acoustic parameters are of fundamental importance for subjective room impression characterization and for the physical description of the sound field. This thesis investigates external influences on acoustic measurements and errors of the resulting room acoustic parameters. Theoretical models have been developed to predict these errors and indicate the tolerable limits of the described influences. To validate these models, specially designed room acoustic measurements that separate the individual influence factors have been conducted. Noise has been identified as one of the main influence factors and occurs during every measurement. In this thesis the performance of five commonly used stationary noise compensation methods are systematically analyzed depending on the peak signal-to-noise ratio. Impulsive noise that could also occur during the measurement is investigated separately, as the previously introduced compensation techniques are unsuited to handle the influence. The second part of this thesis analyzes the influence of time variances during measurements. Inter- and intra-measurement temperature changes, air movement, and human-sized scattering objects have been investigated.
Download or read book Room Acoustics written by Heinrich Kuttruff and published by CRC Press. This book was released on 2002-01-04 with total page 369 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprises all acoustic phenomena within enclosures. More specifically it deals with the transmission of speech and music in rooms in which some kind of performance is presented and with the propagation of noise in working environments such as factories or large offices.
Download or read book Acoustics Measurement of Room Acoustic Parameters Reverberation Time in Ordinary Rooms written by British Standards Institute Staff and published by . This book was released on 2008-10-31 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acoustics Measurement of room acoustic parameters Part 2 Reverberation time in ordinary rooms ISO 3382 2 2008 written by and published by . This book was released on 2008 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sound Reproduction written by Floyd E. Toole and published by Routledge. This book was released on 2017-07-28 with total page 956 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sound Reproduction: The Acoustics and Psychoacoustics of Loudspeakers and Rooms, Third Edition explains the physical and perceptual processes that are involved in sound reproduction and demonstrates how to use the processes to create high-quality listening experiences in stereo and multichannel formats. Understanding the principles of sound production is necessary to achieve the goals of sound reproduction in spaces ranging from recording control rooms and home listening rooms to large cinemas. This revision brings new science-based perspectives on the performance of loudspeakers, room acoustics, measurements and equalization, all of which need to be appropriately used to ensure the accurate delivery of music and movie sound tracks from creators to listeners. The robust website (www.routledge.com/cw/toole) is the perfect companion to this necessary resource.
Download or read book Directivity Patterns for Room Acoustical Measurements and Simulations written by Martin Pollow and published by Logos Verlag Berlin GmbH. This book was released on 2015-09-09 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: The acoustics of rooms can be objectively described by the room impulse responses obtained for given transfer paths using measurement or simulation. In practice, the directionally dependent behavior of sources and receivers is often disregarded and thus assumed to be of omnidirectional type. In reality, however, these sources and receivers have specific directivity patterns, which are reported to induce audible differences. In this work a methodology to capture, analyze and process directivity patterns of sources and receivers is described. With the help of surrounding spherical microphone and loudspeaker arrays these directivity patterns are measured to be used in room acoustic applications. Room impulse responses with respect to specific directivity patterns can be realized using compact loudspeaker arrays with known directivity. Applying the results of directivity superposition to the set of measured room impulse responses, the acoustics for specific directivity patterns are found. Using a simulation of the room instead, source and receiver directivity patterns can be included in both wave based and particle based methods. The results of this work facilitate more authentic descriptions of room acoustics for specific source and receiver directivity patterns.
Download or read book Acoustics of Small Rooms written by Mendel Kleiner and published by CRC Press. This book was released on 2014-04-15 with total page 491 pages. Available in PDF, EPUB and Kindle. Book excerpt: Much time is spent working out how to optimize the acoustics of large rooms, such as auditoria, but the acoustics of small rooms and environments can be just as vital. The expensive sound equipment of a recording studio or the stereo in a car or living room is likewise rendered useless if the acoustic environment is not right for them.Changes in wa
Download or read book Audio Metering written by Eddy Brixen and published by CRC Press. This book was released on 2020-05-27 with total page 418 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this comprehensive guide, Brixen takes the reader through the complex and confusing aspects of audio metering, imparting the knowledge and skills needed to utilize optional signal levels and produce high-quality audio. Covering all aspects of this fundamental subject, Audio Metering: Measurements, Standards and Practice begins with the basics, such as audio definitions and digital techniques, and works up to more complex topics like hearing and psychoacoustics. This revised and expanded third edition includes: Updated information on loudness metering, covering both existing and new standards. Definitions of terms such as LKFS, LUFS, gating, LRA. Explanations of signal types and musical sounds and structures. Further details on immersive audio. Skills needed for both small-room acoustics and large auditorium sound design without loss of sound quality. Descriptions of measurement signals and systems for audio and acoustic sound. A chapter on listening tests from small set-ups to large-scale comparisons of PA/SR-systems. Packed full of valuable information with a wide range of practical applications, this is the essential reference guide to audio metering for technicians, engineers, and tonmeisters, as well as sound designers working with acoustics, electroacoustics, broadcast, studio recording, sound art, archiving, audio forensics, and theatrical and live-audio setups.
Download or read book A Room Acoustics Measurement System Using Non invasive Microphone Arrays written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis summarises research into adaptive room correction for small rooms and pre-recorded material, for example music of films. A measurement system to predict the sound at a remote location within a room, without a microphone at that location was investigated. This would allow the sound within a room to be adaptively manipulated to ensure that all listeners received optimum sound, therefore increasing their enjoyment. The solution presented used small microphone arrays, mounted on the room's walls. A unique geometry and processing system was designed, incorporating three processing stages, temporal, spatial and spectral. The temporal processing identifies individual reflection arrival times from the recorded data. Spatial processing estimates the angles of arrival of the reflections so that the three-dimensional coordinates of the reflections' origin can be calculated. The spectral processing then estimates the frequency response of the reflection. These estimates allow a mathematical model of the room to be calculated, based on the acoustic measurements made in the actual room. The model can then be used to predict the sound at different locations within the room. A simulated model of a room was produced to allow fast development of algorithms. Measurements in real rooms were then conducted and analysed to verify the theoretical models developed and to aid further development of the system. Results from these measurements and simulations, for each processing stage are presented.
Download or read book Acoustics written by International Organization for Standardization and published by . This book was released on 2008 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Room Acoustics written by Heinrich Kuttruff and published by CRC Press. This book was released on 2024-07-24 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: Well established as a classic reference and specialized textbook since its first publication in 1973, Room Acoustics combines detailed coverage with a state-of-the-art presentation of the theory and practice of sound behaviour in enclosed spaces. This seventh edition is developed to cover new measurement and simulation techniques, including sections on spatial and directional analysis and on recent psychophysical experimental approaches to determining auditory perception in concert halls. Other important topics include the various mechanisms of sound absorption and their practical application, as well as scattering through wall corrugations. The design and performance of sound reinforcement systems is also updated. As in previous editions, special emphasis is placed on the properties and calculation of reverberation. The book particularly suits graduate students in the field, acoustical engineers, and architects.
Download or read book Building Acoustics written by Tor Erik Vigran and published by CRC Press. This book was released on 2014-04-21 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: Building or architectural acoustics is taken in this book to cover all aspects of sound and vibration in buildings. The book covers room acoustics but the main emphasis is on sound insulation and sound absorption and the basic aspects of noise and vibration problems connected to service equipment and external sources. Covering all aspects of sound and vibration in buildings, this book explores room acoustics, sound insulation, and noise and vibration problems connected to service equipment and external sources.
Download or read book Acoustics written by International Organization for Standardization and published by . This book was released on 1997 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book ISO 3382 1 written by and published by . This book was released on 2009 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Room Acoustics Fifth Edition written by Heinrich Kuttruff and published by CRC Press. This book was released on 2009-06-02 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since publication of the first edition in 1973, this professional and scientific reference has become the standard work in the field, providing detailed analysis of the state of the art in room acoustics. It outlines the theory and practice of sound behaviour in enclosed spaces. Particular emphasis is given to the properties and calculation of reverberation, the most obvious acoustical feature of a closed room. Further key topics include the mechanisms of sound absorption and psychoacoustical factors, from which design parameters and figures of merit are derived. Two chapters are devoted to practical questions such as measurement techniques and the procedures of room acoustical design. The interaction between a room's acoustic properties and its electroacoustic systems is also considered, and refined systems for optimizing listening conditions in a room are presented. This edition includes a new list of symbols, and updated sections include the measurement of the impulse response including a discussion of distortions, sound propagation as a diffusive process and scattering by wall irregularities.
