R&D Report 1981-01 : Revision of the sound insulation requirements in broadcasting studio centres. R. Walker The BBC sound insulation requirements within studio centres have been based on a report published in 1968. Since that time, there have been new measurements of sound pressure levels in studios, control rooms and other areas, and new background noise level criteria have been proposed for programme areas. Both of these factors affect the amount of sound insulation which is necessary to...
Topics: insulation, sound, noise, studio, criteria, frequency, pressure, level, criterion, background,...
R&D Report 1990-13 : Proving experiments on an Acoustic Transmission Suite and its reverberation room. G.D. Plumb An acoustic transmission suite is a facility used for the laboratory measurement of the airborne sound transmission properties of partitions. It consists of a pair of adjoining rooms, the source room and the receive room, with a hole for the construction of the test partition in their common walls. The building is designed to minimise the sound power flow by paths other than...
Topics: receive, room, test, source, sri, sound, reverberation, wall, frequency, cavity, band centre,...
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Welcome to Your City, Your News. Here's what's happening in the city of El Segundo. 00:25 City Council Meeting Budget Workshop 01:00 Car Theft Reports 01:28 Neighborhood Watch Meeting - Active Shooter Situations 02:00 Residential Sound Insulation Program Suspended 02:50 Richmond Street Rehab Project Update 03:29 El Segundo Fire and Police Pancake Breakfast
Topics: California, El Segundo, El Segundo TV, Government Access TV, Community Media, PEG, Youtube, active...
R&D Report 1966-16 : Acoustic tests at Broadcasting House, Glasgow. A.N. Burd Building modifications in the studio area comprising studios 4,5,6,7 and 8 on the third floor of Broadcasting House, Glasgow, are under consideration. The primary aim of the measurements described in this report was to determine the sound insulation of the roof of these areas, and to consider whether it can be increased sufficiently to exclude aircraft noise from the studios. Additional measurements relevant to...
Topics: studio, noise, insulation, aircraft, levels, roof, studios, sound, curve, measurements, measured...
R&D Report 1967-11 : Psychoacoustic criteria for background noise and sound insulation in broadcasting studios C.L.S. Gilford, D.K. Jones This report summarises the criteria at present used to guide the design of studios with respect to background noise and sound insulation. Many of these criteria have been difficult to determine by definitive experiments and have therefore been evolved by experience and indirect methods which are described in this report, together with specifications for...
Topics: noise, sound, studios, studio, ventilation, octave, insulation, levels, specifications, background,...
12 p; ill.; 27 cm; trade catalog;
Topics: Sound Insulation - - catalogs, Division 09, tile
R&D Report 1967-37 : The measurement of sound insulation in the presence of flanking paths A.N. Burd It is on occasions of advantage to determine the sound insulating properties of a partition material from a small sample or to measure the sound transmission through a new form of construction before the building of which it is part is complete. Under these conditions conventional sound insulation measurements are not possible and specialized techniques have been employed to obtain results....
Topics: measurements, sound, flanking, insulation, accelerometer, correlation, curve, paths, tion,...
R&D Report 1964-74 : Visit to Holland and Germany June 1964 R.S.C. Gundry, A. Brown, L.G. Rogers, C.L.S. Gilford A report on a visit to Holland and Germany to discuss recent trends in the broadcasting services and in studio design and equipment.
Topics: studios, studio, stereophonic, insulation, monophonic, acoustic, hanover, reverberation, holland,...
R&D Report 1978-03 : The masking effect of background noise. A.P.Robinson In some studios, artists have been disturbed by audible breakthrough from adjacent areas, even though the measured sound insulation met the appropriate criterion. This arose because the background noise was quieter than expected, and failed to mask the breakthrough. In the work done, a masking relation, applicable to a studio environment, has been determined by a series of subjective tests. Above the levels at which...
Topics: noise, breakthrough, sound, background, band, criterion, critical, masking, octave, bbc, third...
R&D Report 1966-11 : Acoustic tests in Dubbing Suite 1, East Block, Television Centre. D.K. Jones The installation of a new Dubbing Theatre and its associated Mixer and Recording Rooms has recently been completed in the East Block at Television Centre. Reverberation times and noise levels were measured in the three rooms and the sound insulation between the rooms taken in pairs was obtained. The results are given in Section 2, and their implications are discussed in Section 3.
Topics: reverberation, mixer, insulation, recording, noise, rooms, theatre, dubbing, sound, room,...
Architectural Standard - Ernst & Peter Neufert - Architects' Data
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Topics: room, floor, rooms, area, building, height, space, roof, construction, air, ground floor, floor...
16 p; ill.; 27 cm; trade catalog;
Topics: Sound Insulation - - catalogs, Division 09, tiles
R&D Report 1956-27 : Visit to U.S.A. and Canada - June 1956. T. Somerville The Second International Congress on Acoustics was attended at Cambridge, Massachusetts, and following this visits were paid to broadcasting organisations and laboratories engaged on acoustic research to USA. A visit was also paid to the Canadian Broadcasting Corporation.
Topics: reverberation, sound, acoustics, studios, loudspeakers, reflections, acoustic, noise, broadcasting,...
R&D Report 1966-50 : Acoustic tests in the sound recording studio, Riverside C.L.S. Gilford, D.K. Jones, T.J.B. Smith A new control cubicle was recently constructed for the Sound Recording Studio Riverside, and the studio itself was provided with additional curtains and a carpet. Reverberation times, sound insulations and noise levels were measured in these areas, and this report gives the results of the measurements and discusses their implications.
Topics: studio, cubicle, reverberation, acoustic, absorption, control, curves, sound, riverside,...
R&D Report 1954-38 : Sound insulation and acoustics in the Belfast studio centre W.K.E. Geddes, M.W. Greenway, A.L. Newman and F.L. Ward. During the years 1952/3, all the studios in Broadcasting House, Belfast, except Studios Nos. 1 and 4, were given permanent acoustic treatment. This report summarises the results of acoustic measurement in all the studios, describes certain modifications which were made during the building work, and discusses conclusions of a general nature which resulted...
Topics: studio, studios, reverberation, cubicle, frequency, continuity, acoustic, insulation, measurements,...
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Find out all the latest news and information happening in and around the city of El Segundo! 00:13 Top 15 Small Cities in California 00:54 LAX Residential Sound Insulation 01:55 Walter Krumbach 02:45 Car Temperature Safety
Topics: California, El Segundo, El Segundo TV, Government Access TV, Community Media, PEG, Youtube,...
R&D Report 1968-35 : Airborne sound insulation requirements in studio centres T.J.B. Smith, C.L.S. Gilford This report assembles data on the sound power levels of various sources of interference, including studios and other technical areas, and on the permissible levels of noise in all parts of a studio centre. From these data, curves showing the required attenuation between sound sources and all types of broadcasting area are derived. As the shapes of the curves thus obtained do not in...
Topics: sound, studio, curve, studios, partition, levels, noise, reduction, criterion, insulation, required...
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Architectural Standard - Ernst & Peter Neufert - Architects' Data
Topics: Topics room, floor, rooms, area, building, height, space, roof, construction, air, ground floor,...
R&D Report 1990-10 : A review of the airborne sound insulation requirements for broadcasting studios and ancillary areas. R. Walker Experience over the past nine years with the airborne sound insulation criteria has shown that they are stringent. In new developments their application is limited by financial constraints and additionally in refurbishment by structural constraints. Discussions during the past years have taken place on attempts and methods to reduce the requirements. This...
Topics: sound, insulation, criteria, studio, areas, levels, cubicle, criterion, chart, frequency,...
R&D Report 1993-05 : Metal-framed partitions with reduced thicknesses: Part 1 -- Narrower studs and cavities. G.D. Plumb The sound insulations were measured, in the Research Department Transmission Suite, of ten different metal-framed partitions. These partitions had narrower cavities and metal studs than those of the conventional thickness metal-framed Camden. Mineral wool had been installed in the cavities of some of the partitions and some partitions had double plasterboard skins rather...
Topics: sound, partitions, partition, studs, mineral, leaf, insulations, insulation, plasterboard, double,...
R&D Report 1984-03 : The acoustic design of Outside Broadcast vehicles E.W. Taylor A review is given of the acoustic design of outside broadcast vehicles in terms of the constraints implicit in the use of road vehicles. A new design of vehicle wall construction is described, the provision of sound absorbing material suitable for use in small enclosures is discussed, and particular factors involved in utilising large (articulated) vehicles are mentioned. As an illustration, an account is...
Topics: sound, vehicle, insulation, acoustic, digital, vehicles, broadcast, control, wall, design, control...
R&D Report 1992-04 : An investigation of the effects of boundary constraints on the sound insulations of lightweight, double leaf partitions. G.D. Plumb The sound insulation of a metal-framed, double leaf partition (measured in the Research Department Transmission Suite) was considerably lower when the two leaves of the partition were built into common, rather than independent, surrounding walls. The purpose of the work described in this Report was to investigate whether this shortfall in...
Topics: partition, surrounding, isolation, sound, built, perimeter, transmission, leaves, common,...
R&D Report 1995-06 : Lightweight partitions having improved low frequency sound insulations. G.D. Plumb The sound insulations were measured of a range of single, double and triple leaf partitions. For the single leaf partitions, a staggered stud configuration was used. For the double and triple leaf partitions, the configuration of the boards was different from that in the conventional Camdens. At low frequencies, the partitions tested generally had higher sound insulations than comparable...
Topics: partition, insulations, sound, leaf, wool, triple, camden, partitions, insulation, double,...
R&D Report 1978-25 : Probability levels of sound interference between programme areas. R. Walker Sound insulation must be provided between any two programme areas which are near to or adjacent to each other. For economic reasons, this insulation ideally must be no more than is necessary to reduce the interference from one area to the other to an acceptably low level. To determine the minimum necessary sound insulation requires a knowledge of the maximum sound pressure level on the source...
Topics: noise, interference, background, sound, perceptible, criterion, masking, insulation, levels, level,...
Topics: studio, audio, sound, digital, recording, control, professional, ampex, studios, fcrl, control...
R&D Report 1987-01 : A survey of achieved levels of airborne sound insulation in broadcasting studio centres. D.J. Meares A survey has been carried out on results from field measurements over the past fifteen years of the sound insulation of partitions in the technical areas of studio centres. The conduct of that survey is outlined and some examples of the acoustic performance of paritions are given.
Topics: sound, insulation, partition, bbc, average, acoustic, studio, partitions, triple, brick, triple...
R&D Report 1966-68 : Acoustic tests in Dubbing Suite No. 2 Television Centre East Block C.L.S. Gilford, D.K. Jones The second Dubbing Suite, which consists of a Dubbing Theatre and its recording and Mixer Rooms, has recently been completed in the East Block of Television Centre. Measurements of reverberation time, background noise level and sound insulation were made in this Suite of three rooms. Section 2 gives the results obtained and their implications are discussed in Section 3.
Topics: mixer, dubbing, reverberation, theatre, recording, noise, room, insulation, sound, acoustic,...
R&D Report 1966-49 : Acoustic tests in the new headquarters, Wales (Baynton House, Cardiff) D.K. Jones. This report gives the results of a series of preliminary acoustic tests in the sound studios, cubicles and recording rooms at the BBC's news Headquarters, Wales. None of the studios was complete; no fabric covers were fitted to the acoustic treatment nor were carpets laid. It is shown that changes in building methods may have serious acoustic consequences unless a close check is...
Topics: studio, reverberation, cubicle, insulation, decay, measurements, studios, noise, recording,...
R&D Report 1994-05 : Maximal-length sequence methods: Acoustic measurements in the presence of high levels of extraneous noise. R. Walker The use of the maximal-length sequence method to measure acoustic responses in the presence of high levels of extraneous noise is described. Direct and reliable measurements of time and frequency response functions down to a signal-noise ratio of 0 dB are possible. With modest amounts of signal-averaging, response functions down to S/N ratios of -20 dB...
Topics: measurement, frequency, measurements, impulse, signal, response, noise, sequence, averaging,...
R&D Report 1963-24 : Architectural acoustics and the arts. T. Somerville. An article published in the Institute of Physics and Physical Society Bulletin, May 1963, based on a lecture given on 10th December 1962 to their Manchester area branch.
Topics: reverberation, sound, acoustics, theatres, acoustic, absorption, loudspeakers, halls, frequency,...
R&D Report 1956-02 : Visit to Switzerland. T. Somerville This report describes a visit to Switzerland to attend a Conference of the International Organisation for Standardization , Technical Committee 43- Acoustics, held in Berne between 7th/9th September 1955. On the outward journey a visit was paid to the Ostend Kursaal which is a modern building containing a concert hall. Since no survey of the acoustic activities of the Swiss PTT has been carried out since June 1969 when Report A-027...
Topics: studios, absorbers, acoustic, insulation, institute, sound, damping, reverberation, battelle,...
R&D Report 1960-17 : Sound insulation and acoustics of the new studios in the Centre Block, Bush House. C.L.S. Gilford This report describes the design, with respect to acoustics and sound insulation, of the studios recently built in the Centre Block of Bush House. The principles of design are not new but in this application there was considerable compromise on grounds of cost and appearance. The first section, dealing with sound insulation, describes how the design was started from a new...
Topics: studios, studio, insulation, reverberation, absorption, transmission, cubicle, sound, cubicles,...
R&D Report 1991-09 : The airborne sound insulations of timber-framed partitions G.D. Plumb The sound insulation performances of several lightweight, timber- framed partitions were measured in Research Department's Transmission Suite. The purpose was to assess the merits of various sheet materials and the effects of changes in the construction details on the sound insulation performances of the partitions. The aim was to produce a design for a new type of partition which was cheaper than the...
Topics: partition, camden, plasterboard, fibreboard, isolation, leaf, sound, insulation, cavity, single,...
R&D Report 1994-14 : The sound insulations of studio doors: Part 1: Door Blanks G.D. Plumb, R. Clark The sound insulations of a range of different door blanks were measured. The results were compared with the sound insulations of existing BBC door blanks. The new doors were made from medium density fibreboard (MDF) which is more stable than the blockboard used in existing studio doors. Consequently, they should require less maintenance and adjustment and should have a longer lifespan. The...
Topics: mdf, door, insulations, bitumen, damping, measured, bbc, sound, acoustic, lightweight, band centre,...
R&D Report 1994-07 : Further measurements of the sound insulations of metal-framed partitions. G.D. Plumb The sound insulations were measured of a number of single and double leaf metal-framed partitions. The purpose of the work was to develop alternative designs for partitions to that of the Camden. The Camden contains fibreboard as one of its constituent elements. The new partitions used plasterboard as the sole board material. Therefore, the new partitions were heavier than the...
Topics: partition, partitions, insulations, plasterboard, wool, narrow, leaf, sound, camden, insulation,...
R&D Report 1994-08 : The sound insulations of metal-framed partitions having structural loadbearing properties. G.D. Plumb The sound insulations were measured of several single and double leaf partitions. The partitions had metal frames and were capable of supporting significant structural loads. The purpose of the work was to design structural partitions that were cheaper to build than the existing masonry walls used for the construction of large studios. For some of the double leaf tests,...
Topics: structural, partition, leaf, sound, blockwork, cavity, insulations, partitions, shaftwall,...
R&D Report 1966-29 : Consideration of aircraft noise and studio roof insulation A.N. Burd The increase of noise arising from the widespread use of jet aircraft has led to interference with programme in some broadcasting studios. The actual levels and spectra of noise from aircraft and the distribution of noise levels around a major airport are considered in order to reach a specification for the sound insulation of roofs to exclude such noise.
Topics: noise, levels, aircraft, roof, studio, octave, sound, insulation, spectra, pndb, pressure levels,...
R&D Report 1967-38 : Further acoustic tests in Broadcasting House, Llandaff A.N. Burd, D.K. Jones, T.J.B Smith This report summarizes the results of three acoustic surveys made at Broadcasting House, LLandaff, prior to being brought into service. In general the studios are satisfactory, but recommendations are made for modification to a few areas to reduce ventilation noise or speech colouration caused by the ceiling resonances, to which attention was drawn in a previous report.
Topics: studio, cubicle, reverberation, noise, curve, criterion, studios, insulation, sound, channel, sound...
R&D Report 1972-38 : Studio to cubicle insulation requirements with delayed monitoring T.W.J. Crompton This report describes experiments made to determine the minimum sound insulation required between a studio and its control cubicle when the sound in the cubicle has been delayed by a tape recorder having separate recording and playback heads. It is found that more insulation is required when a longer monitoring delay (corresponding to a slower tape speed) is introduced. At a tape speed of...
Topics: sound, simulation, insulation, delayed, tape, deviation, studio, cubicle, confirmatory, experiment,...
R&D Report 1986-08 : The measurement of large values of airborne sound insulation. R.Walker The requirements for and the measurement of airborne sound insulation between areas in a broadcasting centre are discussed. In particular, the high values of insulation required in some cases and the difficulties of measurement are described. One method which has been used for such measurements, using explosive charges, has been investigated in detail. Some of the results obtained in the past using...
Topics: sound, measurement, insulation, signal, level, noise, frequency, pressure, overload, acoustic, peak...
R&D Report 1983-01 : Some aspects of the transmission of sound through panels and of outside broadcast vehicle sound insulation. E.W.Taylor The derivation of the standard relationship between transmission loss and airborne sound insulation is discussed for the case in which the transmitting panel does not occupy the complete common wall between two rooms. The dependence of this relationship on the assumptions made in its derivation and on the nature of the sound fields on the two sides of...
Topics: sound, panel, transmission, source, room, reverberant, equation, insulation, wall, field, direct...
R&D Report 1966-04 : Acoustic tests on the Walker Memorial Hall, Birmingham. C.L.S. Gilford, T.J.B. Smith Acoustic tests carried out before and after modifications to the Walker Memorial Hall, Birmingham are described. Floor resonances which caused unacceptable musical quality satisfactorily removed.
Topics: reverberation, measurements, floor, studio, decay, accelerometer, cubicle, acoustic, resonances,...
BBC Monograph 73: Sonic Booms and Other Aircraft Noise in Studios. A.N. Burd, M.E.B. Moffat.
Topics: noise, sonic, aircraft, sound, bbc, studio, booms, levels, roof, insulation, pressure levels,...
R&D Report 1991-10 : The airborne sound insulations of metal-framed partitions G.D. Plumb The sound insulation performances of several lightweight, metal- framed partitions were measured in Research Department's Transmission Suite. The aim was to produce a design for a new type of partition which was cheaper than the Camden, which is currently used throughout the BBC, while maintaining a comparable sound insulation. As a result of the studies, a partition is recommended for use as an...
Topics: partition, sound, insulation, single, mineral, plasterboard, leaf, double, camden, partitions,...
16 p; ill.; 27 cm; trade catalog;
Topics: Sound Insulation - - catalogs, Division 09, plaster
R&D Report 1962-51 : Report on the International Congress on Acoustics Copenhagen 1962. H.D. Harwood, F.L. Ward This is a report about the International Congress on Acoustics held in Copenhagen, Denmark in August 1962, which was attended by members of the BBC Research Department.
Topics: sound, reverberation, acoustics, insulation, author, acoustic, noise, frequency, papers,...
R&D Report 1993-06 : Metal-framed partitions with reduced thicknesses: Part 2 -- Built-in acoustic treatment. G.D. Plumb Laboratory measurements were made of the sound insulations and absorption coefficients of a range of metal-framed partitions having built-in acoustic treatment. The optimum constructions for single and double leaf absorbent partitions had marginally lower sound insulations (approximately 1 dB) than those of comparable single and double metal-framed Camdens. The effective...
Topics: partitions, absorption, partition, sound, insulation, unperforated, perforated, leaf, acoustic,...
4 p; ill.; 27 cm; trade catalog;
Topics: Sound Insulation - - catalogs, Division 09, Spray on
4 p; ill.; 27 cm; trade catalog;
Topics: Sound Insulation - - catalogs, Division 09, plaster
Masonry Construction Manual
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Topics: masonry, thermal, wall, din, mortar, insulation, concrete, walls, units, building, thermal...
