Convention hall interior acoustics

CONVENTION HALL

INTERIOR ACOUSTICS

By:-SHOURYA PURI S.SAI GOUTHAM 5 SEM

BUILDING SERVICES

 AMITY SCHOOL OF ARCHITECTURE AND PLANNING

Convention hall• A large hall that is designed to hold

a convention, where individuals and groups gather to promote and share common interests.

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acoustics

• Usually very broadly defined as "the science of sound.

• Acoustics is the interdisciplinary science that deals with the study of all mechanical waves in gases, liquids, and solids including topics such as vibration , sound, ultrasound and infrasound.

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ACOUSTICS CRITERIA• Must have a low ambient noise level from internal and external sources• Provide a reasonable level of acoustic gain•Provide appropriate reverberation time•Hearing conditions in any auditorium are considerably affected by purely architectural considerations like:

- Shape - Layout of boundary surfaces

- Dimensions - Seating arrangements

- Volume - Audience capacity

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CONDITIONS FOR GOOD ACOUSTICS IN CONVENTION HALL

• AVOIDANCE OF STRONG ECHOES AND FOCUSING OF SOUND RAYS.

• INTIMACY, CLARITY

• REDUCTION OF SOUNDS AND VIBRATIONS

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AVOIDANCE OF STRONG ECHOES AND FOCUSING OF SOUND RAYS

• Strong echoes and focusing lead to a non uniform sound level within the room which is not desirable.

• These features of the auditorium design : scatters, convex (non-focusing) ,surfaces on balcony fronts, absorption materials, carpet .

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INTIMACY, CLARITY • Intimacy implies a short time between the

first reflection of sound to the ear and the direct sound from the source.

• Sound level of the source needs to be distinctly higher than the background sound. This promotes good speech intelligibility

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REDUCTION OF SOUNDS AND VIBRATIONS

• This keeps the background noise level down.

• Thick heavy walls and doors help to reduce the background noise.

• Seals on doors are important .

• It is also important to reduce noise from air handling systems, walking on floors and also talking outside the room.

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REVERBERATION• Reverberation is the collection of reflected

sounds from the surfaces in an enclosure like an auditorium.

• Reverberation is an important parameter that helps define the sound quality of an acoustic space.

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INTERIOR ACOUSTIC

• SOUND ABSORBERS

• SOUND DIFFUSERS

• FOAM PANEL

• ACOUSTICAL WALL

• SOUND REFLECTORS

• BAFFEL

• BANNER

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SOUND NATURE

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SOUND ABSORBERS• Sound absorbing acoustical panels and

soundproofing materials are used to eliminate sound reflections to improve speech intelligibility, reduce standing waves and prevent comb filtering.

• A wide variety of materials can be applied to walls and ceilings depending on your application and environment.

• These materials vary in thickness and in shape to achieve different absorption ratings depending on the specific sound requirements

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Acoustic Foam Sound Absorb

Sponge environment production sound absorber

SOUND DIFFUSERS• These devices reduce the intensity of

sound by scattering it over an expanded area, rather than eliminating the sound reflections as an absorber would.

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Sound Reflector Diffuser Ovation Reflector Panels

FOAM PANEL•  Acoustical foam panels are used as a

sound absorber to reduce reverberation and echoes. 

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 wooden acoustic panel

WALL PANEL

• Acoustical Wall Panels are the solution for areas that require noise reduction with a high quality fabric finish.

•  standard or custom sizes up to 4' x 10'

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BAFFEL• Baffle is a device which used in halls to

reduces the strength (level) of airborne sound

• Sound baffles are a fundamental tool of noise mitigation, the practice of minimizing reverberation.

• Sound baffles are also applied to walls and ceilings in building interiors to absorb sound energy and thus lessen reverberation.

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BANNER

• Acoustic Banners are large, visually and architecturally pleasing sound absorbers.

• They can be hung in a loose flowing fashion or installed flush to the roof deck for a flat appearance. 

• Installation of these materials reduce reverberation

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ACOUSTIC WALL• Acoustical wall fabric is a dimensional fabric that

offers excellent acoustical properties, unmatched fade resistance, and a fire/smoke retardant.

•  Sound channels is resistant to moisture, mildew, rot, bacteria, and is non-allergenic.  

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Features:•Lightweight Acoustic Fabric•Easy to install•Class A•Passes Corner Burn Test•Available in Many Colors•Durable / Abuse Resistant•Improves Speech Intelligibility

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Reflective near speaker, absorption in rear

THANK YOU

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