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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 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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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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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