Building acoustics controls sound transmission between spaces — for apartments and residential towers, hotels, offices, hospitals, schools, mixed-use developments, and data centres that demand privacy, comfort, and environmental noise control. As an acoustic consultant based in Jakarta, ALTA Integra works across airborne sound insulation, structure-borne noise, floor impact-noise mitigation, wall and façade performance, acoustic zoning, vibration isolation, and building-envelope optimisation.
Our process starts with target-setting for sound-transmission class (STC) and impact-insulation class (IIC) appropriate to each adjacency — a bedroom wall shares almost nothing acoustically with a plant-room wall, and treating them identically wastes budget in one place while under-protecting the other. We model wall and floor assemblies in INSUL and SonArchitect before construction, testing material and detailing options against the project's actual targets rather than a generic assembly library.
Because sound insulation is decided by construction detailing as much as by the assembly drawing, we stay involved through construction to catch the flanking paths and compromised details that erode performance on site, and verify installed performance with field testing to ISO 16283 and ASTM E336/E1007 — confirming what's built actually delivers the privacy and comfort the design promised.
Architectural acoustics shapes how sound behaves inside a room — for auditoriums, theatres, worship facilities, lecture halls, studios, corporate and hospitality spaces, and immersive media environments. As an architectural acoustics consultant based in Jakarta, ALTA Integra optimises room geometry and proportion, sets reverberation-time targets from both acoustic and psychoacoustic perspectives, defines background-noise criteria, and develops absorption, diffusion, and material strategies integrated with the architecture.
Every room type has a different acoustic signature it needs to hit — a worship space wants warmth and envelopment for music alongside intelligibility for speech, while a lecture hall needs speech clarity above almost everything else. We predict these outcomes before construction using CATT-Acoustic and EASE (AURA and EARS auralization), letting stakeholders hear a design's acoustic character rather than trust a set of numbers on a page.
Absorption, diffusion, and reflective surfaces are specified as architectural materials, not afterthought treatments bolted onto a finished room, so the acoustic strategy reads as part of the design intent. We verify reverberation time, speech intelligibility (STI), and background noise (NC/RC) on site against ISO 3382 — confirming the room performs as auralized, not just as calculated.
Mechanical systems are among the largest sources of indoor noise. As a building-acoustics consultant based in Jakarta, ALTA Integra provides HVAC noise control, chiller and cooling-tower mitigation, generator and pump vibration isolation, duct breakout reduction, AHU/FCU treatment, equipment enclosures, floating floors, and resilient mounting — coordinated with MEP engineers without compromising performance or energy efficiency.
Noise from mechanical systems reaches occupants through several paths at once — airborne breakout through duct walls, structure-borne vibration through mounts and slabs, and direct radiation from equipment rooms — and controlling only one path while ignoring the others leaves the complaint unresolved. We model these paths together, selecting silencers, isolation mounts, and enclosure strategies sized to the specific equipment and adjacent space, not a generic noise-control catalogue.
Because MEP noise control interacts directly with equipment performance and energy efficiency, we work alongside mechanical engineers from schematic design rather than reviewing their drawings after the fact, and we verify installed noise levels against NC/RC targets and IEC 60268-16 framework on site — confirming the mechanical systems that keep a building comfortable don't become the thing occupants notice most.
Environmental noise control evaluates how external sources affect buildings, communities, and urban environments — through noise surveys, mapping and simulation, traffic, rail and transportation analysis, industrial noise assessment, construction-noise management, façade design, and barrier engineering.
A site's noise context has to be measured before it can be designed around. As an environmental noise consultant based in Jakarta, ALTA Integra runs baseline noise surveys and long-term monitoring to characterise traffic, rail, industrial, and neighbourhood noise across day and night periods, then simulates propagation in CadnaA and CadnaB to predict how that noise reaches every façade of a proposed building, not just the side facing the loudest source.
Where survey results show a site exceeds comfortable levels, we design the response at the right layer — façade sound-insulation upgrades, site barriers and landscaping, or construction-phase noise-management plans for nearby communities during a project's build — following ISO 9613 propagation framework and Indonesian SNI environmental-noise limits, and verify outcomes with post-completion monitoring where a project's context calls for it.
Soundscape design goes beyond noise reduction to shape meaningful auditory experiences that support wellbeing, emotional comfort, spatial identity, and environmental quality. Rather than pursuing silence, it considers how people psychologically and emotionally perceive sound across architecture, urban realms, hospitality, workplaces, cultural and spiritual settings.
As a soundscape design consultant based in Jakarta, ALTA Integra integrates psychoacoustic analysis, auditory-comfort strategy, sound-identity development, biophilic sound integration, wellness-oriented environments, urban soundscape planning, and experiential acoustic branding.
A successful environment is not necessarily silent — it is acoustically balanced, psychologically comfortable, emotionally engaging, and meaningfully connected to its context and function.