Ambient Noise Testing & Monitoring India | NABL Accredited

Auriga Research provides NABL-accredited ambient noise testing and monitoring services across India. Our field teams deploy calibrated Type 1 sound level meters to measure environmental noise levels at industrial facilities, construction sites, residential boundaries, and sensitive zones per CPCB guidelines and the Noise Pollution (Regulation and Control) Rules, 2000.

We measure Leq (equivalent continuous sound level), Lmax, Lmin, and statistical percentile levels (L10, L50, L90) across day and night periods. Reports are structured for direct submission to State Pollution Control Boards, EIA consultants, and regulatory authorities.

Noise Monitoring Parameters

Leq (equivalent continuous sound pressure level) — day and night
Lmax and Lmin — peak and minimum noise levels
L10, L50, L90 — statistical percentile noise descriptors
Frequency analysis — octave and 1/3 octave band spectra
Ambient noise mapping for EIA baseline studies
Construction noise impact assessment
Industrial boundary noise compliance monitoring

Who Needs Noise Monitoring

Industrial units requiring SPCB noise compliance certification
EIA consultants conducting baseline environmental studies
Construction projects near residential and sensitive zones
Airports, highways, and infrastructure developers
Municipal authorities enforcing noise pollution norms

Turnaround Time

Single-location noise assessments are completed in 5-7 business days including field monitoring and reporting. Multi-location EIA baseline studies take 10-15 business days after field data collection.

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Frequently Asked Questions

What standards does Auriga Research follow for ambient noise monitoring?

We follow CPCB (Central Pollution Control Board) guidelines and IS 10399 for ambient noise measurement. Monitoring is performed using Type 1 integrating sound level meters calibrated to IEC 61672 standards. Measurements cover Leq, Lmax, Lmin, L10, L50, and L90 percentile noise levels across day and night periods as prescribed by the Noise Pollution (Regulation and Control) Rules, 2000.

What types of projects require ambient noise monitoring in India?

Environmental Impact Assessments (EIA) for industrial projects, mining operations, infrastructure development, and construction activities require baseline and post-project noise monitoring. Factories operating near residential zones need periodic noise compliance monitoring under Environment Protection Act provisions. Airports, highways, and railway projects also mandate noise assessment studies.

How long does a typical noise monitoring study take?

A single-location ambient noise assessment takes 1-2 days of field monitoring followed by 5-7 business days for report generation. EIA baseline noise studies covering multiple locations over seasonal variations require 3-7 days of field work per season, with comprehensive reports delivered within 10-15 business days after data collection.