Complete Guide to Noise Management Plans: Regulations, Measurements, and Community Relations

Discover how to develop and implement effective noise management plans with our expert guide. We cover regulations, measurement techniques, and community communication strategies.

This guide to noise management plans is designed for developers, builders, facility managers, and public administrations seeking to mitigate the noise impact of their operations. The article details a comprehensive approach, from interpreting municipal ordinances and state regulations to conducting accurate noise measurements with calibrated sound level meters. The benefits of proactive management are explored, including reduced penalties, improved community relations (measured by the Net Promoter Score – NPS), and increased project value.

We provide key metrics such as sound pressure level (dB) reductions, regulatory compliance exceeding 98%, and a decrease in complaints of over 80%, offering a clear value proposition for achieving sustainable and socially responsible development.

Introduction

Noise pollution is one of the most underestimated environmental challenges in urban and industrial settings. It affects the health, well-being, and productivity of millions of people. Poor noise management not only leads to financial penalties and project delays but also generates social conflict and damages corporate reputation. This guide to noise management plans stems from the need for a structured and professional approach to addressing this problem. We provide a clear roadmap that integrates three fundamental pillars: rigorous compliance with current regulations (municipal ordinances, regional decrees, and national laws), the application of reliable acoustic measurement techniques, and the building of positive and transparent relationships with affected communities. The goal is to transform noise management from a reactive obligation into a competitive advantage and a pillar of corporate social responsibility. Our methodology is based on a continuous improvement cycle: Diagnosis, Planning, Implementation, and Monitoring (DPIM). Each phase is supported by key performance indicators (KPIs) to ensure the plan’s effectiveness and efficiency. We will measure success not only in terms of reduced decibels (dB), but also in the percentage decrease in neighborhood complaints, adherence to project deadlines without noise-related interruptions (deviation < 5%), and the return on investment (ROI) derived from avoiding fines and improving productivity. This quantitative approach allows us to justify investments in noise mitigation and demonstrate the added value to all stakeholders.

Acoustic measurement of ambient noise is the first step in developing an effective, data-driven noise management plan.

Vision, values, and proposal

Focus on results and measurement

Our vision is to create acoustically sustainable environments where economic development and quality of life coexist in harmony. We are guided by the values of technical rigor, transparency, and social empathy. We apply the Pareto principle (80/20) to identify and prioritize the most significant noise sources and the most impactful mitigation measures, thereby optimizing our clients’ resources. Our technical standards are based on ISO 1996 (Acoustics — Description, measurement and evaluation of environmental noise) and relevant European directives, as well as the specific local ordinances of each municipality. The value proposition focuses on offering comprehensive solutions that not only guarantee legal compliance but also build community trust and protect the long-term value of assets.

Added Value: We transform noise management from an operational cost into a strategic investment that enhances reputation and reduces legal and operational risks.
Quality Criteria: We exclusively use Class 1 sound level meters calibrated annually, predictive acoustic modeling software (such as Predictor-LimA or SoundPLAN), and follow standardized measurement protocols to ensure maximum data reliability.
Decision Matrix for Solutions: We evaluate mitigation measures according to a scoring system that considers acoustic effectiveness (dB reduction), implementation cost (€/m²), durability, aesthetic impact, and community acceptance.

Services, Profiles, and Performance

Portfolio and Professional Profiles

We offer a portfolio of services designed to cover the complete lifecycle of a project, from the design phase to operation and decommissioning. These services are delivered by a multidisciplinary team that includes acoustic engineers, legal advisors specializing in environmental law, and community conflict mediators. Our Noise Management Plan Guide is the central framework around which these services are structured:

Initial Acoustic Audits (Baseline): Mapping existing noise levels before the start of a project to establish a target reference point.
Predictive Acoustic Modeling: Simulation of the acoustic impact of new constructions, infrastructure, or industrial activities to design mitigation measures from the planning phase.
Design and Implementation of Noise Management Plans: Preparation of detailed technical documents that include identification of sources, sensitive receptors, immission targets, control measures, and monitoring protocols.
Continuous and Real-Time Monitoring: Installation of permanent or semi-permanent noise monitoring terminals with automatic alerts in case of exceedance of limits.
Community Mediation and Communication: Design and implementation of communication plans to inform residents, establish channels for dialogue, and manage complaints constructively.
Legal Advice and Representation: Support in obtaining licenses, responding to administrative requests, and defense in sanctioning procedures.

Operational Process

Phase 1: Diagnosis and Analysis (1-2 weeks): Gathering project documentation, analyzing applicable regulations, and conducting the baseline measurement campaign. KPI: Measurement accuracy ±1.5 dBA.
Phase 2: Plan Design (2-3 weeks): Predictive modeling, selecting mitigation measures, and drafting the Noise Management Plan. KPI: Cost of proposed measures ≤ 1.5% of the total project budget.Phase 3: Consultation and Approval (1-4 weeks): Presentation of the plan to the client and, if applicable, to the authorities and the community to receive feedback. KPI: Zero major non-conformities in the review by the administration. Phase 4: Implementation and Training (Ongoing): Implementation of control measures (barriers, schedules, machinery selection) and training of the personnel involved. KPI: 100% of relevant operational personnel trained. Phase 5: Monitoring and Reporting (Ongoing): Monitoring of noise levels, management of alerts, and preparation of periodic reports. KPI: Noise limit compliance rate ≥ 98%. Phase 6: Closure and Evaluation (1 week post-project): Preparation of the final report, community NPS assessment, and analysis of lessons learned. KPI: Reduction of registered complaints ≥ 80% compared to similar projects without a plan.

Tables and examples

Improve relations with the neighboring community.Number of formal complaints received per week. Neighborhood Net Promoter Score (NPS).Creation of a direct communication channel (phone/email), monthly information meetings, publication of weekly noise reports.Reduction of complaints from an average of 5/week to <1/week. NPS > 20.Optimize the cost of noise mitigation.Total cost of control measures (€).Calculated ROI (fines avoided / mitigation cost).Perform cost-benefit analyses of different types of barriers and silencers. Prioritize source control.Mitigation cost below €50,000, avoiding potential fines of up to €300,000. ROI > 500%.

Objective	Indicators	Actions	Expected result
Compliance with the Municipal Noise Ordinance in a construction project (daytime limit: 65 dBA)	Equivalent continuous sound pressure level (Leq) on the facade of the nearest neighbor.	Installation of 4-meter acoustic barriers, use of low-noise machinery, limitation of noisy activities to specific time periods.	Leq measured on facade < 65 dBA during 98% of working hours.

Our operational process guarantees systematic and auditable management, minimizing the impact on costs, time, and quality of the main project.

Representation, Campaigns, and/or Production

Professional Development and Management

The execution of a noise management plan is a project in itself that requires precise logistics, obtaining specific permits, and impeccable coordination among multiple suppliers and stakeholders. We act as the developer’s representatives before public administrations and the community. We manage the logistics of installing measuring equipment and acoustic barriers, ensuring compliance with health and safety regulations. We handle the processing of the necessary licenses for the installation of these elements on public roads or on third-party properties. The implementation schedule for the mitigation measures is seamlessly integrated into the overall project timeline to avoid delays and cost overruns, with clear control milestones and defined deliverables. Documentation Checklist: Technical Report of the Noise Management Plan. Predictive Acoustic Study. Calibration Certificates for the Sound Level Meters. Technical Data Sheets for the Mitigation Solutions (barriers, silencers). Communication Plan and Record of Interactions with the Community. Application for Municipal Permits for Public Space Occupation. Contingency Plan: Availability of low-noise replacement machinery in case of breakdown. …

Protocol for immediate action in case of exceeding limits (stoppage of activity, investigation of the cause, notification to the authority).
Alternative communication channels in case of failure of the main system.
Stock of additional acoustic barrier panels for urgent repairs or expansions.

Detailed planning and integration of the noise management plan into the overall project schedule minimize the risks of delays and conflicts.

Content and/or Media that Convert

Messages, Formats, and Conversions: Effective Acoustic Communication

Communication is a critical component of any noise management plan. Simply complying with the law is not enough; it is essential that the community feels their concerns are being heard and addressed. We develop clear, accessible, and transparent content for different audiences. We use informative “hooks” such as “Did you know that the noise level of a normal conversation is 60 dB?” to provide context for technical data. Calls to action (CTAs) encourage participation, such as “Subscribe to our weekly newsletter” or “Contact our community manager through this channel.” We conducted A/B tests with different communication formats (infographics vs. plain text, in-person meetings vs. webinars) to measure which approach builds more trust and most effectively reduces complaints. Conversion metrics are not sales figures, but rather engagement indicators: email open rates, meeting attendance, and, above all, the correlation between communication campaigns and the reduction of complaints. Phase 1: Content Strategy (Responsible: Communications Director). Stakeholder identification (residents, city council, local press). Definition of key messages for each audience. Selection of channels (project website, direct mail, meetings). Establishment of KPIs (complaint rate, social media sentiment). Phase 2: Production (Responsible: Content Team). Design of infographics explaining noise levels and measures. Writing of FAQs and press releases. Creation of complaint response templates. Recording short videos explaining how the silent machinery works. Phase 3: Distribution and Promotion (Responsible: Community Manager). Implementation of the communications calendar. Organization of open house events or information points. Coordination with residents’ associations. Phase 4: Measurement and Optimization (Responsible: Data Analyst). Monitoring of communication KPIs. Analysis of the effectiveness of the channels. Adjustment of the strategy based on the feedback received.

Visual and easy-to-understand content is key to communicating complex technical concepts and achieving the project’s social acceptance goals.

Training and employability

Demand-oriented catalog

The correct implementation of a noise management plan depends critically on the training of personnel on the construction site or at the facility. We offer specific training modules, designed to be practical and directly applicable to the workplace, improving the employability and technical competence of teams.

- Module 1: Fundamentals of Acoustics and Regulations for Site Managers (8 hours).
  - Basic concepts: dBA, Leq, Lmax.
  - Interpretation of municipal and state regulations.
  - Legal responsibilities and sanctions regime.
  - Reading and interpreting a noise management plan.
- Module 2: Best Practices for Noise Reduction at the Source for Machinery Operators (4 hours).
  - - Low-noise operating techniques.
    - Preventive maintenance of equipment to avoid noise anomalous.
  Proper use of screens and movable enclosures.

Protocol for action in case of immediate complaint. Module 3: Communication and Complaint Management for Community Managers (6 hours). Active listening and empathetic communication techniques. Protocol for registering and tracking complaints. Mediation and conflict resolution strategies. How to communicate technical data simply.

Methodology

Our training methodology is eminently practical (“learning by doing”). Assessments are carried out using rubrics that evaluate the student’s ability to solve real-world practical cases. This includes noise measurement simulations, complaint management role-playing, and machinery selection workshops. We collaborate with companies in the sector to offer a job bank for professionals who demonstrate a high level of competence, connecting training with real employment opportunities. The expected result is a measurable reduction in noise incidents attributable to human error or lack of knowledge, quantified as a 30% decrease in occasional noise limit exceedances.

Operational Processes and Quality Standards

From Request to Execution

Our operational process is standardized to guarantee maximum quality and efficiency in every project, regardless of its scale.

Diagnosis (Phase 1): Following the client’s request, an acoustic engineer conducts an initial site visit and a document audit. The deliverable is a Preliminary Diagnostic Report that identifies risks and opportunities. Acceptance criterion: The report must identify at least 80% of the potential noise sources and the applicable regulations.Proposal (Phase 2): A detailed technical and economic proposal is prepared, including the scope, methodology, schedule, and KPIs. The deliverable is the Noise Management Plan Proposal. Acceptance criterion: The proposal must be approved in writing by the client. Pre-production (Phase 3): Once approved, the team is assigned, baseline measurements are taken, and the detailed plan is drafted. The deliverable is the Noise Management Plan v1.0 and the Acoustic Baseline Report. Acceptance Criteria: The plan must comply with all local regulations.
Implementation (Phase 4): Mitigation measures are implemented and continuous monitoring begins. Deliverables are the Periodic Monitoring Reports (weekly/monthly). Acceptance Criteria: 98% of the monitoring data must be below the established limits.
Closure (Phase 5): At the end of the project, a final measurement campaign is carried out and the closure report is prepared. Deliverables are the Final Acoustic Report and the Lessons Learned Summary. Acceptance Criteria: The report must demonstrate compliance with the objectives and be validated by the client.

Quality Control

Quality control is integrated throughout the entire process. Clear roles are assigned (Project Manager, Field Engineer, Quality Manager) and an escalation system is established for incident resolution. Service Level Agreements (SLAs) guarantee fast response times to any deviations. Roles: The Project Manager is the single point of contact for the client. The Field Engineer is responsible for data collection. The Quality Manager reviews all deliverables before submission. Escalation: Incidents are classified by severity (low, medium, high). High-severity incidents (e.g., persistent exceedance of limits) are escalated to the Project Manager and the client within 2 hours. Acceptance Indicators: Each deliverable has a quality checklist that must be completed. For example, a measurement report must include the equipment calibration certificate.

SLAs: Customer inquiry response time: < 24 hours. Report generation time after a limit exceedance: < 4 hours. Online monitoring system availability: > 99.5%.

Compliance with barrier installation deadlines.Risk: Delays in the delivery of mitigation materials. Mitigation: Agreements with multiple suppliers and maintenance of a small emergency stock.Monitoring: Tracking reports. Real-time alerts.Percentage of compliance with noise limits. Average incident resolution time.Risk: Failure of monitoring equipment (vandalism, power outage). Mitigation: Equipment with backup power and secure anchoring systems. Backup manual measurement protocol.

Phase	Deliverables	Control Indicators	Risks and Mitigation
Diagnosis	Preliminary Diagnostic Report	Correct identification of all applicable regulations. Accuracy of initial noise estimates.	Risk: Omitting a specific local ordinance. Mitigation: Updated regulatory database and double review by a legal advisor.
Design and Planning	Noise Management Plan	Schedule realism. Theoretical effectiveness (modeling) of proposed measures > 10 dB attenuation.	Risk: Proposed measures are too expensive or constructively unfeasible. Mitigation: Co-creation workshop with the client’s construction team to validate solutions.
Implementation	Installation reports. Staff training records.	Percentage of staff trained.

Application Cases and Scenarios

Case 1: Construction of a Residential Building in an Urban Center

Scope: Construction project of 80 homes over 24 months in a high-density population area, with a hospital 150 meters away. KPIs: Maintain the Leq below 60 dBA during daytime hours on the hospital facade, reduce neighborhood complaints by 90% compared to the demolition phase (carried out without a plan), and avoid any work stoppages by municipal order. Development: A baseline study was conducted that revealed background levels of 55 dBA. A plan was implemented that included 6-meter-high perimeter noise barriers, scheduling the noisiest tasks (piling, hydraulic hammers) during the middle of the day, and using encapsulated machinery. A real-time monitoring system was installed on the hospital façade and in two residential buildings. A direct telephone line and email address were established for residents, managed by a community representative. Results: The Leq at the hospital remained at an average of 58.5 dBA. Complaints decreased from 12 per week to an average of 1 per month. The project was completed on schedule without any interruptions due to noise issues. The cost of the plan (1.2% of the total budget) was recouped by avoiding a single week of downtime, the estimated cost of which was higher.

Case 2: Acoustic Adaptation of a Nightlife Venue

Scope: A bar with live music on the ground floor of a residential building with recurring noise complaints at night. KPIs: Comply with the 25 dBA bedroom noise limit according to local regulations, obtain a positive NPS from the building’s residents, and secure renewal of the business license. Development: An initial acoustic audit measured levels of up to 45 dBA in the upstairs bedrooms. The plan focused on sound insulation. A “box-in-box” solution was designed with multi-layered plasterboard walls and acoustic membranes, a suspended ceiling with silent blocks, and a double door with an acoustic vestibule. An acoustic limiter-recorder was installed to monitor the sound system, ensuring that levels never exceeded 25 dBA in the homes. Meetings were held with the homeowners’ association to present the project and the expected results. Results: Post-intervention measurements certified levels below 22 dBA in the bedrooms. The business obtained its final license. The neighbors’ Noise Protection Score (NPS) improved from -80 to +40 in six months. The ROI of the investment in soundproofing (€45,000) was achieved in 18 months by preventing the business from closing and incurring recurring fines.

Case 3: Noise Management in a Wind Farm

Scope: Commissioning of a wind farm with 15 wind turbines located 800 meters from a rural village. The challenge was to manage both the aerodynamic noise of the blades and the tonal noise of the nacelle. KPIs: Comply with the 45 dBA nighttime noise limit for the nearest homes, achieve 95% accuracy in the predictive model, and automate the control system. Development: A highly detailed acoustic propagation model was created that considered the topography, weather conditions (wind and temperature), and the sound spectrum of the wind turbines. The management plan included a Noise-Reduced Operation Mode that was automatically activated on the wind turbines closest to the homes at night or under certain wind conditions. A continuous monitoring system was installed that measured the noise and, at the same time, distinguished the sound of the wind farm from background noise (traffic, wildlife). Results: The Automatic Control System Maintained Noise Levels Below 45 dBA 99.8% of the time. The predictive model had an average deviation of only 1.8 db from the current measurements. The project received final environmental approval without litigation from the local community.

Step-by-step guides and templates

Guide 1: How to make an ambient noise measurement for baseline

Step 1: Planning. Define the objectives (eg characterize background noise, identify existing sources). Select the representative measurement points (e.g. the most exposed facade of the property, limit of the property, point in a quiet zone). Define the calendar (eg 24 continuous hours, day/evening/night periods).
Step 2: Preparation of the equipment. Use a Class 1 integrator sound meter. Check the date of the last official calibration (annual). Perform a field calibration with an acoustic calibrator before and after the measurement campaign. The deviation should not exceed 0.5 dB.
Step 3: Installation at the measurement point. Place the microphone on a tripod at a height of 1.5 meters above the ground and more than 3.5 meters from any reflective surface (walls). Use a windscreen. Ensures the team against vandalism or inclemency.
Step 4: Setting the sound level meter. Select the frequency weighting ‘A’ (dBA) and the ‘FAST’ time weight. Schedule data acquisition to record LEQ every second (or short period) and save global statistics (Leq, L10, L90, Lmax) every 15 minutes or 1 hour.
Step 5: Data collection and annotations. start the measurement. Write down in a field notebook the start time, weather conditions (wind, rain), and any relevant sound event (step of a plane, mermaid, barks). This is crucial to debugging the data later.
Step 6: Data processing. Download the sound meter data. Excludes periods affected by anomalous events or adverse weather conditions. Calculate the global indicators for the day, evening and night periods according to regulations.
Step 7: Preparation of the report. Documents the methodology, the equipment used (with calibration certificate), the plans with the location of the points, the results tables and the time evolution graphs.
- Checklist final: Are all calibration certificates attached? Has the methodology been clearly described? Are the measurement points geolocated? Have excluded data been analyzed and justified? Do the conclusions respond to the initial objectives?

Guide 2: Content template for a construction noise management plan

Section 1: Introduction and objectives. Description of the project, location, planned work schedule. Objectives of the plan (regulatory compliance, minimization of discomfort).
SECTION 2: REGULATORY FRAMEWORK. List of all municipal ordinances, regional decrees and applicable state laws, with specific noise limits for the area and schedule.
Section 3: Identification of sensitive receptors. Mapping of homes, hospitals, schools, nursing homes, etc., in the area of influence.
Section 4: Acoustic characterization.
- Inventory of noise sources: List of all the machinery and activities to be carried out, with their sound power levels (LW).
- Baseline study results: Background noise levels before starting the work.
- Predictive study: Results of the modeling of the acoustic impact of the work on sensitive receptors.
Section 5: Mitigation and control measures. Detailed description of the measures to be implemented:
- Measurements at the source (selection of silent machinery, maintenance).
- Measurements on the path (fixed or mobile acoustic barriers, enclosures).
- Organizational measures (schedule planning, location of stockpiles).
Section 6: Monitoring and monitoring plan. Location of monitoring points, frequency of measurements, equipment to be used, alert thresholds and action.
Section 7: Communication and Complaint Management Plan. Communication channels, contact person, registration protocol and response to complaints.
Section 8: Responsibilities and Training. Organizational chart with the responsibilities of each figure (Chief of the Works, Head of Environment) and Training Plan for the staff.

Guide 3: Noise Conflict Mediation Protocol

Step 1: Reception and registration of the complaint. Set a single point of contact. Record the date, time, name of the claimant, nature of the complaint and any specific details. acknowledge receipt in less than 24 hours.
Step 2: Immediate internal investigation. Verify what activity was being carried out at the time of the complaint. Check the noise monitoring system data, if it exists. Talk to the staff involved.
Step 3: Personalized contact with the claimant. Call by phone or arrange a meeting. Actively listen to your perspective without interrupting (empathic listening). Validate your annoyance (“I understand that the noise has been very annoying to you”).
Step 4: Explanation and proposal of solution. Explain the cause of the noise clearly and without technicalities. Report the measures that are already being taken. Propose specific corrective actions and with a specific term (eg “Tomorrow we will install an additional screen next to that machine and we will call you to confirm if you notice an improvement”).
Paso 5: Seguimiento. fulfill what was promised. Make a follow-up call to check if the solution has been effective. Keep the claimant informed of progress.
Step 6: Closing and documentation. Once the issue is resolved, document the entire process in the complaint record. Analyze recurring complaints to identify patterns and proactively improve the noise management plan.

Internal and external resources (no links)

Recursos internos

Editable Noise Management Plan template (.docx format).
Initial acoustic audit checklist.
Catalog of acoustic mitigation solutions with cost-benefit analysis.
Internal database of noise regulations by municipality.
Manual of good practices for operators.

Reference external resources

ISO 1996 Standard: Acoustics — Description, measurement and evaluation of environmental noise.
Directive 2002/49/EC of the European Parliament and of the Council on Environmental Noise Assessment and Management.
Law 37/2003, Noise, and its Royal Development Decrees (Spain).
Guides to the World Health Organization (WHO) on environmental noise.
Basic Noise Protection Documents (DB-HR) of the Technical Building Code (CTE).

Preguntas frecuentes

What is a noise management plan and why is it necessary?

A noise management plan is a technical document that identifies the noise sources of a project or activity, evaluates its impact on the environment and establishes the specific measures to control said noise and ensure compliance with regulations. It is necessary to obtain licenses, avoid sanctions, prevent conflicts with the community and demonstrate a commitment to environmental and social sustainability.

What is the difference between dba, leq and lmax?

They are different descriptors of noise. DBA (A-weighted decibel) is a measure that adjusts the sound to the sensitivity of the human ear. The LEQ (equivalent continuous level) is the constant noise level that would contain the same acoustic energy as the actual fluctuating noise over a period of time; It is a measure of average noise. The Lmax is the maximum noise level reached during a sound event.

How much does it cost to implement a noise management plan?

The cost varies greatly depending on the scale of the project and the sensitivity of the environment. It can range from 0.5% to 3% of the total project budget. However, it should be considered an investment, since the cost of not having it (fines, stoppages of work, litigation) is usually much higher. Proactive and well-planned management from the start is always more economical than reactive solutions.

Can you predict the noise that a new factory or road will make before building it?

Yes. Through acoustic modeling software, we can create a 3D model of the project and its environment, enter the data from the noise sources (sound power of the machinery, intensity and speed of the traffic) and the propagation conditions (ground, buildings, wind). The software calculates the expected noise levels at any point, such as the facades of nearby houses, with high precision, allowing corrective measures to be designed before building.

Are acoustic barriers always the best solution?

Not necessarily. Barriers are effective in blocking the direct path of sound, but its effectiveness depends on its height, length and location. Often, the most efficient and economical strategy is to act directly on the noise source: select quieter machinery, perform good maintenance, or encapsulate the loudest equipment. A good noise management plan combines different types of solutions in a comprehensive strategy.

Conclusion and call to action

Noise management has ceased to be a late occurrence to become a central element of the planning of successful and socially responsible projects. As we have detailed in this Noise Management Plan Guide, a systematic approach that integrates regulatory compliance, rigorous measurement and transparent communication not only mitigates risks, but also creates value. The implementation of these strategies translates into tangible KPIs: projects that end on time, budgets that are met by avoiding costly sanctions, and a corporate reputation strengthened by a relationship of trust with the community. The next step is to move from theory to action. Do not wait for the first complaint or the first requirement of the Administration to arise. Perform a proactive acoustic audit of your operations or your next project. Use this guide as your roadmap to develop a robust plan that protects your investment and the well-being of your environment.

Glosario

DBA (A-weighted decibel): Unit of measurement of the sound pressure level that has been filtered to simulate the response of the human ear, which is less sensitive to very high and very low frequencies.
Noise immission: The level of noise that reaches a specific receiver (such as the façade of a house) from one or several stations.
LEQ (equivalent continuous sound pressure level): The level of a stable sound that, in a given period of time, has the same acoustic energy as the actual fluctuating sound. It is a measure of the “energy average” of noise.
LW (sound power level): A measure of the total amount of sound energy radiated by a source, regardless of distance or environment. It is an intrinsic characteristic of a machine.
Sonómetro: Measuring instrument designed to measure sound pressure levels. Class 1 ones are the most accurate and are used for legal measurements and certifications.
STC (Sound Transmission Class): Classification of the capacity of a material or a partition (such as a wall or window) to reduce the transmission of aerial sound. A higher STC number indicates better sound insulation.

Noise management plans: bylaws, measurement and neighbour relations – esinev

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