EASE Alternative: Cloud-Based Acoustic Design Without the $4,000 License

EASE (Enhanced Acoustic Simulator for Engineers) has been the industry standard for electroacoustic simulation since ADA (Acoustic Design Ahnert) released the first version in the early 1990s. Now developed and distributed by AFMG (Ahnert Feistel Media Group), EASE sits at the intersection of room acoustics and sound system design. Its primary strength — and the reason audio consultants pay $3,000 to $5,000 for a license — is its ability to model loudspeaker coverage patterns within a 3D room model.

But here is the critical distinction that gets lost in marketing: EASE is fundamentally an electroacoustic simulation tool that includes room acoustics as a supporting feature. If your work centres on sound system design — placing loudspeakers in worship spaces, configuring PA systems for conference centres, optimizing speech reinforcement in transportation hubs — EASE is purpose-built for that workflow. If your work centres on room acoustic compliance — verifying RT60, checking STI against building codes, selecting absorption materials, generating compliance reports — you are paying for a loudspeaker simulation engine you will never use.

This article draws a clear line between the two use cases and compares EASE with AcousPlan for each.

What EASE Does

Loudspeaker Simulation

EASE's core capability is modelling how loudspeakers interact with room geometry. Users place speaker models from a database of over 30,000 loudspeaker data files (GLL format) from manufacturers including JBL, Bose, d&b audiotechnik, L-Acoustics, Meyer Sound, and Electro-Voice. The software calculates:

• Direct SPL coverage: Sound pressure level maps showing how evenly a speaker array covers the audience area
• Speech intelligibility (STI/STIPA): How well speech will be understood at each listener position, accounting for both the room acoustics and the speaker directivity
• Frequency response per position: The tonal balance at any point in the room
• Delay alignment: Timing for distributed speaker systems to maintain coherence

Room Acoustic Modelling

EASE includes a 3D room modeller and calculates room acoustic parameters. It supports:

• RT60 via statistical methods and a ray tracing module (EASE AURA)
• Absorption coefficient assignment per surface
• ISO 3382 parameter calculation
• Basic auralization through the AURA module

EASE Versions and Pricing

AFMG offers several EASE configurations:

EASE Focus 3 is a lightweight tool for aiming line arrays and point-source speakers without room modelling. EASE Evac is specifically for EN 54-24 emergency voice alarm compliance. The full EASE 5 package is what competes in the room acoustic simulation category.

EASE's Strengths

Unmatched Loudspeaker Database

Over 30,000 GLL (Generic Loudspeaker Library) files from virtually every professional audio manufacturer. This is the single largest collection of measured loudspeaker data available in any simulation platform. When an AV consultant needs to model a specific JBL VTX A12 array or a d&b audiotechnik SL-Series system, EASE has the data.

Combined Electro-Acoustic and Room Acoustic Analysis

EASE models the complete signal chain: source signal, loudspeaker directivity, room reflections, and receiver position. This integration means STI predictions account for both the room's reverberant decay and the speaker's coverage pattern, which is essential for speech reinforcement design.

Industry Adoption in AV

EASE is the de facto standard for AV consultants worldwide. Many loudspeaker manufacturers provide EASE GLL files as standard documentation. Specifying a sound system without EASE modelling is increasingly rare for projects above a certain budget threshold. The software's market position creates a network effect — clients and contractors expect EASE reports.

EASE Evac for Life Safety

The EASE Evac module specifically addresses emergency voice alarm systems under EN 54-24 and BS 5839-8. It verifies that speech alarm signals achieve minimum STI thresholds throughout the building, including corridors, stairwells, and open areas. This compliance-driven functionality is unique to the EASE ecosystem.

Where EASE Falls Short for Room Acoustics

Sound System Focus Adds Complexity

If you are an architect checking whether a meeting room meets WELL v2 Feature 74 requirements for reverberation time, EASE requires you to work within a 3D modelling environment designed for loudspeaker placement. The interface, terminology, and workflow assume you are designing a sound system, not just checking room acoustic compliance.

No Automated Code Compliance

EASE does not include built-in compliance checking against building codes. It calculates acoustic parameters (RT60, STI, SPL) but does not automatically compare them against BB93, DIN 4109, ANSI S12.60, or other standards. The user must know the applicable limits and manually verify compliance.

Limited Material Database for Room Acoustics

EASE's material database is adequate for supporting loudspeaker simulations but is not as extensive as dedicated room acoustic tools. It does not include manufacturer-specific product data, cost information, or sustainability metrics.

No Treatment Optimization

EASE does not include features for acoustic treatment design — no material recommendation engine, no auto-solve to meet target RT60, no cost-performance comparison between treatment options. It tells you what the room sounds like; it does not help you fix it.

Desktop-Only

Like ODEON, EASE runs on Windows only. There is no web version, no cloud collaboration, and no ability to share live results with project team members.

Pricing for Occasional Use

At $4,000-5,000 for the full version, EASE is a significant investment. For AV consultants who use it daily, the per-project cost is small. For architectural practices or building services engineers who need room acoustic analysis a few times per year, the cost-per-use is prohibitive.

Feature Comparison: EASE vs AcousPlan

When You Actually Need EASE

EASE is the right tool when your project requires modelling the interaction between loudspeakers and room acoustics:

Sound Reinforcement Design

If you are designing a PA system for a conference centre, worship space, sports arena, or transportation hub, you need to predict how specific loudspeakers will perform in the actual room geometry. Only EASE (and to a lesser extent, CATT-Acoustic with its CATT-Speaker module) provides this integrated simulation.

Worship Space Audio

Churches, mosques, and synagogues present unique acoustic challenges: high ceilings, hard reflective surfaces, long reverberation times, and congregations that expect both intelligible speech and enveloping music. EASE allows designers to balance speaker placement and room treatment simultaneously.

Emergency Voice Alarm Systems

If your project requires EN 54-24 or BS 5839-8 compliance for emergency voice alarm, EASE Evac is the industry-standard tool. It verifies STI thresholds for speech alarm signals throughout complex building geometries.

Large Venue Audio Design

Concert halls, theatres, stadia, and arenas where the sound system is a primary design element. These projects justify EASE's cost because the loudspeaker simulation directly prevents expensive installation mistakes.

AV Consulting Practice

If your business is designing sound systems as a core service, EASE is a professional necessity. The GLL database, client expectations for EASE reports, and the depth of electroacoustic analysis make it indispensable for AV-focused consultancies.

When You Do Not Need EASE

EASE is not the right tool when your project involves room acoustics without sound system design:

Office Acoustic Compliance

Checking whether open plan offices meet WELL v2 Feature 74 or ISO 3382-3 requirements involves RT60 measurement or prediction, background noise assessment, and speech privacy evaluation. None of these require loudspeaker simulation.

Classroom Acoustics

ANSI S12.60 and BB93 specify maximum RT60 values and background noise levels for educational spaces. Compliance checking requires calculating RT60 from room dimensions and surface finishes, not modelling loudspeaker coverage.

Healthcare Facility Noise

Hospital acoustic design focuses on speech privacy (STC ratings), background noise control (NC/NR criteria), and reverberation in corridors and patient rooms. These are room acoustic and sound insulation tasks.

Residential Sound Insulation

Checking party wall STC/Rw performance and impact sound insulation (IIC/Ln,w) is entirely outside EASE's functionality. These require sound insulation calculation tools.

Preliminary Acoustic Assessments

Early-stage design decisions — "Will this room need acoustic treatment?" or "What RT60 will this material combination produce?" — are answered faster with a parametric tool than with a 3D room model.

Material Selection and Cost Estimation

Comparing absorption performance, cost per square meter, and carbon footprint across treatment options is a room acoustic workflow that EASE does not support.

The Real Question: Room Acoustics or Electroacoustics?

The decision between EASE and AcousPlan reduces to a single question: does your project involve designing a sound system?

If yes, you need the loudspeaker simulation that EASE provides. No cloud-based room acoustics tool replaces that capability. The GLL database, coverage mapping, and integrated electro-acoustic analysis are specific to sound system design, and EASE does them better than anything else on the market.

If no, you need room acoustic analysis — RT60 prediction, compliance checking, material selection, treatment optimization, and report generation. These tasks are EASE's supporting features, not its primary purpose. A dedicated room acoustic tool delivers these capabilities with less complexity, lower cost, and a workflow designed specifically for the task.

Using EASE and AcousPlan Together

For AV consultants who also handle room acoustic compliance, a combined workflow makes practical sense:

1. Room acoustic compliance (AcousPlan): Check RT60 and background noise against building codes. Select treatment materials. Generate compliance reports. Estimate treatment costs. This covers the architectural acoustic scope.

1. Sound system design (EASE): Model the treated room in EASE. Place loudspeakers. Verify coverage and STI with the room's final acoustic properties. Generate the AV specification.

1. Coordination: Use AcousPlan's material data (absorption coefficients, product specifications) as input for EASE's room model. The acoustic treatment designed in step 1 defines the reverberant environment for the sound system design in step 2.

Cost Comparison

EASE 5 (5-Year Cost)

AcousPlan Pro (5-Year Cost)

The 6x cost difference reflects the different markets these tools serve. EASE's price is calibrated for professional AV consulting firms where sound system design generates significant project fees. AcousPlan's pricing targets the broader market of architects, engineers, and consultants who need room acoustic analysis.

Migration Considerations

If You Currently Use EASE for Room Acoustics Only

If you have an EASE license but primarily use it for RT60 calculations and basic room acoustic analysis (not loudspeaker simulation), switching to AcousPlan eliminates the license cost while providing a more focused room acoustic workflow. Key differences to expect:

• Faster setup: Parametric room definition (enter dimensions) vs 3D modelling
• Automated compliance: Built-in code checking vs manual comparison
• Larger material database: 5,600+ materials with cost and carbon data vs ~500 materials with absorption only
• Treatment recommendations: AI-assisted material selection vs manual specification
• No loudspeaker simulation: If you occasionally need speaker modelling, you will need to retain EASE or use EASE Focus 3 (~$500)

If You Use EASE for Both Room Acoustics and Sound Systems

Consider maintaining EASE for sound system projects while using AcousPlan for room-acoustic-only projects. This reduces the number of projects that require EASE, potentially allowing you to share a license across a team rather than maintaining individual seats.

Verdict

EASE and AcousPlan serve different markets with different needs. EASE is the definitive tool for electroacoustic simulation — loudspeaker placement, coverage analysis, and sound system design within modelled room environments. AcousPlan is a dedicated room acoustic platform — RT60 compliance, material selection, treatment optimization, and report generation.

Choosing between them is not about which is better in absolute terms. It is about whether your project involves designing a sound system. If it does, EASE's loudspeaker simulation is irreplaceable. If it does not, a dedicated room acoustic tool delivers faster results with less complexity and lower cost.

For the majority of architectural acoustic work — offices, classrooms, healthcare facilities, residential projects — the sound system is someone else's problem. The acoustic consultant's job is to make the room comply with codes, select appropriate treatment, and document the design. That is precisely what a room acoustic platform is built to do.