Cross-Spectrum Acoustics
Cross-Spectrum Acoustics is a private noise and vibration consulting firm serving U.S. federal, state, and municipal transportation agencies. It specializes in transit, rail, highway, and airport impact assessments, holds the exclusive FTA training contract, and sells calibrated measurement products via its Cross-Spectrum Labs subsidiary.
- Company typePrivate
- Founded2011
- HeadquartersEast Longmeadow, United States
- Headcount11–50
- GTM typeB2B
- OfferingServices
What Cross-Spectrum Acoustics does
Cross-Spectrum Acoustics Inc. (CSA) is a privately held noise and vibration consulting firm founded in 2011 by Herbert Singleton and Lance Meister in East Longmeadow, Massachusetts. The firm provides environmental noise and vibration impact assessments, mitigation design, and regulatory compliance services to federal, state, and municipal transportation agencies across the United States and Canada, with particular depth in transit, rail, highway, airport, and construction sectors. CSA staff have co-authored key federal guidance documents including the FTA Noise and Vibration Impact Assessment manual and the FRA locomotive horn noise model, and the firm holds an exclusive multi-year contract with the National Transit Institute to deliver the official FTA training course.
The firm's core technology stack combines industry-standard deterministic modeling tools (FHWA Traffic Noise Model, SoundPLAN, INSUL, FloorVibe, AISC Steel Design Guide 11, ArcGIS, AutoCAD) with proprietary deliverables including the FTA General Assessment spreadsheet and project-wide mitigation guidelines developed for the California High-Speed Rail Authority. CSA operates from four U.S. offices (East Longmeadow MA headquarters, Burlington MA, Salt Lake City UT, Culver City CA) and maintains DBE/MBE certifications in 18 states plus the District of Columbia to qualify for government contracting pipelines.
Revenue is generated through three streams: (1) project-based professional consulting for transit agencies, state DOTs, airports, and private developers; (2) recurring training courses delivered through the NTI partnership (held 2-3 times annually, with 400+ students trained over 15 years); and (3) the Cross-Spectrum Labs subsidiary, which sells calibrated measurement microphones, sound level meters, DSP hardware, and NIST-traceable calibration services (basic calibrations from $60). The firm employs 13 listed professionals with 150+ years of combined experience, multiple Board-Certified INCE members and P.E.-licensed engineers across 11 states, and operates as a bootstrapped, founder-owned business with no disclosed external investment.
Cross-Spectrum Acoustics firmographics
Firmographics- Name
- Cross-Spectrum Acoustics
- Legal name
- Cross-Spectrum Acoustics Inc.
- Website
- https://csacoustics.com
- Company type
- Private
- Founded year
- 2011
- Operating status
- Operating
- Headcount range
- 11–50 employees
- Short description
- Cross-Spectrum Acoustics is a private noise and vibration consulting firm serving U.S. federal, state, and municipal transportation agencies. It specializes in transit, rail, highway, and airport impact assessments, holds the exclusive FTA training contract, and sells calibrated measurement products via its Cross-Spectrum Labs subsidiary.
- Ownership category
- akta.pro rank
Cross-Spectrum Acoustics industry classification
Industry- Product category
- Acoustic and Vibration Consulting Services
- NAICS
- Testing Laboratories and Services (54138), Navigational, Measuring, Electromedical, and Control Instruments Manufacturing (3345)
- SIC
- Services-Testing Laboratories (8734), Industrial Instruments For Measurement, Display, And Control (3823)
- akta.pro primary industry
- Noise & Vibration Monitoring (Environmental/Community/Construction) (EUAHACAG)
- akta.pro secondary industry
- Noise & Vibration Exposure Monitoring (Hearing Conservation) (EUAHAGAC)
Keywords
Where Cross-Spectrum Acoustics is headquartered
LocationHeadquarters
- HQ city
- East Longmeadow
- HQ country
- United States
- HQ region
- North America
Offices4 records
Markets served
Cross-Spectrum Acoustics business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel
Revenue model
- Consulting Services: Professional consulting services for noise and vibration assessments, environmental impact statements, preliminary and final design of mitigation measures. Serves transit agencies, state DOTs, municipalities, developers, and private companies.
- Training Courses: CSA holds a 5-year contract with National Transit Institute (NTI) to teach FTA's transit noise and vibration training course. Three-day courses offered 2-3 times per year at various locations. Instructors have trained over 400 students.
- Products (Cross-Spectrum Labs): Sale of calibrated microphones (MiniDSP UMIK-1, UMIK-2, Dayton Audio EMM-6), sound level meters (Galaxy CM-140), DSP products, and custom microphone characterization/calibration services starting at $60.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Unit Pricing | Pay-as-you-go | Basic microphone calibration starting price |
Go-to-market motion1 record
Distribution channels3 records
Marketing channels5 records
Cross-Spectrum Acoustics product offering
Product offeringCore offering
Cross-Spectrum Acoustics provides professional noise and vibration consulting services for transportation, architectural, industrial, and community clients, delivering environmental impact assessments, TNM-based traffic noise modeling, preliminary and final design of mitigation measures, and measurement campaigns. Through its Cross-Spectrum Labs brand, the firm also sells calibrated measurement microphones, sound level meters, DSP products, and NIST-traceable custom microphone calibration services. It delivers the official FTA/NTI transit noise and vibration training course under a multi-year NTI contract.
Product overview
Cross-Spectrum Acoustics offers a portfolio of noise and vibration consulting services and calibrated audio products. The consulting services include transit/rail noise and vibration, traffic noise, wind turbine noise, construction noise, architectural acoustics, community noise, airport ground operations, and professional training. Through the Cross-Spectrum Labs brand, the company sells calibrated microphones (MiniDSP UMIK-1, MiniDSP UMIK-2, Dayton Audio EMM-6), sound level meters (Galaxy CM-140), and DSP products (MiniDSP 2x4), along with custom microphone characterization/calibration services starting at $60. The core consulting practice and product offerings are complementary, with products supporting measurement programs and calibration services.
Differentiator
Problem solved
Functional benefit
Brands
- Cross-Spectrum Labs: Microphone and sound level meter verification services, calibrated audio products, and custom microphone characterization/calibration services.
Products and services
- Transit, Freight, and High-Speed Rail Noise and Vibration Services Comprehensive consulting services for transit, freight, and high-speed rail noise and vibration assessments, including environmental impact statements, preliminary engineering, alternative analyses, and final design of noise mitigation systems for LRT, BRT, streetcar, heavy rail, commuter rail, intercity/high-speed rail, and freight rail. Delivered to federal, state, and local transit and rail authorities.
- Traffic Noise Consulting Services Traffic noise evaluations including screening assessments, noise impact studies, preliminary and final noise barrier design, FHWA TNM modeling, and NEPA documentation. Delivered to state Departments of Transportation including New York State DOT, Caltrans, Massachusetts DOT, Pennsylvania Turnpike Commission, Arizona DOT, Colorado DOT, Virginia DOT, and North Texas Tollway Authority.
- Wind Turbine Noise Assessments Wind turbine noise consulting including siting assistance, pre-construction noise measurement, computer modeling of noise effects, and post-construction compliance monitoring.
- Construction Noise and Vibration Analysis Construction noise and vibration consulting for transportation projects, stone processing, demolition, and residential excavation with mitigation recommendations.
- Architectural Acoustics Services Architectural acoustics consulting for learning spaces, offices, auditoriums, and transit facilities, including speech intelligibility analysis, sound isolation, structure-borne noise assessment, RT60, STC, and STI measurements.
- Community Noise Assessments Community noise consulting ranging from HVAC, industrial, and power plant noise to chicken crowing, car washes, and gun clubs, including OSHA hearing conservation compliance and permit applications.
- Airport Ground Operations Noise Services Airport ground operations noise assessments including maintenance run-ups, taxi operations, thrust reversers, and ground run-up enclosure design, plus structural vibration measurement.
- Noise and Vibration Measurements Short-term and long-term environmental noise monitoring for transportation, construction, wind energy, industrial sites, and community assessments, plus OEM product testing and audio system measurements.
- Transit Noise and Vibration Training Three-day FTA/NTI-approved training course on transit noise and vibration impact assessment covering screening, general and detailed assessments, mitigation measures, and construction noise. CSA instructors have trained over 400 students through this curriculum.
- Custom Microphone Characterization and Calibration Services Custom microphone characterization and calibration services delivering on/off-axis free field frequency response, noise floor, sensitivity, polar response, and output impedance measurements using a substitution method with a NIST-traceable microphone, consistent with IEC 60268-4. Basic-level calibrations start at $60 including domestic shipping.
- Calibrated Measurement Microphones and Sound Level Meters Sale of calibrated audio measurement products including the MiniDSP UMIK-1 and UMIK-2 USB measurement microphones, Dayton Audio EMM-6 precision measurement microphone, Galaxy CM-140 sound level meter, and MiniDSP 2x4 Digital Signal Processor (US customers only), sold through the Cross-Spectrum Labs storefront.
Quantifiable outcome
- 500+ transit and rail noise and vibration projects completed
- +2 more outcomes
Companies that use Cross-Spectrum Acoustics
Customer profileNamed customers14 records
Segments6 records
Ideal customer profiles4 records
Cross-Spectrum Acoustics technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature5 records
Cross-Spectrum Acoustics partnerships and signals
Strategic signalPartnerships
Four partnerships are on record, tiered core and flagship.
- National Transit Institute (NTI)coreCSA was awarded a 5-year contract (renewed) by NTI to teach the FTA's transit noise and vibration training course. NTI sponsors and administers the 3-day courses which are offered 2-3 times per year across the country. CSA instructors have trained over 400 students through this partnership.
- Federal Transit Administration (FTA)coreCSA staff are co-authors of the FTA guidance manual on noise and vibration impact assessment and serve as instructors for the official NTI/FTA training courses. CSA developed the General Assessment spreadsheet used and distributed by FTA.
- Federal Railroad Administration (FRA)coreCSA staff co-authored FRA's manual for high-speed ground transportation projects. Lance Meister designed FRA's locomotive horn noise model used to assess noise at grade crossings.
- California High-Speed Rail AuthorityflagshipCSA worked on the noise and vibration portion of the Merced-Fresno segment of the California High-Speed Rail Project, the largest high-speed rail project in the US. CSA staff developed project-wide noise and vibration mitigation guidelines used by consultant teams on all project segments.
Scale indicators6 records
Recent moves8 records
Expansion highlights5 records
Cross-Spectrum Acoustics competitors and assessment
Company assessmentBroad incumbents
- ARCADIS: Global design and consultancy firm with environment and mobility practices covering noise impact assessment for transit, highway, and urban development. Competes with CSA on large environmental impact statement and design projects.
- AECOM: Global multi-disciplinary engineering and environmental services firm with a transportation environmental practice that includes noise and vibration assessment on large transit and highway megaprojects. Competes with CSA on large prime contracts where it can self-perform noise work.
- WSP: Global professional services firm with a substantial environment and transportation practice that includes acoustics and noise/vibration capabilities on transit and highway design projects. Competes with CSA at the prime-contract level on major infrastructure work.
- Jacobs Engineering: Large engineering and professional services firm with environmental and transportation practices that include noise and vibration assessment capability. Competes with CSA on transit, rail, and highway megaproject primes.
Direct peers
- Wilson Ihrig & Associates: California-based acoustical consulting firm specializing in rail and transit noise/vibration, highway noise, and architectural acoustics. Highly comparable to CSA in clientele (transit agencies, state DOTs), methodology (FTA/FHWA guidance), and niche focus on transportation noise.
- Illingworth & Rodkin: California-based acoustical consulting firm focused on environmental noise, transportation noise (highway, rail), and architectural acoustics. Directly comparable in services and government consulting orientation.
- Acentech: Multi-disciplinary acoustics, noise control, and vibration consulting firm serving architects, building owners, and transportation clients. Comparable to CSA's architectural acoustics and environmental noise practices; overlaps on building and transit facility projects.
- HMMH (now part of SLR Consulting): Historic aviation, highway, rail, and environmental noise consulting firm with deep FAA/FRA expertise and large workforce; absorbed into SLR Consulting. Closest peer to CSA in federal regulatory positioning, aviation ground operations work, and FTA/FHWA assessment methodology.
- Resource Systems Group (RSG): Specialized consulting firm providing transportation planning, environmental, and air/noise analysis services with strong practice in NEPA documentation for transit and highway projects. Overlaps with CSA on transit and traffic noise impact assessment work.
- Veneklasen Associates: Full-service acoustical consulting and engineering firm specializing in architectural acoustics, environmental and industrial noise, and vibration. Comparable to CSA's architectural and community/industrial noise practices with similar project types.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat4 records
Key risks6 records
Key highlights7 records
Customer concentration
Cross-Spectrum Acoustics social profiles
Digital presenceCross-Spectrum Acoustics financial estimates
Financial estimateRevenue estimate
Valuation estimate
Cross-Spectrum Acoustics leadership team
Management profileNumber of profiles
Profiles15 records
Cross-Spectrum Acoustics subsidiaries and ownership
Company hierarchySubsidiaries1 record
Cross-Spectrum Acoustics funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Cross-Spectrum Acoustics M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Cross-Spectrum Acoustics
What does Cross-Spectrum Acoustics do?
Cross-Spectrum Acoustics provides professional noise and vibration consulting services for transportation, architectural, industrial, and community clients, delivering environmental impact assessments, TNM-based traffic noise modeling, preliminary and final design of mitigation measures, and measurement campaigns. Through its Cross-Spectrum Labs brand, the firm also sells calibrated measurement microphones, sound level meters, DSP products, and NIST-traceable custom microphone calibration services. It delivers the official FTA/NTI transit noise and vibration training course under a multi-year NTI contract.
Is Cross-Spectrum Acoustics a public or private company?
Cross-Spectrum Acoustics is a private company. It is classified as founder individual operated bootstrapped and is currently operating.
When was Cross-Spectrum Acoustics founded?
Cross-Spectrum Acoustics was founded in 2011. It employs 11 to 50 people.
Where is Cross-Spectrum Acoustics based?
Cross-Spectrum Acoustics is headquartered in East Longmeadow, United States, in the North America region.
How does Cross-Spectrum Acoustics make money?
Three revenue lines are on record. Consulting Services are the primary driver. The others are training Courses and products (Cross-Spectrum Labs).
Who are Cross-Spectrum Acoustics's main competitors?
Broad incumbents on record are ARCADIS, AECOM, WSP and Jacobs Engineering. Direct peers are Wilson Ihrig & Associates, Illingworth & Rodkin, Acentech, HMMH (now part of SLR Consulting), Resource Systems Group (RSG) and Veneklasen Associates.
Does Cross-Spectrum Acoustics have an API?
No public API is recorded for Cross-Spectrum Acoustics.
What industry is Cross-Spectrum Acoustics in?
Cross-Spectrum Acoustics's product category is Acoustic and Vibration Consulting Services. Its primary akta.pro industry code is EUAHACAG, Noise & Vibration Monitoring (Environmental/Community/Construction), with a secondary code of EUAHAGAC, Noise & Vibration Exposure Monitoring (Hearing Conservation). Its NAICS code is 54138 and its SIC code is 8734.