Modal Analysis
Model Correlation
Modal Testing with Laser Vibrometer
Impact Testing
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Vibration Consulting Services
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AIT-2 Modal Survey
Commercial & Military
Vibration Control
Modal Testing
Vibration Testing
Model Correlation
Structural Dynamic Modification
Vibration Consulting Services
Floor Frequency Response Testing
Floor Vibration Testing
Train Ground Vibration Testing
Noise Consulting Services
3D Noise Map Power Plant
Noise Model Cogen
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Gas Plant Noise Model
Noise Consulting Services
Noise Barrier Analyses
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Noise Impact Analysis
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Blast Noise Measurements
Noise Consulting Services
Sound Identification - Acoustic Intensity
Roller Coaster Noise Survey
Sound Power Level - Acoustic Intensity
Wind Energy Noise Model
Noise Consulting Services
Rail Retarder Noise Model
Train Idle Noise Model
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In House Training and Workshop
Custom tailored training seminars
Noise Barrier / Wall Design
Hands-On Modal Testing
dBSea - Underwater Noise Prediction
dBSea - Underwater Propagation

dBSea has been developed by Marshall Day Acoustics as a powerful tool for the prediction of underwater noise in a variety of environments.

dBSea is ideal for the investigation of underwater acoustic problems involving single or multiple sources using solvers covering a wide frequency range.

Noise Consulting Services Overview

Noise has a multitude of effects on our environment and society.  As part of modern civilizations standards and legal ruling have been developed and are continuously updated to set parameters for equipment limits, city, state or federal requirements.  These standards and legal rulings regulate what is consider audible, acceptable, allowable or s

Validation and Updating of FE Models for Structural Analysis

During this FE Model Validation and Updating seminar, the participants will not only learn the basic principles of test-analysis correlation and finite element model updating, but also get hands-on experience using specialized software (FEMtools).

APS Dynamics Inc. Shaker & Amplifiers

The Company began operations in Anaheim, California in 1971 as Acoustic Power Systems, Inc. Initially, the Company specialized in the development of high power acoustic generators. Subsequently, the company focused on the development of electro-dynamic shakers and power amplifiers. The Company's name was changed in 1989 to APS Dynamics, Inc.

IRIS 3D Acoustic Impulse Response
IRIS Software Hedgehog display

IRIS is a room acoustics measurement system developed by Marshall Day Acoustics in New Zealand. It was released at the beginning of 2014 as a fully integrated hardware and software system for making 3D impulse response measurements.

DP - Quattro Analyzer

Principal Hardware Specification

SoundPLAN - essential

SoundPLAN-essential is a single document application including all the basic information for noise control modeling and planning. It calculates noise from roads, railways or industrial noise sources. The computation can include one or multiple noise sources.

SoundPLAN - Sound Propagation Modeling Software
SoundPLAN v8 Manager GUI

SoundPLAN is an acoustic ray tracing program for noise propagation prediction written by the German acoustical consulting firm, SoundPLAN GmbH.

Attend one of our training sessions

Impact Modal Testing
Training dates:

Tuesday, January 25, 2022 to Friday, January 28, 2022

Tuesday, May 3, 2022 to Friday, May 6, 2022

Tuesday, August 9, 2022 to Friday, August 12, 2022


Noise Contour Examples from SoundPLAN training
Training dates:

Thursday, March 24, 2022 to Friday, March 25, 2022

Thursday, October 6, 2022 to Friday, October 7, 2022


Training dates:

Monday, November 7, 2022 to Wednesday, November 9, 2022


Noise Measurement, Noise Modeling, Noise Assessment
Training dates:

Tuesday, March 22, 2022 to Wednesday, March 23, 2022

Tuesday, October 4, 2022 to Wednesday, October 5, 2022