Computational Acoustic Modeling Laboratory - equipment
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2026-05-05T10:09:44+00:00Computational Acoustic Modeling Laboratory
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Acoustic Measurement Microphone Array (AMMA)
The Acoustic Measurement Microphone Array (AMMA) is a specially-designed 72-element audio sampling system that features a reconfigurable 8-segment 180-degree arc with 64 evenly distributed transducing elements at a radius of 550 – 590 mm. There is an additional 8-element linear array comb that can be used in conjunction with the system.text/html2025-06-02T18:11:29+00:00Anonymous (anonymous@undisclosed.example.com)capteurz
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CapteurZ Acoustic Impedance Measurement System
The CapteurZ Impedance Measurement System was purchased from the Centre de Transfert de Technologie du Mans (CTTM), Le Mans, France. It is a relatively easy-to-use impedance probe that provides accurate results up to about 4 kHz.text/html2025-06-02T18:11:29+00:00Anonymous (anonymous@undisclosed.example.com)comsol-howto
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First steps with COMSOL 4.2 and Cluster Computing, by Maxime Harazi
Geometry
Physics
Meshing
Simulation
Results
Cluster Computing
COMSOL simulations can be run on clusters. Here is explained how to use COMSOL 4.2 on Colosse, one of the clusters of CLUMEQ (text/html2025-06-02T18:11:29+00:00Anonymous (anonymous@undisclosed.example.com)espi
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Electronic Speckle Pattern Interferometry (ESPI) System
A system to visualize structural vibrations using ESPI has been in development in CAML since 2017. The system includes:
* Kinetic Systems Vibration Isolation Table ([Instruction Manual])
* Laserglow 532 nm Green Laser ([Instruction Manual])
* A Basler ace 2 USB-3 camera
* Microscope objectives (text/html2025-06-02T18:11:29+00:00Anonymous (anonymous@undisclosed.example.com)ldvscan
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Scanning LDV System
CAML owns a single-point [Polytec PDV-100 Laser Doppler Vibrometer](LDV). A small additional system has been designed and built by Mark Rau to allow the single-point LDV to be used as a scanning LDV. This page describes the setup and operation of that system.
When used as a single-point system, the LDV is normally mounted on a camera tripod. In the context of measuring string instrument admittances, the instrument is typically excited with one of our miniature impact hammer…text/html2025-06-02T18:11:29+00:00Anonymous (anonymous@undisclosed.example.com)motorimpact
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Motorized Impact Hammer System
The motorized hammer system was designed and built by Mark Rau to allow precise motorized triggering and control of either of our miniature impact hammers (PCB Model 086E80 or [B&K Type 8203]).
The system consists of a stepper motor that is controlled by an Arduino microcontroller. The system has an attached trigger button that can be used to manually trigger the hammer, though the hammer can also be triggered by sending it a serial command message. The system in…text/html2025-06-02T18:11:29+00:00Anonymous (anonymous@undisclosed.example.com)mwp
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The Mechanical Player System
A mechanical player system has been in development and use in CAML since 2018. It has primarily been used thus far for studies of saxophone cane and synthetic reed fatigue. The system is composed of:
* An electric air pumptext/html2025-06-02T18:11:29+00:00Anonymous (anonymous@undisclosed.example.com)sysnoise-howto
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An LMS SYSNOISE HOWTO ("Hello pipe!") by Tristan Matthews
Preamble
This document outlines the basic steps required to determine the acoustic impedance at a given point inside an open-closed pipe, using LMS Sysnoise in conjunction with MATLAB. Note that the majority of operations done in Sysnoise can be accomplished by entering commands either directly into Sysnoise's command-line input window, or by running a .cmd file (like a batch file) from Sysnoise. This can automate any operation in Synoi…text/html2025-06-02T18:11:29+00:00Anonymous (anonymous@undisclosed.example.com)zprobe
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zProbe Parts. zProbe in use.
Hardware
* Impedance head with 6 [PCB 377B10 Condenser Microphones] and [426B03 Preamplifiers]
* [JBL 2426H Compression Driver]
* Calibration pipe (2 meters)
* Rack containing:
* [RME Fireface 800 Audio Interface] and cable
* [PCB 483C15 Signal Conditioner]
* Bryston 2B-LP Pro Amplifier (available but no longer used in general)
* various adaptors as needed
Software Installation