Trident Multi-Channel Acoustic Analyzer

Nelson Acoustics Trident software is a real-time multi-channel, multiple analysis, acoustic measurement application for use in:

The Trident software application can be used in most any acoustic environment.  Applications include:

Trident operates on National Instruments data acquisition hardware devices such as:

These devices provide a wide range on input voltage capabilities, sampling rates, interface types and price points for creating everything from low cost sound level measurement systems to high end laboratory test systems.

Multi-channel real time acoustic analyzer software for national instruments digital signal acquisition devices. Measure sound pressure, sound power levels, FFT analysis, ISO 532B* Loudness analysis, calibrated time waveform recording module.

Learn more about Trident and it’s analysis capabilities on the Features Tab.

*ISO 532B: Acoustics — Method for calculating loudness level

Trident Features at a Glance:
dB meter
Trident – Sound Level Analysis

Trident’s basic operational mode is the sound level meter mode.

Trident – FFT Analysis

Trident’s FFT analyzer provides users with a high resolution, multi-channel FFT analyzer with graphical zoom and cursoring options.

Trident – ISO 532B Loudness (Sones)

Trident’s ISO 532B Loudness Analyzer conducts loudness analysis in parallel with the sound level meter and FFT analysis.

Audio mixer
Trident – Time Waveform Recording

Trident’s calibrated time wave-form recorder creates multi-channel calibrated audio WAV file recordings in parallel with the measurement functions of Trident.

Notebook and lens concept
Trident – Reference Spectrum Display

Trident’s Reference Spectrum Feature is a powerful display tool that allows comparison of the current sound pressure levels to stored spectra.

Business data financial report print close up. Blue toned.
Trident – MS Excel Export

Quick and easy export allows users to export their data into MSExcel spreadsheets or text files.

Trident – Sound Intensity

Trident’s sound intensity module operates in parallel with the sound level measurement features of Trident, allowing you to acquire both sound pressure levels and sound intensity levels simultaneously.

Podium in Empty room yellow
Trident – Reverberation Time Analyzer

Trident’s Level versus Time module conducts reverberation time analysis for building acoustics applications.

Pass Fail
Trident – Limit Analyzer

The Trident Limit Analyzer feature is designed to support end of line product test and other Pass/Fail type measurement applications.

Request a Demo

Please contact VIacoustics at for more information and an online demonstration of this product.

Nelson Acoustics Trident software is available in a modular license format that allows you to purchase only the modules you need for your measurement application, making Trident an affordable acoustic measurement software alternative for most any application.

License Type  Awtd or Recording Only 
(Note 1,2)
1/N octave and A-wtd

(Note 1) 
Add  Modules
FFT, Loudness or Time Waveform Recording
(Note 3)

Full Package
A-wtd, 1/N octave, FFT, Loudness and Recording

System Integration

(Note 4) 

USB - Single Channel 



+ $1,000 ea 


+ $500 

 USB - Single Device



+ $1,000 ea 


+ $500 

PCI/PXI Single Device 



+ $1,000 ea 


+ $750 

USB/PCI/PXI Multi-Device 



+ 1,000 ea 


+ $1,000 

Note 1 - Includes Run Time License to National Instruments Sound and Vibration Toolset 

Note 2 - 25% discount for Recording Only Trident license when purchased with Nelson Acoustics Sound Quality Analyzer 

 Note 3 - Add on modules purchased after initial software purchase subject to additional license upgrade fee of $250

 Note 4- System integration includes installation of drivers, software and configuration of Trident only.  System integration services performed at ViAcoustics facilities.  ViAcoustics must provide PC (at additional cost) or user must provide a NEW host PC to ViAcoustics specifications.  Additional system integration costs may be applied for systems with multiple microphones or other system components.  Exact system integration costs provided with system quotations.

Trident Add-On Modules 

Limit Analyzer Feature 


Reverberation Time Modules (Single USB Device) 


Reverberation Time Module (PCI/PXI Devices) 


Sound Intensity (Single USB Device) 


Sound Intensity (PCI/PXI Devices) 


Sound Intensity with GRAS Wide Band Probe Sound Intensity Support 


Trident Developers Modules
LabView callable modules for building custom measurement applications using Trident's 1/N, FFT or ISO 532B Loudness analysis 


Trident Software Annual Upgrade and Maintenance Contract Options 

When purchased at time of software purchase and maintained continuously since software purchase 

of software cost 

When purchased at time upgrades are available 

since purchase

System Installation, Training and Support Options 

System installation and training services are provided by ViAcoustics.  Training is provided by an acoustic engineer with over 30 years experince in acoustic measurement.  Training services include how to use the Trident software and how to apply it to your measurement application.

Online Training - Single Device 1/N & Awtd Only (1 or 2 sessions, 5 hrs max) 


Online Training - Multi-Device 1/N & Awtd Only (1 or 2 sessions, 6 hrs max)


Online Training - Multi-Device/Multi-Analysis (1 or 2 sessions, 8 hrs max) 


Onsite Installation and Training - All Configurations, Most US Locations 


Annual Support Contract - Single Device Awtd, 1/N octave or Recording Only 
Up to 10 hours telephone, e-mail or online support


Annual Support Contract - Multi-Device or Multi-Analysis
Up to 20 hours telephone, e-mail or online support


Annual Support Contract Renewal (after first year)
(50% of hours listed above) 

of above

Additional Hours Training or Support 


Customized Analysis Template Spreadsheets for Trident 

$500 to
$1.000 each 

 Online training discount of 20% if system integration services have been purchased

Software Timed License Rental Options

The Nelson Acoustics Trident software is also available with timed licenses for use on short term projects or for companies that want to expense their software purchases.  A USB based licensing key will be provided with timed license software rentals.  The USB key must be present in the system for the software to operate.

90 day software rental 

25% of license cost
+$250 license key fee  

1 year software rental 

50% of license cost
+$250 license fee key 

Notes :

  1. Software rental costs, exclusive of license key fees, may be applied to Trident license purchase at end of rental period
  2. Standard system integration, training and support costs, as needed, are applicable in addition to software rental prices