Main Menu
- Home
- Products
- Applications
- Product Support
- Service
- Learn
- Product News
- About Us
- Contact Us
At Larson Davis, our products and services are constantly evolving. You'll find information relevant to your specific applications below, with links to more information on new products, downloads for the most up-to-date firmware, discontinuation notices, and upgrade opportunities. For detailed support documentation and resources for specific products, please visit our Support Portal.
As always, the Larson Davis Team is here to support you in your testing – you can reach us via ldsupport@pcb.com or at 1.716.684.0001.
Free software update available now for download improves the layering of graphed data for better readability and adds options that allow smaller sound recording files on the Sound Level Meter Model 821ENV. See Release History for details.
June 2025
Larson Davis is expanding our support in the U.S. geotechnical market through a strengthened collaboration with Syscom Instruments – offering integrated, expert-backed vibration, noise, and dust monitoring solutions for purchase or rental.
June 2025
Pair the Larson Davis Spartan™ Sound Level Meter with SoundPLANmanda software for powerful noise mapping. This integrated solution enables fast, compliant workplace noise analysis, helping identify risks and guide proactive noise control planning.
May 2025
Larson Davis expands its trusted Environmental Noise Monitoring Systems with new real-time noise, dust, and vibration monitoring via a single cloud-based platform featuring alerts and customizable dashboards.
May 2025
Larson Davis now offers Syscom ROCK Vibration Monitoring System for wireless, easy to deploy vibration monitoring with cloud-based reporting and exceedance alarms via email or SMS. Ideal for construction and civil engineering vibration monitoring.
April 2025
Useful for identifying the source of noise, now available as an optional firmware upgrade for SoundExpert Sound Level Meters is the ability to record sound, either manually or automatically during events with customizable trigger metrics and levels.
April 2025
Now available as an option on select Sound Level Meters is the ability to measure NC/RC ratings to characterize background noise. NC/RC ratings are available as part of optional firmware upgrade X21-NCRC for SoundExpert or 831C-RA for SoundAdvisor.
March 2025
G4 LD Utility v5.3 released from Larson Davis adds optional NC/RC curve support for SoundExpert 821ENV and SoundAdvisor 831C, new acoustic calibrator compatibility, and optional sound recording support for all Model 721 & 821 sound level meters.
March 2025
Acoustic Calibrator Models CAL1250, CAL1150, and CAL1200 released, designed to calibrate sound level meters, noise dosimeters, and other acoustic measurement equipment. They offer selectable output levels of 94 / 114 dB, ideal tools for field validation.
March 2025
Free software update with firmware upgrades for Larson Davis meters. Adds the ability to create custom reports and includes Agency Approval status in reports. See Release History for details.
August 2024
Free app update with firmware upgrades for Larson Davis meters. Adds support for Series 821 meters. See the app store for more details.
August 2024
Larson Davis has released Spartan Sound Level Meter Model 821IH, designed for Occupational Health and Safety professionals to assess workplace noise and employee exposure. Features built-in noise dose metrics, selectable time & freq. weightings, and more.
July 2023
Larson Davis has released SoundExpert Sound Level Meter Model 821ENV, a precision noise measurement instrument designed for both short-term and long-term environmental and product noise evaluations. Features a large touchscreen and a 40-hour battery.
July 2023
Free software update with firmware upgrades for Larson Davis meters. Includes improvements to Model 831C communication during calibration check and enhancements to Model 730 calibration routines, and more. See Release History for details.
March 2023
Free software update with firmware upgrades for Larson Davis meters. Adds support for ANSI standards for Audiometer Calibration, plus support for New Zealand standard NZ ONIHL-ACC, to Model 831C. See Release History for details.
January 2023
Sound Level Meter Model 831 is now being discontinued. We will continue to support legacy 831 units in the field. SoundAdvisor Sound Level Meter Model 831C offers all the same functionality, and new tools for connectivity and remote meter management.
June 2022
Free software update supports the optional firmware upgrade to add Room Acoustics measurements to SoundAdvisor Sound Level Meter Model 831C. Enhancements include the ability to view data on the Time History graph and support for new standards.
June 2022
Free app update supports the optional firmware upgrade to add Room Acoustics measurements to Sound Level Meter Model 831C. Plus, enhancements to communication with Model HVM200 and updates for compatibility with some iPhones.
June 2022
Optional Room Acoustics firmware for SoundAdvisor Model 831C is released, offering tools to evaluate reverberation time in compliance with the latest measurement standards for measurement of room acoustics. Click to learn more.
May 2022
Larson Davis has released the new AMC493C artificial mastoid is a precision mechanical coupler used to calibrate bone conduction hearing aids and audiometer bone vibrators.
March 2022
Effective immediately the 730IS is now MSHA-approved for use in methane gas environments.
February 2022
Free software upgrade offers automatic file download and export run in the background, even when G4 is not running, requiring no user intervention. Also supports the use of the new Artificial Mastoid AMC493C. See Release History for details.
February 2022
This version of DNA Software is compatible with the services first made available in LD Utility G4 V4.6.5 that provide background download and export of instrument data.
February 2022
Free software upgrade that offers the ability to sort data in G4 data by column and also integrates location visibility via Google Maps.
May 2021
Free software upgrade includes support of FFT Analysis firmware for SoundAdvisors Sound Level Meter Model 831C.
March 2021
For taking worker noise dose measurements where intrinsic safety ratings are required, the Spartan Intrinsically Safe Noise Dosimeter Model 730IS is now available. Spartan-IS provides completely wireless noise exposure measurements in hazardous areas.
July 2020
The Human Vibration Meter Model HVM100 is now discontinued. We will continue to support legacy HVM100 units in the field. We are also offering upgrade opportunities to the new Model HVM200 which offers connectivity and control via the LD Atlas mobile app.
June 2020
Have a complex schedule? No problem. Get only the data you need, change trigger limits as needed, and alert just the right people when there is a problem using the optional 831C scheduler (831C-SCH).
June 2020
Free software upgrade includes new project management options, searchable data files and improved file browsing, automatic data download, performance improvements, and much more.
June 2020