All items tagged with sound levels (9)

Expand Your Audio Development Skills with audioXpress March 2025

February 12, 2025 by audioXpress Staff

Expand Your Audio Development Skills with audioXpress March 2025

audioXpress March 2025, focused on Test and Measurement and audio electronics, explains how to test Power Amplifiers, and how to measure HDMI Audio. Explore the possibilities of George Ntanavaras' SL-100 Sound Level Adjuster and Tom Perazella's Reinforced Speaker Protection solution. Read the interview with Mike Engelhardt, explaining everything about audio THD with QPSICE circuit simulation. Brian Lowe concludes its article on Op-Amp for Phono Preamps, and much more.

Warkwyn Adds CESVA’s Acoustic Instrumentation to Its Lineup

April 7, 2023 by audioXpress Staff

Warkwyn Adds CESVA’s Acoustic Instrumentation to Its Lineup

Loudspeaker engineering consulting firm Warkwyn is now offering the complete lineup of acoustic and electroacoustic instrumentation from CESVA in the US. The Barcelona-based company offers a complete line of sound level meters and spectral analyzers for advanced measurements, amplifiers and instrumentation for measuring and assessing sound insulation, long term and permanent noise monitoring solutions, as well as logger-limiters.

Listen Releases Free Automated Test Sequence for AES75-2002 Measurements

November 18, 2022 by Joao Martins

Listen Releases Free Automated Test Sequence for AES75-2002 Measurements

Listen is the first test and measurement company to automate measuring loudspeakers to the new AES75-2022 (M-Noise) standard for Maximum SPL. This removes subjectivity, increases reliability, and saves time. The test sequence, developed for use within the company’s popular SoundCheck audio test and measurement system, is available free of charge on Listen’s website. And Listen is now offering the new Portland Tool & Die MDT-4000 audio measurement turntable, fully controllable from within SoundCheck.

Development and Design: Sound Level Evaluation for Raspberry Pi 4

April 13, 2022 by Ben Chen

Development and Design: Sound Level Evaluation for Raspberry Pi 4

This article proposes a Sound Level Evaluation solution based on the popular Raspberry Pi 4 and the possibilities of using the Sfera Labs' Exo Sense Pi - a compact multi-sensor module - as a sound meter. The Exo Sense Pi combines several environmental sensors and connectivity options, and integrates a digital microphone which can be used to evaluate ambient noise levels or measuring noise sources. This article was originally published in audioXpress, March 2022.

The Audio Measurement Issue! audioXpress March 2022 is Now Available

February 11, 2022 by audioXpress Staff

The Audio Measurement Issue! audioXpress March 2022 is Now Available

audioXpress March 2022 features an extensive Market Update report on the latest audio test and measurement tools. Matt Taylor explains the possibilities of REST for automated test and measurement, and Joe Begin (Audio Precision) addresses testing multichannel MEMS microphone arrays. The KEF KC62 subwoofer is reviewed by Oliver Masciarotte and measured by Kent Peterson, and Ben Chen explains how to use the Sfera Labs' Exo Sense Pi module as a sound meter. Download or read online now.

Apple Promotes Hearing Health with new WatchOS6 Noise Control Feature

September 23, 2019 by audioXpress Staff

Apple Promotes Hearing Health with new WatchOS6 Noise Control Feature

The new Noise app, introduced with watchOS 6 for any Apple Watch Series, helps users understand the ambient sound levels in environments such as concerts and sporting events that could negatively impact hearing. As the sound levels change, the app’s decibel meter moves in real time. The watch can send a notification if the decibel level reaches 90 decibels, which can begin to impact hearing after four hours per week of exposure at this level, according to the World Health Organization.

Practical Applications for SPL Meters

September 6, 2017 by Ethan Winer

Practical Applications for SPL Meters

Following his original 2008 essay on sound pressure level (SPL) meters, in this article for audioXpress published in March 2015, Ethan Winer considers some practical applications for a basic SPL meter, such as calibrating loudspeaker levels and measuring room acoustics, using a simple Galaxy Audio CM-130 SPL Meter as an example. He then moves on to a more sophisticated model, the NTi Audio XL2.

NTi Audio Launches Useful Sound Level Visualization with the Projector PRO Update

August 9, 2017 by audioXpress Staff

NTi Audio Launches Useful Sound Level Visualization with the Projector PRO Update

NTi Audio has launched a new generation of the very popular display projector for the XL2 Sound Level Meter. The new version of this very popular sound level visualizer now features an XL View Level display, a prediction mode available in a separate window, and the ability to retrieve measurement data from the XL2 without interruption to the measurement process.

NTi Audio Introduces “Locked Run” Mode for XL2 Sound Level Meter

July 8, 2015 by audioXpress Staff

NTi Audio Introduces “Locked Run” Mode for XL2 Sound Level Meter

Just turn it on! Says NTi Audio. The newly-available “Locked Run” mode of operation for the XL2 Sound Level Meter allows untrained personnel to perform sound level measurements according to pre-established parameters. Data recording starts immediately after switching on and continues until the device is turned off.