Measure Your Audio and Evolve Your Design Skills with audioXpress March 2024

The March 2024 issue of audioXpress includes an overview of the latest Audio Test and Measurement solutions, a review of the Listen SoundCheck 21 and AmpConnect 621 test suite, and a tribute to 20 years of Room EQ Wizard (REW). Learn how to build a True-RMS Voltmeter and what's behind the myth of Second Harmonic Distortion. Learn how motion feedback technologies can be applied to speakers, and how our hearing process affects our audio listening experiences, and much more. Dive in now!

Listen released SoundCheck 21, the latest version of its flagship audio test software. The update includes a new enhanced Loose Particles algorithm for transient distortion measurements in a wide range of devices. It also offers increased measurement capability with the new multichannel FFT analyzer. SoundCheck 21 also introduces support for AudioConnect 2, Listen’s new compact and high resolution (up to 192kHz sampling rate) two-channel audio interface.

Rational Acoustics and Audient announced the integration between the recently updated Smaart v9 audio and acoustical measurement software and the Audient EVO line of USB-C audio interfaces. The Smaart 9.1 update integrates the controls for phantom power and gain for Audient’s EVO devices - EVO 4, 8, and 16 - directly from within the Smaart interface. Additionally, gain tracking may be enabled to allow for automatic decibel offset recalculation for calibrated inputs.

The Listen AmpConnect 621 was unveiled earlier with the launch of SoundCheck 19 software, and is now available. The new multichannel, multifunction, high resolution audio test interface includes all the functionality required for audio testing in just one unit, including an amplifier, microphone power supply, line outputs and digital I/O. And with a sample rate of up to 192kHz, it supports measuring high resolution audio designs.

Studio Six Digital, designers of the popular AudioTools test and measurement system for the Apple iOS operating system, has discounted the AudioTools app by 50%, and the full suite of in-app upgrades by 30%. Now, they are also offering reduced pricing on all of their iOS and USB test & measurement microphones and audio interfaces to accommodate work-from-home technicians who have been displaced from their labs during the COVID-19 lockdown.