Audio THD with QSPICE: An Interview with Mike Engelhardt

The creator of LTspice has designed a new and much improved simulation tool suite called QSPICE (the Q is for Qorvo, the company that supported the new effort). Mike Engelhardt, physicist, analog engineer, and entrepreneur talked to Tim McCune, former president of Linear Systems, to discuss how QSPICE can help solve many issues that audio designers simulating their circuits might confront.

When Ethan Winer found himself in need of an oscilloscope, he turned to the Internet for advice and ended up selecting LabNation’s SmartScope. Described by its makers as “the oscilloscope of the new generation” the device, originally funded by a Kickstarter campaign, is targeted at makers and hobbyists, as well as professional engineers. In his review, Winer explains why this digital oscilloscope, signal generator — analog and digital — and eight-channel logic analyzer from LabNation turned out to be perfect solution for his needs.

Stuart Yaniger provides an in-depth look at the Virtins Multi-Instrument Software, for data acquisition and measurements. The Multi-Instrument package from Virtins Technology — a Singapore-based company — is one of the most powerful and versatile. This article is a very complete review of what Multi-Instrument entails and what distinguishes it from other software packages and dedicated solutions. This article was published in audioXpress, March 2016.

As previewed back in October 2017, COMSOL now made available the latest release of its COMSOL Multiphysics and COMSOL Server software products. Version 5.3a provides simulation specialists with cutting-edge modeling tools and increased solver performance. Featuring new methods, material models and simulations, the new software includes a hybrid boundary element-finite element (BEM-FEM) method for acoustics and acoustic-structure interaction, among many valuable new tools.

The new line includes the full-range StudioLive 312AI, 315AI, and 328AI 3-way powered speakers and the StudioLive 18sAI powered subwoofer. All models use custom drivers, Class-D amplifiers, wireless and wired networking and communications with powerful DSP to create a unified …

The enormous success of Prism Sound’s Audio Design Workshop LIVE event at the 51st AES Conference in Helsinki has inspired the company to launch a new, free series of 30-minute webinars – Audio Design Workshop: Bitesize. These webinars are ideal …