Audio measurements are the focus of Elektor Lab Talk #45, scheduled for Thursday, April 23, 2026, at 16:00 CEST, with Brian Tristam Williams and Jens Nickel joined by Alfred Rosenkränzer for a practical session on distortion measurement, QuantAsylum QA403-based work, USB sound interfaces, and current Elektor Labs projects.

This will be a bench-level discussion and viewers can expect live demonstrations, shared analyzer software screens, and the sort of practical detail that matters once the probes are actually on the circuit.

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Audio Measurements on the Bench

Alfred will have a live demo, and Jens will show a USB audio analyzer setup. The discussion is expected to cover notch-filter-based distortion measurement, QuantAsylum QA403-based measurement work, and the strengths and weaknesses of USB sound interfaces.
 

Promotional graphic for Elektor Lab Talk #45 about audio measurements and Elektor Labs projects and updates, featuring a QuantAsylum QA403 Audio Analyzer and Alfred Rosenkränzer.
Elektor Lab Talk #45 will cover audio measurements, Elektor Labs projects, and updates.


For readers who want some context before the stream, Elektor’s Lab Talk page, Rosenkränzer’s author page, and his earlier audio-measurement webinar offer a solid starting point.

Audio Measurements, Distortion, and Practical Setups

This will make the episode useful to more than dedicated hi-fi readers. The same measurement discipline matters to anyone testing amplifiers, analog stages, signal chains, or mixed-signal hardware and wanting results better than “it looked fine on the first screenshot.”

We have also published a review of the QuantAsylum QA403, which gives some background on one of the tools likely to feature in the discussion.

Lab Updates and Giveaway

As with other Lab Talks, the show is also expected to include Elektor Labs updates and a look at recent or upcoming magazine content. There is also a giveaway: three copies of The Complete Linear Audio Library (USB Stick), Jan Didden’s searchable collection covering audio, acoustics, and instrumentation. That gives the stream a nice bonus, but the real draw is the chance to watch experienced engineers discuss what actually works on the bench, rather than pretending every measurement setup is effortless and self-explanatory.

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