Elektor Lab Talk #45: Audio Measurements and Lab Updates with Alfred Rosenkränzer
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Audio measurements are the focus of Elektor Lab Talk #45, 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 was be a bench-level discussion and viewers got 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.
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 made 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
Three copies of The Complete Linear Audio Library (USB Stick), Jan Didden’s searchable collection covering audio, acoustics, and instrumentation was our giveaway.

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