How Hardware Startups Use Acoustic Testing to Find Hidden Defects

Hardware Startups with Fexingo: Devices, Robotics, and Manufacturing Tech Companies · Aug 6, 2026 · 8m · transcript

In this episode, Lucas and Luna explore how hardware startups are using acoustic testing to catch defects that visual inspection and traditional functional tests miss. They dive into a real case: a compact drone startup that reduced field failures by 40 percent using microphone-based test fixtures. The conversation covers the physics of acoustic signatures, how startups can build low-cost test rigs with off-the-shelf microphones and spectral analysis software, and why this technique is especially valuable for sealed enclosures, motor bearings, and PCB solder joints. They also discuss the…