Technical Authority and Metrology
A specialist in Microbiology and Biochemistry from UNICAMP and ETECAP, Alexandre Carvalho Rezende applies the rigor of the laboratory to the listening room. With postgraduate studies in Chemistry and a specialization in Data Science, his trajectory is guided by a deep understanding of the molecular composition of vinyl and mechanical physics. He masters the analysis of contaminating agents and materials chemistry, translating the subjectivity of audio into the technical precision required for elite phonographic preservation and reproduction.
Role at abmusics
As Technical Director and Editor-in-Chief of abmusics.com, Alexandre coordinates the scientific validation of cleaning, restoration, and high-fidelity calibration protocols. He leads the portal’s precision metrology initiatives, transforming complex interactions between the diamond stylus and the record groove into practical guides for sound engineering. His mission is to ensure that every editorial guideline respects the physical integrity of equipment and the chemical purity of audio, eliminating amateur uncertainty through the technical support of ABWaves. 🎧
I spent three hours aligning a high-end cartridge using a professional-grade protractor. My procedure was meticulous. I measured six times. All six measurements read exactly 21.5 degrees—perfect repeatability. The standard deviation was 0.0 degrees. I was thrilled. The measurements were identical.…
Every vinyl enthusiast has experienced it: that moment when you pull a record from its sleeve and feel its weight, its rigidity, its substance. You’re holding something tangible—not a stream of data, not an abstraction. But few of us think…
The first time I truly understood the mechanical complexity of vinyl playback was in a laboratory setting where researchers had mounted strain gauges on a turntable and were measuring real forces during playback. What fascinated me most wasn’t any single…
I was working with a turntable technician when he handed me a test record and asked me to listen carefully to the final minute before the label. “Notice how it sounds different?” he asked. I did—a tightness, a compression, almost…
I remember the exact moment a colleague placed a precision measurement tool under my magnifying glass and showed me something I’d overlooked for years: the groove walls of a vinyl record aren’t merely shaped—they’re engineered with tolerances measured in microns.…
