Historic recordings made around 432 Hz allow fair preference testing

Evidence

It is worthwhile to note that at the time of the registration of the music, the tuning standard was around 432 Hz. Therefore, in the psychoacoustic experiments, optimal conditions to check the hypothesis of the music lovers were realized. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 2051

Categorization

• SEED: A nice methodological detail — old recordings were naturally at 432 Hz, making them ideal test material; could feed into the debunking essay angle.