Spinorama measurement grew out of loudspeaker-room interaction studies

Evidence

With this evidence it was a short logical step to what has now come to be known as the spinorama, but it took several years for it to come to fruition. The intervening years were spent improving methods for accumulating subjective and objective data, gaining confidence, and ultimately proving the value of the measured data as a basis for predicting sound quality. — Toole, Floyd E, Sound reproduction- the acoustics and…, 191

Categorization

• DEFINE: Names the spinorama as the measurement format that grew from this research lineage, giving context to the term.
• XREF: Connects to modern loudspeaker reviews that publish spinorama plots; clarifies the historical derivation of that standard format.