Anechoic-data equalization differs sharply from room calibration, which is often misused

Evidence

Loudspeakers are getting better, and equalization based on the anechoic data can elevate many “good” loudspeakers into the “excellent” category. Some internet reviewers with anechoic measurement capability are providing accurate data, and advice for improving the neutrality of loudspeakers. This procedure should not be confused with the “room equalization/calibration” process and the features that exist in numerous consumer products. These are often misused but can offer limited benefits if properly managed. — Toole, Floyd E, Sound reproduction- the acoustics and…, 46

Categorization

• DEFINE: Draws a crucial distinction between speaker correction from anechoic data and room equalization/calibration — two confused technologies.
• QUESTION: What exactly separates anechoic-data speaker correction from room calibration? The mechanism of each is worth chasing in later chapters.