A room’s reverberant field can vary by 14 dB across the audible frequency range.

Evidence

The room constant R is 18.75 m2, as calculated in Example 6.4. … Thus the reverberant field varies by 106.3 − 92.3 = 14 dB over the frequency range. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1817

Categorization

• DEFINE: The ‘room constant R’ is the acoustic figure of merit for a room’s absorption; the passage quantifies how much a real domestic room tints the reverberant field.
• XREF: Connects to the reader’s interest in how domestic listening spaces color what we hear — the same room that hosts the reader’s own music listening is itself an equalizer.