Specially designed rooms can feel anechoic while retaining reverberation and stable stereo imaging.

Evidence

The experience of this room is that one is unaware of sound reflection from the walls: it sounds almost anechoic, yet it has reverberation! Stereo and multi-channel material played in this room has images that are stable over a wide listening area. — Toole, Floyd E, Sound reproduction- the acoustics and…, 1432 (#corroborates, via linked claim)

Clearly the level of the reverberant field is strongly affected by the level of average absorption. The first example would be typical of an extremely “dead” acoustic environment, as found in some studios, whereas the second is typical of an average living room. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1776 (#contradicts, via linked claim)

Categorization

• XREF: connects to: Professional control rooms range from reflection-free to fully diffusive designs that sound differently.; A room can sound anechoic and reverberant simultaneously — Toole, Floyd E, Sound reproduction- the acoustics and…, 1432; Reverberant fields supply most perceived loudness in normal rooms — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1776

Broader Connections

• A room can sound anechoic and reverberant simultaneously #corroborates (0.98) — Toole, Floyd E, Sound reproduction- the acoustics and…, 1432
• Reverberant fields supply most perceived loudness in normal rooms #contradicts (0.75) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1776