Standardized listening rooms match domestic listening enough to validate psychoacoustic tests

Evidence

I had access throughout the decades to accurate, comprehensive anechoic measurements as well as controlled double-blind subjective evaluations of many loudspeakers using many listeners. These fulfilled the fundamental needs for productive psychoacoustic research, as described in Figure 1.1. Few people in the world have had this luxury. With these facilities at hand, psychoacoustic linkages and correlations appeared quickly and persuasively. Without them, workers have incomplete or unreliable data. The uncertainties and inconsistencies can lead to experimental errors, and opinions having more influence than they should. — Toole, Floyd E, Sound reproduction- the acoustics and…, 252 (#corroborates, via linked claim)

As discussed in earlier chapters, adaptation to the listening room is a factor in what we are able to hear in perceptions of loudspeaker sound quality. Below the transition/Schroeder frequency, resonances in small rooms have a massive influence on what we hear. They add timbral colorations and are the acoustic “signature” of a small room, not the large spaces we want to hear in recordings. There are also effects at higher frequencies, in the reflection of off-axis sounds related to loudspeaker directivity. Therefore, if comparing loudspeakers, listen to all of them in the same room, taking time to let the listeners adapt to the acoustical setting. Listeners have the ability to adapt to many aspects of room acoustics in multiple-loudspeaker listening comparisons, as long as there are no extreme problems. As shown in Sections 5.4 and 5.5, when comparisons are done in the same room, large differences in rooms make little difference to the relative sound quality ratings. Listeners appear to be able to normalize the effects of different rooms, at least up to a point. — Toole, Floyd E, Sound reproduction- the acoustics and…, 1098 (#corroborates, via linked claim)

Categorization

• corroborated: 2 independent passages support this claim
• XREF: connects to: Master recordings must be evaluated in reflective rooms to translate to consumer listening — Toole, Floyd E, Sound reproduction- the acoustics and…, 644; Normal domestic rooms (RT 0.3-0.5 s) are the right starting point for speech playback; Accurate anechoic data plus blind listening tests make psychoacoustic correlations emerge quickly — Toole, Floyd E, Sound reproduction- the acoustics and…, 252 (+4 more)

Broader Connections

• Measurable and audible sound qualities can be shown to correlate reliably #corroborates (0.85)
• Accurate anechoic data plus blind listening tests make psychoacoustic correlations emerge quickly #corroborates (0.82) — Toole, Floyd E, Sound reproduction- the acoustics and…, 252
• Listeners perceptually normalize familiar rooms to judge loudspeakers clearly #corroborates (0.80) — Toole, Floyd E, Sound reproduction- the acoustics and…, 1098
• Familiarity with a room enables partial perceptual normalization during listening #corroborates (0.78)
• Binaural headphone tests can replicate real-time loudspeaker listening #contradicts (0.75)