Octave-band averaging can blur perceptually noticeable absorption variations

Evidence

One could argue that third octave band measurements would be more appropriate psychoacoustically as the octave measurement will tend to blur variations within the octave, which might be perceptually noticeable. In many cases, because the absorption coefficient varies smoothly with frequency, octave measurements are suffi­ cient. However, especially when considering resonant structures, more reso­ lution would be helpful. — David Howard, Jamie Angus, coustics and Psychoacoustics, 1910

Categorization

• XREF: Connects to the reader’s adjacent interest in perceptual/psychoacoustic measurement resolution — same theme as third-octave vs octave tradeoffs in soundscape work. — connects to: Octave-band averaging can hide perceptually relevant acoustic variations; Broad filters and lost suppression increase masking and blur spectral contrasts.; Impaired frequency selectivity and lost suppression increase masking and reduce spectral contrasts — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 569 (+2 more)

Broader Connections

• Octave-band averaging can hide perceptually relevant acoustic variations #corroborates (1.00)
• Broad filters and lost suppression increase masking and blur spectral contrasts. #expands (0.75)
• Spatial averaging of measurements suppresses interference artifacts while preserving spectral information #complicates (0.74) — Toole, Floyd E, Sound reproduction- the acoustics and…, 1270
• Impaired frequency selectivity and lost suppression increase masking and reduce spectral contrasts #expands (0.72) — Jennifer Lentz, Psychoacoustics- Perception of Normal…, 569
• Auditory filter bandwidth scales nonlinearly with center frequency #qualifies (0.72)