A Facility for Simulating Room Acoustics, Employing a High Density Hemispherical Array of Loudspeakers

Sound in occupied open-plan offices: Objective metrics with a review of historical perspectives

“…For all metrics besides N, the value reported is the average value of the two ears. MATLAB Ò code for these psychoacoustic models is available from [31].…”

Reliability and repeatability of ISO 3382-3 metrics based on repeated acoustic measurements in open-plan offices

“…The software used to generate, play, record, and analyze (in post-processing) the signals was AARAE, which is a MATLABhosted graphical user interface driven environment [4]. The measurement signal used was an exponentially swept sinusoid (50 Hz À 20 kHz) of 30 s duration.…”

“…The sinusoidal sweep recordings from microphones per measurement path were used to derive the SPL Speech metrics, i.e., D 2,S and L p,A,S,4,m . Modulation transfer functions (MTFs) used for calculating STI, and subsequently r D , used the male 4 octave-band weights and redundancy factors [8]. L p,A,B was calculated as described in ISO 3382-3, i.e., from octave-band SPLs that represented spatially averaged values for the microphones along a measurement path [1].…”

Cognitive performance in open-plan office acoustic simulations: Effects of room acoustics and semantics but not spatial separation of sound sources

“…While there is no consensus in terms of signal-based changing-state characterization, two metrics are included here for exploratory purposes: Fluctuation Strength (FS; [28,29,71,72]) and the Frequency Domain Correlation Coefficient (FDCC; [58,73,74]). FS (in vacil) is a psychoacoustic parameter that quantifies slower amplitude modulations in a signal (up to 20 Hz) and was calculated using [75] as implemented within [76]. In laboratory studies, FS has been shown to be useful in characterizing ISE [28,72] although not always [29], and to exhibit a negative relationship with increasing number of workstations in actual OPOs [3].…”