1 research outputs found
Isolation performance metrics for personal sound zone reproduction systems
Two isolation performance metrics, Inter-Zone Isolation (IZI) and
Inter-Program Isolation (IPI), are introduced for evaluating Personal Sound
Zone (PSZ) systems. Compared to the commonly-used Acoustic Contrast metric, IZI
and IPI are generalized for multichannel audio, and quantify the isolation of
sound zones and of audio programs, respectively. The two metrics are shown to
be generally non-interchangeable and suitable for different scenarios, such as
generating dark zones (IZI) or minimizing audio-on-audio interference (IPI).
Furthermore, two examples with free-field simulations are presented and
demonstrate the applications of IZI and IPI in evaluating PSZ performance in
different rendering modes and PSZ robustness