The effects of wall diffusing elements on the perception of sound fields were investigated in 1:10 scale models and a recital hall. Acoustical measurements were carried out in both halls with and without diffusers. The front halves of both side walls in the recital hall were covered by plastic panels and/or absorptive materials. Then the impulse responses recorded in diffusive, reflective, and ...

The seat dip effect is a low-frequency attenuation affecting sound travelling at grazing incidence over seating in auditoria. It is caused by scattered sound from the seats interfering with sound travelling directly from the source on the stage. In outdoor noise control, the simple single noise barrier gives good attenuation at high frequencies, but is limited by diffraction at low frequencies....

Abstract In this study ticket prices to Swedish opera houses and symphony orchestra concerts are compared wages during the 1898–2019 period. Both have increased continuously. The same kind of policy objectives concerning social inclusion disadvantaged groups that were established in beginning twentieth century is still proclaimed. most favourable pricing policies for buyers used decades around ...