1 Raymond and Beverly Sackler Faculty of Exact Sciences, School of Physics and Astronomy, Tel-Aviv University, Tel-Aviv, Israel, Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA, United States, 3 Institute for Gravitation and the Cosmos, Pennsylvania State University, University Park, PA, United States, Department of Physics, Pennsylvania State Univer...

It is known that the dependence of the emission-line luminosity of a typical cloud in the AGN broad-line regions upon the incident flux of ionizing continuum can be nonlinear. We study how this nonlinearity should be taken into account in estimating the size of the BLR by means of the “reverberation” methods. We show that the BLR size estimates obtained by cross-correlation of emission-line and...

A primary challenge in acoustic modeling is computation of reverberation paths from sound sources fast enough for real-time auralization. This paper describes a beam tracing method based on precomputed spatial subdivision and “beam tree” data structures that enables real-time acoustic modeling and auralization for sound sources at fixed locations in interactive virtual environment applications....

Speech intelligibility is in general lower for older adults than young adults in reverberant environments such as train stations or airports. We aim at to make speech announcements intelligible in public spaces. Speech spoken in noise, i.e., noiseinduced speech, is usually more intelligible than speech spoken in a quiet environment for young people when they are heard in noise, a phenomenon cal...

Historically, two equations have been used for predicting reverberation times, Sabine and Eyring. A precise means is presented for determining Eyring absorption coefficients alpha(eyring) when the Sabine coefficients alpha(sabine) are known, and vice versa. Thus, either formula can be used provided the absorption coefficients for the Sabine formula are allowed to exceed 1.0. The Sabine formula ...

Reverberation time (RT) is an important parameter for room acoustics characterization, intelligibility and quality assessment of reverberant speech, and for dereverberation. Commonly, RT is estimated from the room impulse response (RIR). In practice, however, RIRs are often unavailable or continuously changing. As such, blind estimation of RT based only on the recorded reverberant signals is of...