Apparatus and method for determining a measure for a perceived level of reverberation, audio processor and method for processing a signal

US9672806B2 · kind B2 · utility

Assignee

• Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

• Christian Uhle · Nuremberg, DE
• Jouni Paulus · Nuremberg, DE
• Juergen Herre · Erlangen, DE
• Peter Prokein · Erlangen, DE
• Oliver Hellmuth · Erlangen, DE

Key dates

• Filing date: Aug 31, 2013
• Grant date: Jun 6, 2017
• Expiry date: Oct 3, 2034

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04S2420/07
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

An apparatus for determining a measure for a perceived level of reverberation in a mix signal consisting of a direct signal component and a reverberation signal component, has a loudness model processor having a perceptual filter stage for filtering the dry signal component the reverberation signal component or the mix signal, wherein the perceptual filter stage is configured for modeling an auditory perception mechanism of an entity to obtain a filtered direct signal, a filtered reverberation signal or a filtered mix signal. The apparatus furthermore has a loudness estimator for estimating a first loudness measure using the filtered direct signal and for estimating a second loudness measure using the filtered reverberation signal or the filtered mix signal, where the filtered mix signal is derived from a superposition of the direct signal component and the reverberation signal component. The apparatus furthermore has a combiner for combining the first and the second loudness measures to obtain a measure for the perceived level of reverberation.