Device and a method for determining a component signal with high accuracy

US8605910B2 · kind B2 · utility

Assignee

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

Inventors

• Andreas Franck · Ilmenau, DE
• Sandra Brix · Ilmenau, DE
• Thomas Sporer · Ergolding, DE

Key dates

• Filing date: May 10, 2013
• Grant date: Dec 10, 2013
• Expiry date: May 10, 2033

Classification

• Technology area (CPC H): Electricity
• CPC primary: H04S2420/13
• WIPO field: Audio-visual technology
• WIPO sector: Electrical engineering

Abstract

A device for determining a component signal for a WFS system includes a provider for providing WFS parameters, a WFS parameter interpolator, and an audio signal processor. The provider provides WFS parameters for a component signal while using a source position and while using the loudspeaker position at a parameter sampling frequency smaller than the audio sampling frequency. The WFS parameter interpolator interpolates the WFS parameters so as to produce interpolated WFS parameters which are present at a parameter interpolation frequency that is higher than the parameter sampling frequency, the interpolated WFS parameters having interpolated fractions which have a higher level of accuracy than is specified by the audio sampling frequency. The audio signal processor is configured to apply the interpolated fractional values to the audio signal such that the component signal is obtained in a state of having been processed at the higher level of accuracy.