Device and method for generating a loudspeaker signal based on a randomly occurring audio source

A technology for speaker signals and audio signals, applied in the field of audio signal processing, can solve the problems of not creating rain sound, impossible to create particle positions, etc.
CN101199235AInactive Publication Date: 2008-06-11FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
Publication Date
2008-06-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

A particle generator for generating speaker signals for speaker channels in a multi-channel reproduction environment, comprising: a position generator (14) for providing a plurality of positions at which an audio source is to appear; and a time generator (18) , which provides the occurrence time for the audio source to occur, which is associated with the position. Additionally, a single impulse response generator (16) is provided for generating a single impulse response information for each of the plurality of locations. The combined impulse responses are formed by an impulse response combiner (20) for combining individual impulse response information according to time of occurrence. This overall impulse response is finally used to adjust the filter (21), and the audio signal is finally filtered by the filter (21).
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Description

technical field

[0001] The present invention relates to audio signal processing, and more particularly to audio signal processing in systems comprising multiple loudspeakers, such as wave field synthesis systems. Background technique

[0002] Figure 4 shows a typical wave field synthesis scenario. At the heart of the wave field synthesis system is a wave field synthesis renderer 400 that generates a specific loudspeaker signal for each of the individual loudspeakers 401 clustered around the reproduction environment. Specifically, between the wave field synthesis renderer 400 and each loudspeaker, there is a speaker channel through which the wave field synthesis renderer 400 transmits speaker signals for the respective loudspeakers. On the input side, the wave field synthesis renderer 400 is provided with control data typically set in a control file 402 . The control file may include a list of audio objects, each audio object having a virtual location and an audio signal as...

Claims

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