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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.

Inactive Publication Date: 2008-06-11
FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
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Problems solved by technology

[0010] The disadvantage of this concept is that, even with this concept, it is not possible to create any particle positions, but only stereo panning between two speakers adjacent to the impact position of the raindrop, using the direction about the listener
Also, doesn't create any ideal rain sound for the listener

Method used

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

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Embodiment Construction

[0030] Figure 1 shows a schematic diagram of the apparatus of the present invention for producing at output 10 a loudspeaker channel associated with a loudspeaker (for example 403) which may be installed at one of a plurality of loudspeaker positions in a reproduction environment. Speaker signal. In particular, the preferred embodiment of the inventive device shown in Fig. 1 comprises means 12 for providing audio signals of audio sources occurring at different positions and at different times in the audio scene. The device providing the audio signal is typically a storage medium in which is stored an audio signal representing eg: the sound of impacting raindrops or different particles, e.g. approaching or disappearing spaceships, a herd of horses / cows for space computer games The hooves of horses or cows etc. According to the invention, the audio signal of the audio source is permanently stored in a wave field synthesis renderer such as the renderer of FIG. 4 and thus does no...

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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).

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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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04S3/00
CPCH04S2420/13H04S3/00
Inventor 迈克尔·贝金格勒内·罗迪格斯特
Owner FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
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