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Apparatus and method of determining an impulse response and apparatus and method of presenting an audio piece

An impulse response, audio signal technology, applied to electrical components, stereo systems, etc., can solve annoying problems

Inactive Publication Date: 2005-12-21
FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
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Problems solved by technology

However, while the noise cannot be immediately imitated by the audience, it is nonetheless annoying to many, and, when this method is applied repeatedly, the result will be that the audience will no longer listen as directed. not at the beginning of the performance, but after some time, that is, when they can safely assume that the impulsive decision of the performance space, which is understood to be annoying, has been completed

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  • Apparatus and method of determining an impulse response and apparatus and method of presenting an audio piece

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Embodiment Construction

[0039] figure 1 is a block circuit diagram showing an apparatus for determining an impulse response in an environment in which a loudspeaker 10 and a microphone 12 are located, wherein, for the impulse response determination, an audio signal is used to feed an incoming audio Signal input 14, moreover, a test signal is then used to feed into a test signal input 16, and, in order to determine the auditory psychological masking threshold (psychoacoustic masking threshold) of this audio signal 14, can use any known The auditory mental model 18, using an auditory psychological masking threshold calculated from the auditory mental model 18, can achieve spectral coloring (spectral coloring) 20 of the test signal fed at the input 16, therefore, in the At the output of the coloring means 20 a spectrally colored test signal is present which is fed to the means 22 for introducing the spectrally colored test signal into the audio signal 14 .

[0040] In order to continue the explained fu...

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Abstract

The invention relates to a device, which is provided for determining a pulse response in an environment, inside of which a loudspeaker (10) and a microphone (12) are placed, and which operates while using an audio signal. A device (20) for effecting the spectral coloring of a test signal, which is preferably a pseudo noise signal, operates while using a psychoacoustic masking threshold of the audio signal in order to obtain a colored test signal that is embedded in the audio signal in order to obtain a measurement signal that can be fed to the loudspeaker (10). A device (30, 32) for determining the pulse response preferably carries out a cross-correlation of a reaction signal, which is received from the environment via the microphone, and of the test signal or of the colored test signal. This enables a pulse response of an environment to be determined even while playing an audio piece in order to provide an optimal description of the environment for a wavefield synthesis.

Description

technical field [0001] The present invention is related to determining an impulse response, and to an audio piece present in an environment in which an impulse response is determined. Background technique [0002] The demand for new technologies and innovative products in the field of entertainment electronics is constantly increasing, and it is indispensable for the success of new multimedia systems to provide desirable functions, or capabilities, which can be achieved through the use of digital technology, and , in particular, computer technology, and an example of this is the application of an enhanced near-realistic audio-visual effect. However, in previous audio systems, a substantial shortcoming lies in the spatial sound weight of natural sounds. The quality of the production (spatial sound reproduction of natural), but also the quality of the actual environment. [0003] The method of multi-frequency loudspeaker reproduction of audio signals has been known and standa...

Claims

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Application Information

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IPC IPC(8): H04R29/00H04S7/00
CPCH04R29/007H04S7/30H04S2420/13
Inventor 汤玛斯·史波瑞尔克里斯蒂安·诺包尔
Owner FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
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