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 d

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

A device for determining an impulse response in an environment provided with a speaker (10) and a microphone (12) operates using an audio signal. The means (20) for spectrally coloring a test signal, preferably a pseudo-noise signal, operates using a psychoacoustic masking threshold of the audio signal to obtain a colored test signal, and embedded in the audio signal to obtain a test signal that can be fed to the loudspeaker (10). And, preferably, the means (30, 32) for calculating the impulse response can perform a cross-correlation of a response signal received from the environment via the microphone and the test signal, or the colored test signal, Thereby, the impulse response of an environment can also be determined during the presentation of an audio signal to provide an ideal description of the environment for a wave-scene 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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