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Audio signal processing in a vehicle

An audio signal processing, audio signal technology, applied to the audio signal processing device of the vehicle, audio signal processing. In the field of estimation, it can solve problems such as underdetermined mathematics, increased computational complexity of algorithms, and mentioned costs.

Active Publication Date: 2018-07-31
VOLKSWAGEN AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] For the case of multiple audio source signals from multiple loudspeakers, besides the increased computational complexity of the algorithm, there is also the problem that the estimation problem is mathematically underdeveloped due to the interrelationships between the different audio source signals. fixed (unterbestimmt)
However, using a microphone array or multiple microphones comes at a cost, requires more installation space and requires powerful computing resources

Method used

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  • Audio signal processing in a vehicle
  • Audio signal processing in a vehicle
  • Audio signal processing in a vehicle

Examples

Experimental program
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Embodiment Construction

[0041] The present invention subsequently refers to Figure 1-3 be described in detail. exist figure 1 In the first part, the surrounding environment of the audio signal processing device 15 according to the invention in the vehicle 10 is described. exist figure 2 In , details of the audio signal processing device 15 are described in conjunction with other components of the vehicle 10 . image 3 Finally, the operating principle of the audio signal processing device 15 is shown schematically. The same reference numbers in the figures refer to the same or similar components.

[0042] figure 1 Vehicle 10 is shown in top view. Vehicle 10 includes a speech recognition system 11 . By means of the voice recognition system 11 , spoken instructions or commands of the occupants of the vehicle 10 can be detected, processed and carried out. For example, configuration settings of the vehicle 10 or a multimedia system of the vehicle 10 may be changed by corresponding commands. For...

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Abstract

The present invention relates to a method for audio signal processing in a vehicle (10). In order to allow simple and reliable echo cancellation for voice recognition during simultaneous reproductionof a multichannel audio source signal in a vehicle (10), a mono audio signal is generated on the basis of a multichannel audio source signal. The mono audio signal is limited to a frequency range between a prescribed lower frequency and a prescribed upper frequency, for example to a range from 100 Hz to 8 kHz. The limited mono audio signal is output via multiple loudspeakers (17-20) in the vehicle(10). An influence of the limited mono audio signal that is output via the multiple loudspeakers (17-20) on a voice audio signal received in the vehicle (10) via a microphone (13) is compensated forby means of the limited mono audio signal in an echo canceller (25).

Description

technical field [0001] The invention relates to a method for audio signal processing in a vehicle and a corresponding audio signal processing device for a vehicle. In particular, the invention relates to audio signal processing with echo compensation, eg for speech processing. Background technique [0002] In vehicles, such as passenger cars or trucks, voice conversation systems are used to assist the driver or passengers. Voice conversation systems are used, for example, to control electronic devices without the need for tactile control operations. Electronic devices may include, for example, a vehicle computer or multimedia system of the vehicle. Speech spoken by the driver or passenger is picked up via the hands-free microphone and fed to the speech recognition. [0003] The use of microphones in the vehicle interior, for example for voice-activated driving, telephony or vehicle interior communication, can potentially be compromised by the incoupling of sound from the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R3/02H04S7/00G10L21/02
CPCH04R3/02H04S7/307H04R2499/13H04S2400/05G10L2021/02161H04R2430/03G10L21/0208G10L2021/02082H04R5/04G10L21/0232G10L2021/02166H04R5/02
Inventor D.舍勒
Owner VOLKSWAGEN AG