Automobile dsp power amplifier sound effect intelligent processing system

By combining a microphone array with a three-dimensional acoustic geometry model, real-time dynamic adjustment of the in-vehicle sound field is achieved, solving the consistency problem in traditional sound effect adjustment technology, improving the balance and fidelity of in-vehicle sound effects, and enhancing the passenger's auditory experience.

CN119996899BActive Publication Date: 2026-03-31SHENZHEN RAYTHEON AUDIO CO LTD
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Patent Information

Application Number
CN202510074052.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-01-17
Publication Date
2026-03-31
Estimated Expiration
2045-01-17

AI Technical Summary

Technical Problem

Traditional DSP sound effect adjustment technology has difficulty in sensing changes in the sound field characteristics of the in-vehicle space caused by seat adjustment or passenger movement in real time, resulting in sound effect inconsistency problems in different locations. In addition, it lacks intelligent adjustment capabilities and cannot provide accurate compensation strategies based on real-time sound field distribution, which affects the driving experience.

Method used

Acoustic data is acquired in real time using a microphone array. A three-dimensional acoustic geometric model is constructed by combining ray tracing and image source methods. Sound field consistency adjustment coefficients are generated through frequency band division and gain fluctuation analysis. A directional beamforming filter is designed to adjust the amplitude and phase of each channel to form a directional sound beam pointing towards the target sound source and suppress noise interference from non-target directions.

Benefits of technology

It significantly improves the balance and fidelity of in-vehicle sound effects, enhances the passenger's auditory experience and satisfaction, and dynamically adapts to changes in the in-vehicle acoustic environment.

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Abstract

The application discloses a car DSP power amplifier sound effect intelligent processing system and particularly relates to the field of vehicle audio system optimization, which is used for solving the problems of sound effect consistency and intelligent adaptation under a dynamic sound field, and is characterized in that acoustic data are collected in real time through a microphone array, a three-dimensional acoustic geometric model is constructed by combining ray tracing and image source method, and sound wave propagation paths and dynamic changes are accurately captured; through frequency band division of low-frequency, medium-frequency and high-frequency signals, the spectral distribution difference and gain fluctuation center of each seat are evaluated, a sound field consistency adjustment coefficient is generated, and the design and optimization of a directional beam forming filter are guided, the amplitudes and phases of each sound channel are adjusted, a directional sound beam is formed, and noise interference is suppressed; and the car DSP power amplifier sound effect intelligent processing system can further dynamically adapt to changes in the acoustic environment in the car, improve sound effect balance and high fidelity, and enhance the auditory experience and satisfaction of passengers.
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