Intelligent vehicle-mounted sound system with built-in digital audio signal processing module and working method thereof

Abstract

The invention discloses an intelligent vehicle-mounted sound system with a built-in digital audio signal processing (DSP) module. The system comprises a vehicle-mounted sound host, an access cloud mechanism, a cloud DSP setting transaction server, an external power amplifier, a first speaker group, a second speaker group, an upper computer and a mobile phone. The vehicle-mounted sound host comprises a communication module, an operating system and audio decoding module, an interface module, a pre-power amplifier module, an external power amplifier connection interface, a DSP module, a radio module, an audio signal source interface, a Bluetooth module, an HMI module, an upper computer and mobile phone interface and an audio file library. The DSP module selects an input sound source and performs digital audio signal processing on the sound source, and comprises a multi-channel analog sound source input interface, a digital sound source input interface, a command and data interface, an analogue-to-digital conversion unit, a core audio signal processing unit, a digital-to-analog conversion unit, a sound effect and sound field setting storage unit, and a multi-channel analog audio signal output interface.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to the field of car audio systems, in particular to a car audio system whose car audio host includes a built-in digital audio signal processing module. Background technique [0002] Listening to music while driving a motor vehicle is the most common use case for a car audio system. A general car audio head unit either has no sound effect function or provides simple sound effect settings through a simple sound effect chip. By plugging in a professional Digital Audio Signal Processing (DSP) device, the purpose of professionally adjusting and optimizing the output sound field of the audio host can be achieved. However, an external digital sound field processing device means additional investment in equipment and installation for car owners, and it also takes up additional car space and requires a separate power supply. In addition, since it is not integrated with the car audio head unit, t...

AI Technical Summary

Problems solved by technology

However, the external digital sound field processing device means additional equipment and installation investment for car owners, and it also takes up additional car space and requires a separate power supply

In addition, since it is not integrated with the car audio head unit, the external DSP device can only obtain analog signals from the head unit as the input sound source, and often cannot set different input sound sources separately; at the same time, it cannot pass the HMI of the car head unit Set up the device

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