System, method and device for realizing audio synthesis and real-time playing control of automobile instrument, processor and storage medium thereof

Abstract

The invention relates to a system for realizing audio synthesis and real-time playing control of an automobile instrument, and the system comprises: an audio file processing module which is used for preprocessing an audio file into periodic small fragments; an audio data extraction and storage module which is used for extracting a data stream of an audio file in the system and storing the data stream in a system memory; an audio alarm logic control module which is used for acquiring currently played audio data according to the received alarm signal; an audio data synthesis module which is used for performing audio synthesis processing on the audio file needing alarm control; and an audio playing control module which is used for writing the currently required audio data into the sound card buffer area. The invention further relates to a corresponding method and device, a processor and a storage medium thereof. By adopting the system, the method, the device, the processor and the storage medium of the invention, the idea of processing the original audio file into the periodic fragments and flexibly synthesizing the audio file can reduce the requirement of the automobile instrument on the size of the system flash.

Description

technical field [0001] The present invention relates to the fields of automotive electronics, audio processing and embedded Linux systems, in particular to the technical field of synthesis and processing of audio data, and specifically refers to a system, method, device, and processor for realizing audio synthesis and real-time playback control of automobile instruments and its computer storage media. Background technique [0002] With the development of automobile intelligence, many automobile instruments have supported the restoration of audio signals directly by analyzing audio files, and then drive speakers to realize sound alarms. However, the speed of the chip accessing the flash is relatively slow, and the storage space is limited, and the audio file can only store the audio clips required for the alarm, such as figure 1 , figure 2 As shown, if the traditional method is used for playback control, there will be the following problems: [0003] (1) It is necessary t...

AI Technical Summary

Problems solved by technology

However, the speed of the chip accessing the flash is relatively slow, and the storage space is limited, and the audio file can only store the audio clips required for the alarm, such as figure 1 , figure 2 As shown, if the traditional method is used for playback control, there will be the following problems:

[0003] (1) It is necessary to access the audio file in the flash every time the alarm sound is played, so there will be a certain delay between the instrument receiving the alarm signal and the instrument sending out the alarm sound, which will affect the real-time performance of the alarm

[0004] (2) When an audio clip or combination of audio clips needs to be continuously alarmed, it is necessary to repeatedly go through the steps of reading file header information, setting player attributes, reading file data stream, and writing file data stream to the sound card. , will waste system resources

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