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An audio resampling method and device for a FreeRTOS single chip

A resampling, single-chip technology, applied in the Internet field, can solve the problems of increasing hardware costs, increasing hardware costs, causing huge expenses, etc., achieving a good experience and reducing design costs

Active Publication Date: 2019-05-28
AISPEECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] In the process of implementing this application, the inventor found that: this solution makes recording and playback separate, and can be performed simultaneously, can realize vad and wakeup functions, and correspondingly increases hardware costs. From the perspective of a large number of shipments, the hardware cost A slight increase will also cause huge expenses

Method used

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  • An audio resampling method and device for a FreeRTOS single chip
  • An audio resampling method and device for a FreeRTOS single chip
  • An audio resampling method and device for a FreeRTOS single chip

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Embodiment Construction

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0024] Please refer to figure 1 , which shows the flow chart of an embodiment of the audio resampling method for FreeRTOS single chip of the present application, the audio resampling method for FreeRTOS single chip of this embodiment can be applicable to terminals of embedded electronic products, such as Intelligent children's story machines, int...

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Abstract

The invention discloses an audio resampling method and device for a FreeRTOS single chip, and the method comprises the steps: carrying out the data preprocessing of left channel data and right channeldata, and generating single channel audio data; And resampling the single-channel audio data on the basis of a preset interpolation algorithm so as to simultaneously pick up and play the single-channel audio data on a single chip. According to the method and the device, on the embedded equipment with limited resources, while the audio quality is ensured, resampling can be completed in real time,the design cost of hardware is effectively reduced, the method and the device are suitable for embedded products with computing power and insufficient resources, and better experience is brought to users.

Description

technical field [0001] The invention belongs to the technical field of the Internet, in particular to an audio resampling method and device for a FreeRTOS single chip. Background technique [0002] In related technologies, in the embedded field, embedded real-time operating systems are being more and more widely used. The use of embedded real-time operating system (Embedded Real-time Operation System, RTOS) can make more reasonable and effective use of CPU resources, simplify the design of application software, shorten the system development time, and better ensure the real-time performance and reliability of the system . [0003] FreeRTOS is a mini real-time operating system kernel. As a lightweight operating system, its functions include: task management, time management, semaphore, message queue, memory management, recording function, software timer, coroutine, etc., which can basically meet the needs of smaller systems. [0004] Because RTOS needs to occupy certain sy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04S1/00G11C7/16G09B5/04
Inventor 张杰龙侯觉郭迪张栖银张树童雷玉雄刘强崔简张强牛坤
Owner AISPEECH CO LTD
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