Method and device for realizing audio mixing of set-top box

Abstract

The invention provides a method and a device for realizing the audio mixing of a set-top box. The method comprises the following steps of: decoding a plurality of paths of audio code streams received by the set-top box into corresponding pulse code modulation (PCM) format data; and processing each path of decoded PCM format data, performing audio mixing on all the paths of processed PCM format data into one path, and outputting the path of data. According to the method and the device, the shortcomings of hardware implementation and low adaptability and portability of the conventional audio mixing of the set-top box can be overcome; and development cost can be decreased, and function development speed can be increased.

Description

technical field [0001] The present invention relates to the field of multimedia terminals, and more specifically, to a method and device for realizing sound mixing of a set-top box, so that the set-top box can adaptively adapt various audio types. Background technique [0002] With the development of multimedia technology, many media audio-visual and terminal devices have audio mixing functions, but due to differences in hardware platforms, they all rely on their own independent chips to achieve. [0003] As far as set-top boxes are concerned, different types of set-top boxes use the hardware platforms and technical solutions of different chip manufacturers, so audio and video related decoding and playback are all completed by their own chip hardware modules. For integrated development manufacturers, many playback Relevant functions require authorization certificates, that is, to develop a set-top box, you need to pay a certain fee to the chip manufacturer, such as h264, mpe...

AI Technical Summary

Problems solved by technology

This method relies on specific hardware, and chip manufacturers have always provided implementation solutions. Generally, there is no ready-made code that can be run directly. Every time an SDK (Software Development Kit, software development kit) version is upgraded, this function needs to be done from the beginning. Moreover, most of its audio mixing solutions cannot adapt to the intermixing of multiple audio formats. Therefore, the traditional STB audio mixing implementation has the disadvantages of high dependence on chip manufacturers, insufficient self-adaptation, and poor portability, which is not conducive to reducing the cost of STBs. and modular rapid development

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