Data synchronization method and device, equipment and computer readable storage medium

Abstract

The invention discloses a data synchronization method and device, equipment and a computer readable storage medium. The method comprises the following steps: under the condition that the data volume in a sound card cache is greater than a first threshold for the first time, executing an operation of playing a sound signal by a sound card; when the sound card plays the sound signal, obtaining the current data volume in the cache; under the condition that the current data size is smaller than a second threshold value or larger than a third threshold value, determining the playing rate adjustmentamount of the sound card according to the difference value between the current data size and the historical data size and the time interval between the obtained current data size and the obtained historical data size, wherein the historical data volume is the data volume in the cache when the playing rate of the sound card is adjusted last time, and the first threshold value is greater than the second threshold value and less than the third threshold value; and adjusting the current playing rate of the sound card according to the playing rate adjustment amount.

Description

technical field [0001] The present invention relates to the field of acoustic technology, and more specifically, to a data synchronization method, a data synchronization device, an audio playback device, and a computer-readable storage medium. Background technique [0002] At present, when a user listens to a sound signal (such as music) through a device such as a computer, the device first decodes the audio file into an audio data stream, and then sends the audio data stream to the sound card (the sound card can be the sound card of the device, or it can be a the sound card of the audio device connected to the device). The sound card first stores the audio data stream sent by the device in its own cache, and then converts the audio data stream in the cache into a sound signal. Based on this, the listening of the sound signal is realized. [0003] However, since the device and the sound card work independently with their own clocks, and the operating system running on the ...

AI Technical Summary

Problems solved by technology

[0003] However, since the device and the sound card work independently under their own clocks, and the operating system running on the device is usually a non-real-time operating system, the clocks between the device and the sound card are usually not synchronized

This causes the device to decode the audio file into an audio data stream at a different rate than the sound card converts the audio data stream into a sound signal, which will affect the quality of the sound signal played by the sound card

[0004] Specifically, when the rate at which the device decodes an audio file into an audio data stream is greater than the rate at which the sound card converts the audio data stream into a sound signal, the audio data stream in the sound card buffer will overflow, resulting in the loss of part of the audio data stream, further causing the sound card to The sound signal played has noise, discontinuous playback, etc.

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