Abstract: In an embodiment a method includes receiving, by an electronic device, an annotation request, wherein the annotation request is used to request to annotate a playing start-end time period of each text unit in a text corresponding to a target audio, and wherein a text unit is at least a character, a word, or an expression, obtaining, by the electronic device, the playing start-end time period of each text unit in the target audio based on a fundamental frequency of the target audio, obtaining, by the electronic device, an annotation file based on annotating the playing start-end time period of each text unit in the text based on the playing start-end time period of each text unit in the target audio and outputting, by the electronic device, the annotation file.

Abstract: The present invention discloses a message storage method, including: receiving a new message including message contents and service information; checking whether a seed message of the new message is stored, the seed message being a message with identical message contents to the new message; and creating an association relationship between the service information of the new message and the stored seed message, if a seed message of the new message is stored; and storing the received new message, if no seed message of the new message is stored.