They include dialogue, synchronous and asynchronous sound effects, and music.
它们包括对话、同步和异步的音效以及音乐。
2
Synchronoussound effects are those sounds which are synchronized or matched with what is viewed.
同步音效是指那些与观看内容同步或匹配的声音。
3
Other sound effects are used to suggest action or occurrences that are not seen in the image: such non-synchronoussound can be Used to expand the dimensions of what is seen.