How do I layer background music under a voice clip?

如何在3SAX V3中为语音片段叠加背景音乐

Last updated: 2026-10-21

Direct answer

直接回答

Put the voice file in a Music Group (MG) audio clip, put the BGM clip in another MG slot, then place both clips on the audio layer (L4) of the Scheduler (AC) and adjust their start times and overlaps.

把语音文件放入音乐组（MG）的一个音频片段，把背景音乐放入另一个MG片段，再把两者放到调度器（AC）的音频层（L4），调整起始时间和重叠范围。

How to do it in 3SAX V3

在3SAX V3中的操作步骤

1. Open the MG panel. Upload the voice clip as one Clip ID and the BGM as a second Clip ID; fill in Duration and BPM for each.

1. 打开MG面板。上传语音为一个Clip ID，背景音乐为第二个Clip ID，分别填写Duration和BPM。

2. Open the AC Scheduler. Select the audio layer L4.

2. 打开AC调度器，选择音频层L4。

3. Drop the voice clip on L4 and drop the BGM clip on L4 so the two ranges overlap for the length of the voice.

3. 把语音片段放到L4，把背景音乐片段也放到L4，使两段范围在语音时长内重叠。

4. Drag the BGM start earlier or later on L4 until the timing lines up with the voice.

4. 在L4上拖动背景音乐的起点，直到与语音对齐。

5. Add the scene (L3), roles (L1) and camera (L2) events on their layers if you need visuals.

5. 如需画面，在对应层添加场景（L3）、角色（L1）和镜头（L2）事件。

6. Check the green/red input hints, then preview the timing in CANVAS.

6. 查看绿色/红色输入提示，在CANVAS中预览时间。

7. Export the scheduler codes. If you want to reuse the setup, save the schedule to LIBRARY and load it again in one click.

7. 导出调度器代码；需要复用时把调度保存到LIBRARY，一键重新加载。

What you CAN and CANNOT do

能做与不能做

CAN: upload any audio file as an MG clip; mix voice under BGM on L4; reuse the whole schedule from LIBRARY; render to MP4 (720x1280 or 1280x720).
CANNOT: the tool does not compose music and has no AI song generator. If you leave a required field empty or a duration missing, the hints turn red and the render fails at validation.
If you place the BGM on the wrong layer (L1/L2/L3) it will not play as audio.

能做：上传任意音频为MG片段；在L4上把语音叠在背景音乐下；从LIBRARY复用整个调度；渲染MP4（720x1280或1280x720）。
不能做：工具本身不作曲，没有AI歌曲生成器。必填项为空或缺少时长时，提示变红，渲染在验证阶段失败。
若把背景音乐放到错误的层（L1/L2/L3），它不会作为音频播放。

Try it in the 3SAX V3 creator tool.

欢迎在3SAX V3创作工具中试一试。