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All 181 docs markdown files translated into 20 languages (apps/docs/<locale>/**). Companion to the i18n code PR; admin-merged because the file count exceeds GitHub's per-PR CI trigger limit. Validated by pnpm i18n:check (all surfaces, 0 stale/missing) and a clean all-locale docs build.
49 lines
1.4 KiB
Markdown
49 lines
1.4 KiB
Markdown
---
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description: "按固定的分贝增益增大或减小音频音量。"
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i18n_source_hash: b9bc1de2c9ef
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i18n_provenance: human
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i18n_output_hash: da87d398b6f3
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---
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# Volume Adjust {#volume-adjust}
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通过施加固定的分贝增益来增大或减小音频文件的音量。
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## API Endpoint {#api-endpoint}
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`POST /api/v1/tools/audio/volume-adjust`
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接受包含音频文件和 JSON `settings` 字段的 multipart 表单数据。
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## Parameters {#parameters}
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| Parameter | Type | Required | Default | Description |
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|-----------|------|----------|---------|-------------|
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| gainDb | number | No | `3` | 音量调整量（单位分贝，-30 到 30） |
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## Example Request {#example-request}
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```bash
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curl -X POST http://localhost:1349/api/v1/tools/audio/volume-adjust \
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-H "Authorization: Bearer si_your-api-key" \
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-F "file=@audio.mp3" \
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-F 'settings={"gainDb": 6}'
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```
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## Example Response {#example-response}
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```json
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{
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"jobId": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
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"downloadUrl": "/api/v1/download/a1b2c3d4-e5f6-7890-abcd-ef1234567890/audio.mp3",
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"originalSize": 4500000,
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"processedSize": 4500000
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}
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```
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## Notes {#notes}
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- 正值增大音量，负值减小音量。
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- 较大的正增益可能导致削波。可使用 normalize-audio 进行响度安全的电平调整。
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- 输出通常保留输入容器格式。AAC 输入会写成 M4A，不受支持的仅解码输入会回退为 MP3。
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