【文章标题】：StemDeck，一款免费、开源且本地的AI音轨分离工具
【文章正文】： Drop in an MP3, WAV, FLAC, OGG/Opus, MP4, or M4A file, or paste a YouTube URL, and StemDeck splits the audio into up to six stems (vocals, drums, bass, guitar, piano, other). Play them back in a DAW-style multitrack mixer: mute, solo, balance levels, zoom the waveform, loop a region, and export individual stems or a custom mix. Everything runs locally on your own machine. 拖入MP3、WAV、FLAC、OGG/Opus、MP4或M4A文件，或粘贴YouTube链接，StemDeck即可将音频分离为最多六种音轨（人声、鼓、贝斯、吉他、钢琴、其他）。通过DAW风格的多轨混音器进行回放：静音、独奏、平衡电平、波形缩放、片段循环，并导出独立音轨或自定义混音。所有操作都在你的本地设备上运行。
What is this? StemDeck is a stem separation tool, not a downloader. Its main job is processing audio you already own: drag an MP3, WAV, FLAC, OGG, or M4A onto the import bar and go. YouTube support is a convenience for content you have the right to process. StemDeck does not store, cache, or redistribute any downloaded content. Everything happens locally and nothing leaves your machine. 这是什么？StemDeck是音轨分离工具而非下载器。主要功能是处理你已拥有的音频：将MP3/WAV/FLAC/OGG/M4A拖到导入栏即可。YouTube支持仅适用于你有权处理的内容。StemDeck不会存储、缓存或重新分发任何下载内容。所有操作都在本地完成，数据绝不离开你的设备。
StemDeck is a free, open alternative to cloud stem-splitters like Moises and LALAL.AI: no account, no quota, no uploads, no subscription. If you want stems for personal study and prefer to keep things local and free, StemDeck has you covered. If you need the polish, a mobile app, or deeper musician tooling, the commercial products are a better fit. 作为Moises和LALAL.AI等云端音轨分离工具的免费开源替代品，StemDeck无需账户、不限次数、不上传、无订阅。若你希望本地化免费学习音轨分离，StemDeck是不二之选；若需要移动端应用或专业音乐工具，商业产品更合适。
StemDeck is free and does not accept any money, sponsorship, or funding from anyone listed below. I share these makers and artists and communities purely for the joy of pointing you toward wonderful people doing beautiful work. Go meet them ❤️ StemDeck完全免费且不接受下文所列任何人的资金赞助。推荐这些创作者/艺术家/社区纯粹出于分享美好的初心。快去认识他们吧❤️
| Name | What they do | Link |
|---|---|---|
| Analog4Lyfe | 全模拟音乐设备，拒绝数字捷径 | @analog4lyfe |
| r/bass | 我在Reddit最爱的贝斯社区 | r/Bass |
| Beltr | 将本地歌曲转为卡拉OK金曲，无需订阅/云端，仅需你和麦克风 | beltr.app |
| Dlima Guitars | 纯手工定制吉他/贝斯 | @dlimaguitars |
| Empress Effects | 为音色追求者打造的高端效果器 | empresseffects.com |
| Joao Gaspar | 制作人/影视配乐师，巡演/录音室乐手 | @jay_glaspar |
| Kris Luthier | 里斯本乐器修复师，精益求精 | @krisluthier |
| Lisbon Guitar Works | 里斯本手工吉他作坊 | dlimaguitars.com |
| More Notes Less Talk | 个性乐器设备，直录磁带无修饰 | @morenoteslesstalk |
| Seratone | 将任意电视变成专业卡拉OK舞台 | seratone.audio |
| slashCAM | 德语摄影器材测评，专注后期细节 | @slashcam.de |
| Thomann | 欧洲最大音乐设备零售商之一 | @thomann.music |
6-stem separation via Demucs htdemucs_6s, with auto-detection of the best Torch device (CUDA on NVIDIA, MPS on Apple Silicon, CPU fallback). 基于Demucs htdemucs_6s的六轨分离，自动选择最佳Torch设备（NVIDIA用CUDA/苹果芯片用MPS/CPU备用）。
YouTube and local file import. Paste a YouTube URL or drop an MP3, WAV, FLAC, OGG/Opus, MP4, or M4A directly onto the import bar. 支持YouTube及本地文件导入。粘贴链接或直接拖拽MP3/WAV/FLAC/OGG/Opus/MP4/M4A到导入栏。
DAW-style waveform editor with min/max sample rendering across all stems, shared normalization, zoom in/out/Fit, loop drag on the ruler, gold playhead overlay, and stem-aligned lanes. DAW风格波形编辑器：全音轨最小/最大采样渲染、统一标准化、缩放/适配、标尺循环拖拽、金色播放头覆盖、音轨对齐通道。
Stem subset extraction. Click stem chips to choose which stems to keep. Clicking from “all selected” snaps to “only this one”; subsequent clicks add or remove. 音轨子集提取。点击音轨标签选择保留内容。从”全选”点击切换为”仅当前”，再次点击增减选择。
“Original” backing track. When you pick a subset, a 7th lane contains the complement (full song minus selected stems), perfect for A/B reference without doubling. “原始”伴奏轨。选择子集时，第7通道自动生成补集（全曲减去所选音轨），便于AB对比无需重复处理。
Downloadable selected mix. A single mix.wav of just your selected stems, summed via ffmpeg amix. 可下载选定混音。通过ffmpeg amix生成仅含所选音轨的mix.wav文件。
Per-stem mixer with volume fader, mute, solo, and “monitor” (solo-only) per stem. State syncs between the preview mixer and the stems sidebar. 独立音轨混音器：音量推子、静音、独奏、“监听”（仅独奏）功能。预览混音器与侧边栏状态同步。
Live VU meters per stem. Post-gain RMS via Web Audio analysers with peak hold and slow falloff. 实时VU表显示。通过Web Audio分析器获取增益后RMS值，带峰值保持与缓慢衰减。
Song analysis including BPM (librosa beat tracker), key, scale, and confidence (Albrecht-Shanahan profiles), integrated LUFS (BS.1770), and sample peak in dBFS. 歌曲分析：BPM（librosa节拍追踪）、调性/音阶/置信度（Albrecht-Shanahan算法）、综合LUFS（BS.1770标准）、dBFS采样峰值。
Cancellable jobs. Cancel mid-pipeline and the runner terminates the active subprocess immediately, deletes the partial job dir, and returns to ready. 可取消任务。处理过程中取消会立即终止子进程，删除临时目录并返回就绪状态。
Library panel with folder-based track organisation, drag-and-drop, search, and trash. 资源库面板：支持文件夹分类、拖拽管理、搜索及回收站功能。
StemDeck is not trying to compete with commercial stem-separation products. It covers the core use case well and stops there. This table exists so you can make an informed choice rather than discover the gaps after the fact. StemDeck无意与商业音轨分离产品竞争，仅专注核心功能。下表助你做出知情选择而非事后发现局限：
| StemDeck | Moises / LALAL.AI / similar | |
|---|---|---|
| 价格 | 永久免费 | 免费增值；常规使用需订阅/点数 |
| 托管 | 完全本地运行 | 云端；需上传至服务器 |
| 账户/登录 | 无需 | 必需 |
| 网络需求 | 仅首次模型下载(~170MB)和YouTube下载 | 始终在线；无法离线使用 |
| 隐私 | 音频绝不离开本地设备 | 音频上传至第三方服务器处理 |
| 数据保留 | 用户完全控制 | 通常有服务条款约束 |