使用指南User Guide

1. 在顶部导航进入「混音台」，点击任意音色即加入并立即开播Open the Mixer and tap any sound to add it — playback starts instantly
2. 每条音轨可独立调音量、声像、三段均衡，支持静音 / 独奏 / 重命名 / 排序Each track has its own volume, pan, 3-band EQ, mute / solo / rename / reorder
3. 一键「生成分享链接」把混音发给朋友；「保存组合」把心爱配置留在本机Share the mix with one click, or save it locally as your own preset

主音量控制在 70~80%，叠加的每条音轨按"打底响、点缀轻"的原则配比：雨声、白噪类做底（60~80%），鸟鸣、风铃等点缀压到 20~45% 最耐听。Keep master at 70–80%. Bed layers (rain, noise) sit well at 60–80%, while accents like birds or chimes stay pleasant at 20–45%.

均衡面板内置三枚快捷预设：低频增强（雨声更厚）、人声清晰（咖啡馆、鸟鸣更突出）、柔化高频（压掉刺耳嘶声）。双击任意音量条可复位默认值。The EQ panel ships three quick presets: Bass boost, Vocal clarity and Soften highs. Double-click any volume bar to reset it.

误删音轨别慌——删除提示里有 6 秒「撤销」，音量、均衡、位次全部原样还原。Deleted a track by mistake? The toast offers a 6-second Undo that restores volume, EQ, name and position.

支持 5/15/30/45/60/90/120 分钟与 1~600 任意自定义时长；到点前 30 秒平滑淡出，不会惊醒你。剩余时间显示在标签页标题与吸底播放条上。醒来想接着睡？到点提示里一键「再睡 5 分钟」。Pick 5–120 minutes or any custom 1–600. The mix fades out over the last 30 seconds; remaining time shows in the tab title and mini bar. The finish toast offers one-tap "Snooze 5 min".

「渲染并下载 WAV」在浏览器本地离线渲染 16bit 无损音频，超过 30 分钟自动降采样率，全程不上传；「实时录制」把当前混音录成 webm。下载组合 JSON 可备份你的配置。Render WAV happens offline in your browser (16-bit PCM, sample rate drops past 30 min); live recording captures webm; JSON export backs up your mix.

浏览器地址栏右侧（或菜单里）选择「安装 365Lab 白噪音」即可作为应用全屏使用；听过的录音会被缓存，之后离线也能混。Use the browser install prompt to run the mixer as an app; heard recordings are cached for offline use.