响度分析仪和归一化器
检查 EBU R128 和其他标准
使用该工具可验证您的音频混音是否符合特定标准。该工具会根据上传的文件生成响度报告。它还能对音频文件进行规范化处理，使其符合您选择的标准。
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响度标准
LUFS（相对于满刻度的响度单位）用于测量音频内容的响度。不同的传输格式有多种标准和数值。下表对此进行了概述。
| Platform | LUFS (Integrated Loudness) | True Peak (dBTP) | Loudness Range (LRA) |
|---|---|---|---|
| Streaming (e.g., Spotify) | -14 LUFS | -1 dBTP | 7-10 LU |
| YouTube & Vimeo | -14 LUFS | -1 dBTP | 6-8 LU |
| TV Broadcast (US, ATSC A/85) | -24 LUFS | -2 dBTP | 4-7 LU |
| TV Broadcast (EU, EBU R 128) | -23 LUFS | -1 dBTP | 5-10 LU |
| TV Advertising | -24 to -20 LUFS | -2 dBTP | 4-7 LU |
| Online Content (General) | -16 to -14 LUFS | -1 dBTP | 6-8 LU |
| Mobile | -16 LUFS | -1 dBTP | 6-8 LU |
| VOD (Video on Demand, e.g. Netflix) | -24 LUFS | -2 dBTP | 5-10 LU |
| Cinema | -27 to -24 LUFS | -3 to -6 dBTP | 15-20 LU |
| Podcasts | -16 LUFS | -1 dBTP | 6-8 LU |
| DVD/Blu-ray | -27 LUFS | -3 dBTP | 10-15 LU |
| Radio | -16 LUFS | -1 dBTP | 6-10 LU |
TV Broadcast
U.S. TV follows the ATSC A/85 standard and targets -24 LUFS, while Europe follows EBU R 128 and targets -23 LUFS, both with a true peak of -1 to -2 dBTP to prevent distortion and ensure broadcast quality.
Cinema
Cinema audio typically has a much wider dynamic range, allowing for very quiet moments and very loud moments. Still, true peak levels should not exceed -3 dBTP to -6 dBTP.
YouTube and other Video Platforms
Similar to streaming platforms, these platforms also aim for -14 LUFS for consistency and to avoid drastic changes in volume from one video to the next.
Streaming
To ensure consistency across content types, streaming platforms such as Spotify have standardized on -14 LUFS.
TV Commercials
TV commercials are typically louder than regular TV content to attract attention, often falling between -24 and -20 LUFS.
VOD
Video-on-demand services closely follow broadcast TV standards, typically around -24 LUFS with a similar true peak.
Podcasts
Podcasts are targeted at -16 LUFS for clear and consistent playback across devices. This is similar to mobile content.
DVD/Blu-ray
Physical media such as DVDs and Blu-rays target -27 LUFS to maintain high dynamic range and theater-like audio quality.
Radio
Radio broadcasts typically aim for -16 LUFS to ensure clear audio in various listening environments and signal strengths.
容忍度
在欧洲，EBU R128 允许的容差为±1 LU，这意味着目标值上下最多 1 LUFS 的偏差是可以接受的。在美国，根据 ATSC A/85 标准，容差为±2 LUFS。对于电影制作，没有固定的 LUFS 目标值，但典型的响度可能在 -27 和 -24 LUFS 之间。Spotify 的目标响度为 -14 LUFS，没有明确的容差，但偏差较大的内容通常会自动调整。YouTube 的目标响度也是 -14 LUFS，超过此值的内容会自动调整。
具体的容差可能取决于服务或平台的政策，但一般来说，应满足目标值，以确保最佳音频质量和一致性。
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如果您需要分析或规范化更长的文件、更多的文件或不同的格式，则需要专业版账户。这样您还可以获得优先处理权，并使用许多其他工具和功能。
Check out all Pro Features| Free | Pro Users |
|---|---|
| Files up to 60 minutes | No length limit |
| up to 5 files a day | No daily upload limit |
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| .mp3, .wav, .m4a, .acc | .mp4, .mp3, .wav, .m4a, .acc, .wma, .aiff, .ogg, .flac |
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