Media
真峰值安全限制器
把母带限制到选定真峰值上限（-1、-2、-1.5 或 -0.3 dBTP），采用“测量-限制-验证”闭环：FFmpeg 前瞻限制器以样本间余量压到上限之下，再用 BS.1770 过采样电平表复测输出，直到真峰值确实落在目标以内。
file· 文件结果打开工具
快速开始
用三种语言从你的代码中调用此工具。
cURL
# 1) Request a presigned URL → returns { uploadUrl, storageKey }
curl -X POST 'https://api.elysiatools.com/api/upload/presign/audio-true-peak-safe-limiter' \
-H 'Content-Type: application/json' \
-d '{"filename":"audioFile.ext","contentType":"application/octet-stream","size":12345}'
# 2) PUT the file bytes directly to the presigned uploadUrl
curl -X PUT '<presigned uploadUrl>' \
--data-binary @/path/to/file.ext
# 3) Call the tool, passing the returned storageKey for each file field
curl -X POST 'https://api.elysiatools.com/zh/api/tools/audio-true-peak-safe-limiter' \
-F 'audioFile=uploads/2026/01/01/your-tool-1700000000000-abc123.ext' \
-F 'ceiling=streaming' \
-F 'customCeiling=-1' \
-F 'ispMargin=1' \
-F 'attackMs=5' \
-F 'releaseMs=50' \
-F 'outputFormat=wav-f32'