Media
DTMF 解码器
从任意录音中检测 DTMF 按键音并还原按键序列与时间戳。按 ITU-T Q.23/Q.24 用 Goertzel 滤波器组实现——逐键测量两个频率、扭曲与时长。
json· JSON 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-dtmf-decoder' \
-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-dtmf-decoder' \
-F 'audioFile=uploads/2026/01/01/your-tool-1700000000000-abc123.ext' \
-F 'minToneMs=40' \
-F 'strictness=standard' \
-F 'detectFourthColumn=true'