PyDTMF 🔢🎵
纯 Python 实现的 DTMF/MF 双音多频信号检测库 — 零外部依赖。
使用 Goertzel 算法从 WAV 音频文件中检测 DTMF（双音多频）和 Bell MF（多频）拨号音。
功能特点
- ✅ DTMF 检测 — 数字 0-9、*、#、A、B、C、D
- ✅ Bell MF 检测 — 多频信令音检测
- ✅ 纯 Python — 无 C 扩展、无 NumPy，仅使用标准库
- ✅ WAV 支持 — 8/16/24/32 位 PCM，任意采样率
- ✅ 音频预处理 — 自动转单声道、去直流偏置、音量归一化、重采样至 8kHz
安装
pip install git+https://github.com/Moxin1044/PyDTMF.git
或者直接复制 PyDTMF/ 目录即可使用 — 无需安装。
使用方法
命令行
python -m PyDTMF recording.wav
python -m PyDTMF recording.wav --mf # 同时检测 MF 信号
python -m PyDTMF recording.wav --no-optimize # 跳过预处理
Python API
from PyDTMF import from_wav, detect, from_pcm
# 从 WAV 文件检测
dtmf, mf = detect("recording.wav")
print(f"DTMF: {dtmf}")
# 从 WAV 字节数据检测（例如从网络下载）
with open("recording.wav", "rb") as f:
dtmf, mf = from_wav(f.read())
# 从原始 PCM 采样数据检测
dtmf, mf = from_pcm(samples, sample_rate=44100, channels=1)
# 同时检测 MF 信号
dtmf, mf = from_pcm(samples, detect_mf_mode=True)
工作原理
- 解析 WAV 文件头 → 提取格式信息
- 转换为单声道、去除直流偏置、归一化音量
- 重采样至 8kHz（电话标准采样率）
- 使用 Goertzel 算法测量每个 DTMF 频率的能量
- 当两个主导频率（一个行频、一个列频）超过阈值时判定为有效数字
DTMF 频率表
| 1209 Hz | 1336 Hz | 1477 Hz | 1633 Hz | |
|---|---|---|---|---|
| 697 Hz | 1 | 2 | 3 | A |
| 770 Hz | 4 | 5 | 6 | B |
| 852 Hz | 7 | 8 | 9 | C |
| 941 Hz | * | 0 | # | D |
许可证
GNU General Public License v2.0。
1 maintainer
Metadata
1 maintainer
Release files for PyDTMF 1.0.0
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | Provenance | Actions |
|---|---|---|---|---|
| pydtmf-1.0.0.tar.gz | 8.1 kB | With provenance | Details for pydtmf-1.0.0.tar.gz |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Actions Reset |
|---|---|---|---|---|
| pydtmf-1.0.0-py3-none-any.whl | Python 3 | none | any | Details for pydtmf-1.0.0-py3-none-any.whl |
Total release size: 15.7 kB
Release files / pydtmf-1.0.0.tar.gz
| Download URL | pydtmf-1.0.0.tar.gz |
|---|---|
| Size | 8.1 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
320916ef7f3e446b5fc043577724c49bcb52271eb1115141974a1114cfadd0df
|
|
BLAKE2b-256 checksum How to use checksums |
7ef242a3b441969506939ba958a0c857d012fe5f012c4d2f31d49808133ee3e2
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/6.1.0 CPython/3.13.12
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Jun 30, 2026.
Transparency logRelease files / pydtmf-1.0.0-py3-none-any.whl
| Download URL | pydtmf-1.0.0-py3-none-any.whl |
|---|---|
| Size | 7.7 kB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
8e9c264ef9213a40e0ff12587a96316866bbfca7bef63ca063fbdc011694cbf2
|
|
BLAKE2b-256 checksum How to use checksums |
bc347a181fa449d04281d4c370d1ebbcf84cb50cf165c668bbe72263a1ebf9ef
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
Yes |
| Uploaded via |
twine/6.1.0 CPython/3.13.12
|
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Jun 30, 2026.
Transparency logSecurity for PyDTMF 1.0.0
Provenance
Provenance describes where a file came from. On PyPI, provenance is shared via attestations, which provide a verifiable record of the build or publishing details. View details, limitations and caveats.
Full provenance
All 2 files in this release have been uploaded with provenance metadata.
Attestation for pydtmf-1.0.0.tar.gz
PyPI Publish Attestation
PyPI verified that this artifact, at this checksum, originated from the publisher listed below.
Signed by GitHub Actions, verified by PyPI on Jun 30, 2026.
Transparency logA note on package security
PyPI is a repository for distributing packages, not a service for auditing them. While third-party security researchers and our staff do their best to detect and remove malicious packages, PyPI cannot guarantee the quality, security or suitability of any given package.
To learn more about protecting yourself from malicious actors, visit our package security documentation.
