librosa是处理音频库里的opencv,使用python脚本研究音频，先安装三方库librosa。
如下通过清华镜像源安装librosa；
pip install -i https://pypi.tuna.tsinghua.edu.cn/simple librosa
D:D00_Python3D00A2_python3.7.3install>pip install -i https://pypi.tuna.tsinghua.edu.cn/simple librosa
Looking in indexes: https://pypi.tuna.tsinghua.edu.cn/simple
Processing c:usersadministratorappdatalocalpipcachewheels6ed3477582e7e63ee9127f4773adeb8dcd8490771c063e2607354ba0librosa-0.7.2-py3-none-any.whl
Requirement already satisfied: numba>=0.43.0 in d:d00_python3d00a2_python3.7.3installlibsite-packages (from librosa) (0.50.0)
Requirement already satisfied: joblib>=0.12 in d:d00_python3d00a2_python3.7.3installlibsite-packages (from librosa) (0.15.1)
Requirement already satisfied: resampy>=0.2.2 in d:d00_python3d00a2_python3.7.3installlibsite-packages (from librosa) (0.2.2)
Requirement already satisfied: numpy>=1.15.0 in d:d00_python3d00a2_python3.7.3installlibsite-packages (from librosa) (1.18.5)
Requirement already satisfied: audioread>=2.0.0 in d:d00_python3d00a2_python3.7.3installlibsite-packages (from librosa) (2.1.8)
Requirement already satisfied: scipy>=1.0.0 in d:d00_python3d00a2_python3.7.3installlibsite-packages (from librosa) (1.4.1)
Requirement already satisfied: soundfile>=0.9.0 in d:d00_python3d00a2_python3.7.3installlibsite-packages (from librosa) (0.10.3.post1)
Requirement already satisfied: scikit-learn!=0.19.0,>=0.14.0 in d:d00_python3d00a2_python3.7.3installlibsite-packages (from librosa) (0.23.1)
Requirement already satisfied: six>=1.3 in d:d00_python3d00a2_python3.7.3installlibsite-packages (from librosa) (1.15.0)
Requirement already satisfied: decorator>=3.0.0 in d:d00_python3d00a2_python3.7.3installlibsite-packages (from librosa) (4.4.2)
Requirement already satisfied: setuptools in d:d00_python3d00a2_python3.7.3installlibsite-packages (from numba>=0.43.0->librosa) (47.1.1)
Requirement already satisfied: llvmlite<0.34,>=0.33.0.dev0 in d:d00_python3d00a2_python3.7.3installlibsite-packages (from numba>=0.43.0->librosa) (0.33.0)
Requirement already satisfied: cffi>=1.0 in d:d00_python3d00a2_python3.7.3installlibsite-packages (from soundfile>=0.9.0->librosa) (1.14.0)
Requirement already satisfied: threadpoolctl>=2.0.0 in d:d00_python3d00a2_python3.7.3installlibsite-packages (from scikit-learn!=0.19.0,>=0.14.0->librosa) (2.1.0)
Requirement already satisfied: pycparser in d:d00_python3d00a2_python3.7.3installlibsite-packages (from cffi>=1.0->soundfile>=0.9.0->librosa) (2.20)
Installing collected packages: librosa
Successfully installed librosa-0.7.2
D:D00_Python3D00A2_python3.7.3install>
pip list查看三方包：
D:D00_Python3D00A2_python3.7.3install>pip list PackageVersion -------------------- ------------ absl-py0.9.0 astor 0.8.1 audioread 2.1.8 cffi 1.14.0 decorator 4.4.2 defusedxml 0.6.0 gast 0.3.3 google-pasta 0.2.0 grpcio 1.29.0 h5py 2.10.0 importlib-metadata 1.6.1 joblib 0.15.1 Keras-Applications 1.0.8 Keras-Preprocessing 1.1.2 librosa0.7.2 llvmlite0.33.0 Markdown3.2.2 networkx2.2 numba 0.50.0 numpy 1.18.5 pip 20.1.1 protobuf3.12.2 pycparser 2.20 resampy0.2.2 scikit-learn 0.23.1 scipy 1.4.1 setuptools 47.1.1 six 1.15.0 SoundFile 0.10.3.post1 tensorboard 1.14.0 tensorflow 1.14.0 tensorflow-estimator 1.14.0 termcolor 1.1.0 threadpoolctl 2.1.0 Werkzeug1.0.1 wheel 0.34.2 wrapt 1.12.1 zipp 3.1.0 D:D00_Python3D00A2_python3.7.3install>
如上
librosa ---- 0.7.2
numba-----0.50.0
下面使用librosa，报的是numba的错误！
D:D00_Python3D00A2_python3.7.3install>python -c "import librosa" Traceback (most recent call last): File "", line 1, in File "D:D00_Python3D00A2_python3.7.3installlibsite-packageslibrosa__init__.py", line 12, in from . import core File "D:D00_Python3D00A2_python3.7.3installlibsite-packageslibrosacore__init__.py", line 125, in from .time_frequency import * # pylint: disable=wildcard-import File "D:D00_Python3D00A2_python3.7.3installlibsite-packageslibrosacoretime_frequency.py", line 11, in from ..util.exceptions import ParameterError File "D:D00_Python3D00A2_python3.7.3installlibsite-packageslibrosautil__init__.py", line 77, in from .utils import * # pylint: disable=wildcard-import File "D:D00_Python3D00A2_python3.7.3installlibsite-packageslibrosautilutils.py", line 15, in from .decorators import deprecated File "D:D00_Python3D00A2_python3.7.3installlibsite-packageslibrosautildecorators.py", line 9, in from numba.decorators import jit as optional_jit ModuleNotFoundError: No module named 'numba.decorators' D:D00_Python3D00A2_python3.7.3install>
解决办法：
卸载numba后，重新安装降版本的numba，安装numba==0.48.0
pip uninstall numba
pip install -i https://pypi.tuna.tsinghua.edu.cn/simple numba==0.48.0
python -c "import librosa;print(librosa.__version__) "
可以看到成功安装了正确可使用的librosa库！
D:D00_Python3D00A2_python3.7.3install>pip uninstall numba Found existing installation: numba 0.50.0 Uninstalling numba-0.50.0: Would remove: d:d00_python3d00a2_python3.7.3installlibsite-packagesnumba-0.50.0.dist-info* d:d00_python3d00a2_python3.7.3installlibsite-packagesnumba* d:d00_python3d00a2_python3.7.3installscriptsnumba d:d00_python3d00a2_python3.7.3installscriptspycc Proceed (y/n)? y Successfully uninstalled numba-0.50.0 D:D00_Python3D00A2_python3.7.3install>pip install -i https://pypi.tuna.tsinghua.edu.cn/simple numba==0.48.0 Looking in indexes: https://pypi.tuna.tsinghua.edu.cn/simple Collecting numba==0.48.0 Downloading https://pypi.tuna.tsinghua.edu.cn/packages/f5/ca/9e47464d388c3372454639d1739fa21605862c8815d53279e1216b5694e1/numba-0.48.0-cp37-cp37m-win_amd64.whl (2.1 MB)|█████████████████████████████▌ | 1.9 MB 2.2 MB/s eta 0:00:01 |██████████████████████████████ | 2.0 MB 2.2 MB/s eta 0:00:01 |██████████████████████████████▌ | 2.0 MB 2.2 MB/s eta 0:00:0 |███████████████████████████████ | 2.0 MB 2.2 MB/s eta 0:00:0 |███████████████████████████████▌| 2.1 MB 2.2 MB/s eta 0:00: |████████████████████████████████| 2.1 MB 2.2 MB/s Requirement already satisfied: setuptools in d:d00_python3d00a2_python3.7.3installlibsite-packages (from numba==0.48.0) (47.1.1) Requirement already satisfied: numpy>=1.15 in d:d00_python3d00a2_python3.7.3installlibsite-packages (from numba==0.48.0) (1.18.5) Collecting llvmlite<0.32.0,>=0.31.0dev0 Downloading https://pypi.tuna.tsinghua.edu.cn/packages/1d/83/cd2843726a6316e372822e9e42cd0083b6d1d98d89d53880e7e67d5eec68/llvmlite-0.31.0-cp37-cp37m-win_amd64.whl (13.6 MB) ████████████████████████████▌ | 12.1 MB 3.3 MB/s eta 0:00:01 |█████████████████████████████ | 12.5 MB 3.3 MB/s eta 0:00:01 |██████████████████████████████ | 12.9 MB 3.3 MB/s eta 0:00:0 |██████████████████████████████▌ | 13.1 MB 3.3 MB/s eta 0:00: |████████████████████████████████| 13.6 MB 434 kB/s Installing collected packages: llvmlite, numba Attempting uninstall: llvmlite Found existing installation: llvmlite 0.33.0 Uninstalling llvmlite-0.33.0: Successfully uninstalled llvmlite-0.33.0 Successfully installed llvmlite-0.31.0 numba-0.48.0 D:D00_Python3D00A2_python3.7.3install>python -c "import librosa;print(librosa.__version__) " 0.7.2
总结
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