当前位置:网站首页>librosa音频处理教程
librosa音频处理教程
2022-07-06 06:43:00 【andrew P】
语音特征提取: 看懂梅尔语谱图(Mel-spectrogram)、梅尔倒频系数(MFCCs)的原理_BeichenLiu.Polaris的博客-CSDN博客_梅尔谱图
1.librosa.core.load(path,sr)对音频进行重新采样
librosa.core.load — librosa 0.7.2 documentation
librosa .core。负载(路径, sr=22050,单声道=真,偏移量=0.0,持续时间=无, dtype =<class 'numpy.float32'>, res_type='kaiser_best') [资源]¶
将音频文件加载为浮点时间序列。
音频将自动重新采样到给定的速率(默认sr=22050)。
要保留文件的本机采样率,请使用sr=None。
2.librosa.stft(),短时傅里叶变换
librosa.core.stft — librosa 0.7.2 documentation
短时傅里叶变换 ( STFT )。[1](第 2 章)
STFT通过在短重叠窗口上计算离散傅里叶变换 (DFT) 来表示时频域中的信号。
此函数返回一个复值矩阵 D 使得
np.abs(D[f, t])是 帧t处频率 bin f的幅度,并且
np.angle(D[f, t])是频率 bin f 在帧t的相位。
整数t和f可以通过实用函数frames_to_sample和转换为物理单位fft_frequencies。
边栏推荐
- Attributeerror: can 't get attribute' sppf 'on < module' models. Common 'from' / home / yolov5 / Models / comm
- My seven years with NLP
- Day 246/300 ssh连接提示“REMOTE HOST IDENTIFICATION HAS CHANGED! ”
- Practical guidance for interface automation testing (Part I): what preparations should be made for interface automation
- Every API has its foundation when a building rises from the ground
- 前缀和数组系列
- The ECU of 21 Audi q5l 45tfsi brushes is upgraded to master special adjustment, and the horsepower is safely and stably increased to 305 horsepower
- 将ue4程序嵌入qt界面显示
- Windows Server 2016 standard installing Oracle
- 云服务器 AccessKey 密钥泄露利用
猜你喜欢
A method to measure the similarity of time series: from Euclidean distance to DTW and its variants
How to translate professional papers and write English abstracts better
端午节快乐Wish Dragon Boat Festival is happy
【每日一题】729. 我的日程安排表 I
mysql的基础命令
电子书-CHM-上线CS
ROS2安装及基础知识介绍
CS passed (cdn+ certificate) PowerShell online detailed version
Today's summer solstice
CS-证书指纹修改
随机推荐
The ECU of 21 Audi q5l 45tfsi brushes is upgraded to master special adjustment, and the horsepower is safely and stably increased to 305 horsepower
Classification des verbes reconstruits grammaticalement - - English Rabbit Learning notes (2)
Today's summer solstice
CS passed (cdn+ certificate) PowerShell online detailed version
SQL Server manager studio(SSMS)安装教程
[ 英语 ] 语法重塑 之 动词分类 —— 英语兔学习笔记(2)
Automated test environment configuration
AttributeError: Can‘t get attribute ‘SPPF‘ on <module ‘models.common‘ from ‘/home/yolov5/models/comm
Successfully solved typeerror: data type 'category' not understood
基于购买行为数据对超市顾客进行市场细分(RFM模型)
字幕翻译中翻英一分钟多少钱?
What is the difference between int (1) and int (10)? Senior developers can't tell!
18.多级页表与快表
Data security -- 13 -- data security lifecycle management
自动化测试环境配置
Tms320c665x + Xilinx artix7 DSP + FPGA high speed core board
Day 245/300 JS forEach 多层嵌套后数据无法更新到对象中
Bitcoinwin (BCW): the lending platform Celsius conceals losses of 35000 eth or insolvency
The registration password of day 239/300 is 8~14 alphanumeric and punctuation, and at least 2 checks are included
Redis Foundation