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
- Day 248/300 thoughts on how graduates find jobs
- Facebook AI & Oxford proposed a video transformer with "track attention" to perform SOTA in video action recognition tasks
- Introduction and underlying analysis of regular expressions
- MySQL5.72. MSI installation failed
- Pymongo gets a list of data
- 万丈高楼平地起,每个API皆根基
- How effective is the Chinese-English translation of international economic and trade contracts
- Lesson 7 tensorflow realizes convolutional neural network
- The internationalization of domestic games is inseparable from professional translation companies
- SAP SD发货流程中托盘的管理
猜你喜欢
生物医学本地化翻译服务
基于购买行为数据对超市顾客进行市场细分(RFM模型)
mysql的基础命令
LeetCode每日一题(971. Flip Binary Tree To Match Preorder Traversal)
电子书-CHM-上线CS
ROS学习_基础
Use shortcut LNK online CS
Pallet management in SAP SD delivery process
AI on the cloud makes earth science research easier
CS passed (cdn+ certificate) PowerShell online detailed version
随机推荐
金融德语翻译,北京专业的翻译公司
SQL Server Manager studio (SSMS) installation tutorial
Fedora/rehl installation semanage
UniPro甘特图“初体验”:关注细节背后的多场景探索
How do programmers remember code and programming language?
钓鱼&文件名反转&office远程模板
[ 英语 ] 语法重塑 之 英语学习的核心框架 —— 英语兔学习笔记(1)
Redis Foundation
Day 246/300 SSH connection prompt "remote host identification has changed!"
Pymongo gets a list of data
Attributeerror successfully resolved: can only use cat accessor with a ‘category‘ dtype
Bitcoinwin (BCW): 借贷平台Celsius隐瞒亏损3.5万枚ETH 或资不抵债
同事上了个厕所,我帮产品妹子轻松完成BI数据产品顺便得到奶茶奖励
Office doc add in - Online CS
What is the difference between int (1) and int (10)? Senior developers can't tell!
中英对照:You can do this. Best of luck祝你好运
CS certificate fingerprint modification
What are the characteristics of trademark translation and how to translate it?
CS通过(CDN+证书)powershell上线详细版
Biomedical English contract translation, characteristics of Vocabulary Translation