First, the basic knowledge of digital audio
Fourier series:
The waveform of any period can be decomposed into several sine waves, the frequencies of which are integral times. The frequencies of other positive line waves in the series are integral times of the base frequencies. The base frequency is called first-level harmonics.
Pcm:
Pulse code modulation, pulse code modulation, that is, the waveform according to the fixed-cycle frequency sampling.
The original computer is Win8, and later upgraded to the Win10 family version, some applications (Sound Recorder, store, etc.), files can not be modified,Now it's time to solve the problem that the built-in administrator can't open this app1, press and hold the keyboard, windows+r, press, enter inside:regedit, enter, open Registry Editor2. In Registry Editor, nav
Win8 to open the system with the Sound Recorder program is as follows:
Method One: In the normal desktop, press the keyboard F3 key, type "recorder" and return search, and then click Select "Recorder."
Method Two: Use the combination hotkey "win+r" to bring up the running dialog box, enter "Soundrecorder"
Win7 System problem step recorder how to open?
The specific methods are as follows:
1, click the "Start" menu, in the search box input "Psr.exe";
2, in the search results click "Psr.exe" can run "problem step recorder";
3, click the "Start Record" button to start recording, at this time we have to reproduce the fault, in their own comp
Sometimes we use storm audio and video online to watch the movie, there will be no response, when clicking on the Storm Audio and video program interface, pop-up "Storm audio and video not responding" prompt window. For such cases, we can solve them by the following methods.
1, when the "Storm Audio and
Voice Command Data set address: http://download.tensorflow.org/data/speech_commands_v0.01.tar.gz
Audio Recognition Tutorial Address: https://www.tensorflow.org/versions/master/tutorials/audio_recognition
At Google, we are often asked how to use deep learning to solve speech recognition and other audio recognition problems, such as detecting keywords or commands. Although there are already many large
After work everyone likes to watch video to pass the time, many Win8 system users download the use of the Storm audio and video player to watch videos, with hundreds of kinds of TV dramas. Sometimes you turn on the storm. Video playback The problem that cannot play the next episode automatically, and the error code "40601" prompts, what to do? This problem is due to the Storm audio and video 5.57 0202.1111
Audacity is a free open source program for editing audio recordings. It can run on multiple platforms (Windows/linux). Audacity is a GUI-based, powerful program with a variety of options. It allows you to record various types of sounds. Displays a screen. You can display data in multiple parallel tracks, and you can cut, copy, and paste the time portion of the source data, and you can even add special effec
?? Next Tuesday launch of "Audio and video technology WEBRTC" Open class, Welcome to join!Open Course Links: http://edu.csdn.net/huiyiCourse/detail/90The course's explanatory material and code will be uploaded at the end of the Open class http://download.csdn.net/user/yangzhenpingThe following is the course information
Python uses wxPython to open an audio file and play it back,
This example describes how python can open an audio file and play it back through wxPython. Share it with you for your reference. The details are as follows:
The code snippet uses the wx. lib. filebrowsebutton. FileBrowseButton control to
WebRTC (Web Real time communication) is not Google's original technology, in 2010, Google bought about $68.2 million for VoIP softwareDeveloper Global IP Solutions Company, open source WEBRTC real-time communication project.Voice engine is the gips of voice communication, it is mainly through a series of transmission control to achieve low bandwidth transmission of real-time voice, Gips speech engine hasa wide range of guest users, such as Skype, QQ a
Project Address:Https://git.oschina.net/jthmath/xplayerThe compiled program:Http://pan.baidu.com/s/1eQxoHgAThe program is tested under Windows 8.1 64-bit. 32-bit is currently not supported.First, the Operation methodRun Xplayer.exe, select the menu "file", select "Open", select an audio file, you can hear the sound.At present, it is very humble, can only let you hear the sound, do nothing else.Second, what
Speex is an open-source CELP-based
Algorithm Audio codecs. This algorithm was made public as early as 1985, so there should be no licence problems. I believe that our friends who work on audio and VoIP must be very familiar with it. Speex has the following features:
(1) open-source software, free of charge-if you are
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