This article comes from:
Http://blog.csdn.net/jtlyr/article/details/5321884
Here are some other websites that introduce wav files, which are recorded below:
Https://ccrma.stanford.edu/courses/422/projects/WaveFormat/
Http://blog.csdn.net/zhihu008/article/details/7854529
There are many methods for compressing PCM audio files into ADPCM files (such as ms acm and SOx). This article mainly introduces the public algorithm (as shown below, if you need to
What is a WAV file.The WAV file directly reflects the size of a sound at each time point, for example, the following waveform:Take one point for 0.1 seconds each person. The obtained WAV file value is 0, 1,-, 1. Therefore, if we can directly add the data of many
Php converts a wav file into an image file and displays it on the page. Php: convert a wav file to an image file and display it on the page. This document describes how php converts a wav
Wave is the standard Windows file format used for recording. The file extension is "WAV" and the data format is PCM or compressed.
The WAV file format is a standard for Audio Digital Storage jointly developed by Microsoft and IBM. It adopts the riff
Wave is the standard Windows file format used for recording. The file extension is "WAV" and the data format is PCM or compressed.
The WAV file format is a standard for Audio Digital Storage jointly developed by Microsoft and IBM. It adopts the riff
Usually, how do you deal with sound files in the design of multimedia software? Use the API function sndPlaySound provided by Windows to implement WAV file playback? However, have you ever encountered this situation: when the WAV file is larger than the available memory, the sndPlaySound function can not play!!! So, ho
1. WAV Overview wav is A sound file format developed by Microsoft Corporation (Microsoft) that complies with the riff (Resource Interchange File format) files specification, The audio information resource for saving the Windows platform is widely supported by the Windows platform and its applications, which also suppo
"Popular" is said to be: "16-bit Delphi 1.0 and 32-bit Delphi2.0, 3.0 have provided the resourcesCompiler tool, where Delphi 1.0 resource compiler is called Brcc.exe,delphi 2.0 Resource CompilerCalled BRCC32.EXE to compile a 32-bit resource, all resource compilers provide only command-line versions.The Windows version is not available. Creating a resource typically takes the following steps:1) write. RC file .. The RC
WAV (waveform audio format) is a sound encoding format developed by Microsoft and IBM that complies with the riff (Resource Interchange File format) files specification for saving the audio information resources of the Windows platform. Widely supported by the Windows platform and its applications, it is also one of the specified specifications commonly used by its music enthusiasts. Because this audio form
Php converts a wav file into an image file and displays it on the page,
This example describes how php converts a wav file into an image file and displays it on the page. Share it with you for your reference. The specific analysis
This article describes the Java read WAV file (waveform file) and the method of drawing waveform diagram. Share to everyone for your reference. Specifically as follows:
Because a lot of netizens recently asked me about the waveform file reading and writing problems, in order to make everyone more convenient and let th
InitializationPlugin.DL_Speak.ini ("yxme64uttbjhv0r620180302005400")Get the pronunciation clerk that exists in the systemSS = Plugin.DL_Speak.GetLanguageMessageBox SSSet the pronunciation of the system voice library 0 1 2 3Plugin.DL_Speak.SetLanguage 0Set pronunciation speed +50Plugin.DL_Speak.Rate 50Read the custom textPlugin.DL_Speak.Speak ("But Tretfdgfd of Guangdong Province, a wide range of widely-held Guangdong province Guangdong province")Convert text to
Unit unit1; interfaceuses windows, messages, sysutils, variants, classes, graphics, controls, forms, dialogs, stdctrls; Type tform1 = Class (tform) button1: tbutton; button2: tbutton; procedure button1click (Sender: tobject); Procedure button2click (Sender: tobject); end; var form1: tform1; implementation {$ R *. DFM} uses mmsystem; // function for obtaining format information and waveform data from the specified WAV
This design idea: first open a normal WAV audio file, from the 44 bytes in front of the defined file header, remove the file header definition message, placed in a file header structure. Then open the ALSA audio driver, from the file
The format of the wave file in the wav file header: 00 h 4 char "riff" flag
04 H 4 long int file length
08 H 4 char "wave" flag
0ch 4 char "FMT" flag
10 H 4 transition byte (optional)
14 H 2 int format category (10 h is PCM sound data)
16 h, 2 int channels, 1 single channel, 2 dual channels
18 h 2 int sampling rate (nu
Write to WAV file
Wav files are in the format of Resource Exchange files (riff), including a number of naming blocks, including header information (such as audio sampling format) or data (such as the sample itself ). Windows 32 API provides functions such as opening and disabling the javasf file and searching for
value is the number of channels × the data bit value per sample/8. The playback software needs to process multiple bytes of data of this value at a time to adjust the value for the buffer zone.
22 h
2
The number of data digits of each sample, indicating the number of data digits of each sample in each channel. If multiple channels exist, the sample size is the same for each channel.
24 h
4
Char
DATA tag "data"
28 h
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