wav | 易学教程

ffmpeg - Making a Clean WAV file

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问题 I'm looking to batch convert a number of files to audio files using ffmpeg for a game called Star Wars: Jedi Knight: Dark Forces II . The problem I'm having is that ffmpeg seems to be doing something that does so that Jedi Knight can't play the sound file. Jedi Knight accepts plain old PCM WAV files of various ranges, from 5khz to 96khz, 8 and 16 bit, mono and stereo. This sounds plain and simple. Except for that if one were to create a WAV file using MS Sound Recorder , Jedi Knight could not

convert .caf file to .wav file with progress bar in ios

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问题 I record audio in .caf format and later need to convert it to .wav in order to upload the file as a dropbox. How can I convert the file to wav format in iOS? i don't want record audio directly .wav format how to Convert .CAF to .WAV file while conversion takes much more time i need to implement conversion progress bar 回答1: Try this -(void) convertToWav { // set up an AVAssetReader to read from the iPod Library NSString *cafFilePath=[[NSBundle mainBundle]pathForResource:@"test" ofType:@"caf"];

Concatenating 'audio/x-wav' buffer and serving with 'Transfer-Encoding': 'chunked'

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问题 This question is a followup to a previous question, that was resolved thanks to @thejh. I'm trying to convert text to audio and serve the data to the client as 'chunked' data. So far my headers look like so: res.writeHead(200, { 'Content-Type': 'audio/wav', // I tried 'audio/x-wav' as well 'Transfer-Encoding': 'chunked' }); And then I'm converting snippets of text to audio in a queue (which I get back as base64 encoded data), and serving them like so: var src = Base64Audio.replace("data:audio

How to convert WAV file to M4A?

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问题 Is there any way to convert my recorded .WAV file to .M4A file in iOS? And also I have to convert .M4A file to .WAV file. I tried with Audio Queue Services, but I am not able to do. 回答1: This post: From iPod Library to PCM Samples in Far Fewer Steps Than Were Previously Necessary describes how to load a file from the users ipod library and write it to the file system as a linear pcm (wav) file. I believe that the change that you will need to make to the code to load a file from the file

Generate wav tone in PHP

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问题 I would like to generate a sine tone in php. But constructing my wav I need to give the values in bytes. I don't know how to do that: Here is the code I have: $freqOfTone = 440; $sampleRate = 44100; $samplesCount = 80000; $amplitude = 0.25 * 32768; $w = 2 * pi() * $freqOfTone / $sampleRate; //$dataArray = new $text = "RIFF" ."80036" ."WAVE" ."fmt " ."16" ."1" ."1" ."44100" ."44100" ."1" ."8" ."data" ."80000"; for ($n = 0; $n < $samplesCount; $n++) { $text .= (int)($amplitude * sin($n * $w));

Play simultaneously sound in C#

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I want in the win Application (written in C#), the sound (Wav Format) play as Background Sound, and mouse over Control play small wav sound File, and when Click on Button, Stop Background Sound and ... . Thanks For your guidance. you can use Windows Media Player: reference C:\Windows\System32\wmp.dll in your project to launch a wav file: WMPLib.WindowsMediaPlayer wmp = new WMPLib.WindowsMediaPlayerClass(); wmp.URL = "[wav file path]"; //then control the player with : wmp.controls.play(), stop(), ... for the second wav file, do the same thing with another instance of WindowsMediaPlayer etc...

Audio file format issue in objective c

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I have written an audio WAV (have recorded my voice) file using AVAudioRecorder. The final file format is a WAV file. File was successfully saved and I can hear my voice. I want to send this file to a back End server (web-service). But my server accepting only data and FMT information in WAV . It is not accepting my wav file because of my wav file infromation with FLLR, data, FMT. I have checked my WAV file information in Riffpad tool. It's showing FLLR, data, FMT. But I want only data and fmt. Because my server side accepts only data and FMT. So please advice how to remove FLLR in my wav file

Getting 'UnsupportedFileException' when playing wav file from URL in Java

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I have to play a .wav file from URL but getting UnsupportedFileException . Below is the code. public class LoopSound { public static void main(String[] args) throws Exception { HostnameVerifier hv = new HostnameVerifier() { @Override public boolean verify(String urlHostName, SSLSession session) { System.out.println("Warning: URL Host: " + urlHostName + " vs. " + session.getPeerHost()); return true; } }; // Now you are telling the JRE to trust any https server. // If you know the URL that you are connecting to then this should // not be a problem try { trustAllHttpsCertificates(); } catch

Convert byte array to .wav java [duplicate]

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This question already has answers here : Convert audio stream to WAV byte array in Java without temp file (5 answers) Converting Byte Array to Wav file [duplicate] (1 answer) Closed 6 years ago . I have a web service that returns an array of bytes and my intention is to convert said array to a .wav in the client (a handheld such as Blackberry). However I really have no idea of how to do that, I tried just making an FileOutputStream but of course that wouldn't play. So I am once again without knowing what to do. Any ideas? So, there are LOTS of .WAV formats, here's some documentation: http://en

Best way to play wav files in the browser?

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问题 I have no choice but to play wav files directly in the browser (serverside encoding to mp3 isn't an option, unfortunately.) What's the best way to do this? I'd really like to take advantage of the HTML 5 audio tag but my target audience includes many, many teens using IE6. As far as I'm aware flash isn't an option, but speedy playback really is critical. Thanks. 回答1: Nowadays, the best way is probably just to use the HTML5 <audio> tag. In the past, you might have done it like this: Background