Web 静音麦克风音频getUserMedia
两天来我一直在这件事上碰壁,我真的希望有人能帮上忙 我从这里获取了getUserMedia麦克风录音机的一些代码。我已经去掉了我不需要的组件——不知何故,在这个过程中,我成功地做到了这样,在生成的文件中没有音频通过 它看起来格式正确,但完全没有声音。我有0个错误要处理Web 静音麦克风音频getUserMedia,web,webrtc,web-deployment,microphone,getusermedia,Web,Webrtc,Web Deployment,Microphone,Getusermedia,两天来我一直在这件事上碰壁,我真的希望有人能帮上忙 我从这里获取了getUserMedia麦克风录音机的一些代码。我已经去掉了我不需要的组件——不知何故,在这个过程中,我成功地做到了这样,在生成的文件中没有音频通过 它看起来格式正确,但完全没有声音。我有0个错误要处理 // navigator.getUserMedia shim navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || n
// navigator.getUserMedia shim
navigator.getUserMedia = navigator.getUserMedia || navigator.webkitGetUserMedia || navigator.mozGetUserMedia || navigator.msGetUserMedia;
// URL shim
window.URL = window.URL || window.webkitURL;
// audio context + .createScriptProcessor shim
var audioContext = new AudioContext;
if (audioContext.createScriptProcessor == null) {
audioContext.createScriptProcessor = audioContext.createJavaScriptNode;
}
// selectors
var $microphone = $('#microphone');
var $cancel = $('#cancel');
var $recordingList = $('#recording-list');
var $timeDisplay = $('#time-display');
var $microphoneLevel = $('#microphone-level');
var microphone = undefined;
var input = audioContext.createGain();
var mixer = audioContext.createGain();
var microphoneLevel = audioContext.createGain();
microphoneLevel.gain.value = 0;
microphoneLevel.connect(mixer);
var processor = undefined;
var startTime = null;
var encoder = undefined;
// obtaining microphone input
$microphone.click(function() {
navigator.getUserMedia({ audio: true },
function(stream) {
microphone = audioContext.createMediaStreamSource(stream);
microphone.connect(microphoneLevel);
console.log(microphone);
},
function(error) {
window.alert("Could not get audio input");
});
});
// start/stop recording
$microphone.click(function() {
if (startTime != null) {
stopRecording(true);
} else {
startRecording();
}
});
// cancel recording (without saving)
$cancel.click(function() {
stopRecording(false);
});
// microphone level slider
$microphoneLevel.on('input', function() {
var level = $microphoneLevel[0].valueAsNumber / 100;
microphoneLevel.gain.value = level * level;
});
function startRecording() {
startTime = Date.now();
$microphone.html('Stop');
$cancel.removeClass("hidden");
startRecordingProcess();
}
function startRecordingProcess() {
processor = audioContext.createScriptProcessor(1024, 2, 2);
input.connect(processor);
processor.connect(audioContext.destination);
// wav encoder
encoder = new WavAudioEncoder(audioContext.sampleRate, 2);
processor.onaudioprocess = function(event) {
encoder.encode(getBuffers(event));
};
}
function getBuffers(event) {
var buffers = [];
for (var ch = 0; ch < 2; ++ch) {
buffers[ch] = event.inputBuffer.getChannelData(ch);
}
return buffers;
}
function stopRecording(finish) {
startTime = null;
$timeDisplay.html('00:00');
$microphone.html('<i class="start fa fa-microphone fa-5x" aria-hidden="true"></i>');
$cancel.addClass('hidden');
stopRecordingProcess(finish);
}
function stopRecordingProcess(finish) {
input.disconnect();
processor.disconnect();
if (finish) { // if microphone pressed
saveRecording(encoder.finish());
} else { // if cancel pressed
encoder.cancel();
}
}
function saveRecording(blob) {
var url = URL.createObjectURL(blob);
var html = "<p class='recording' recording='" + url + "'><a class='btn btn-default' href='" + url + "' download='recording.wav'>Save Recording</a></p>";
$recordingList.prepend($(html));
// once we have done all the processing, upload the file to beyond verbal
// uploadFile(blob);
}
// update the recording timer
function minuteSeconds(n) { return (n < 10 ? "0" : "") + n; }
function updateDateTime() {
if (startTime !== null) {
var sec = Math.floor((Date.now() - startTime) / 1000);
$timeDisplay.html(minuteSeconds(sec / 60 | 0) + ":" + minuteSeconds(sec % 60));
}
}
window.setInterval(updateDateTime, 200);
//navigator.getUserMedia垫片
navigator.getUserMedia=navigator.getUserMedia | | navigator.webkitGetUserMedia | | navigator.mozGetUserMedia | | navigator.msGetUserMedia;
//URL垫片
window.URL=window.URL | | window.webkitURL;
//音频上下文+.createScriptProcessor垫片
var audioContext=新的audioContext;
if(audioContext.createScriptProcessor==null){
audioContext.createScriptProcessor=audioContext.createJavaScriptNode;
}
//选择器
变量$micromic=$(“#micromic”);
var$cancel=$(“#cancel”);
var$recordingList=$(“#记录列表”);
var$timeDisplay=$(“#时间显示”);
变量$microphoneLevel=$(“#麦克风级别”);
var话筒=未定义;
var input=audioContext.createGain();
var mixer=audioContext.createGain();
var microphoneLevel=audioContext.createGain();
microphoneLevel.gain.value=0;
麦克风电平。连接(混音器);
var处理器=未定义;
var startTime=null;
var编码器=未定义;
//获取麦克风输入
$麦克风。单击(函数(){
getUserMedia({audio:true},
功能(流){
麦克风=audioContext.createMediaStreamSource(流);
麦克风。连接(麦克风级别);
控制台日志(麦克风);
},
函数(错误){
window.alert(“无法获取音频输入”);
});
});
//开始/停止录制
$麦克风。单击(函数(){
if(startTime!=null){
停止记录(真);
}否则{
startRecording();
}
});
//取消录制(不保存)
$cancel.单击(函数(){
停止录音(假);
});
//麦克风电平滑块
$microphoneLevel.on('input',function(){
变量级别=$microphoneLevel[0]。值为编号/100;
microphoneLevel.gain.value=电平*电平;
});
函数startRecording(){
startTime=Date.now();
$micromic.html('Stop');
$cancel.removeClass(“隐藏”);
startRecordingProcess();
}
函数startRecordingProcess(){
processor=audioContext.createScriptProcessor(1024,2,2);
输入连接(处理器);
processor.connect(audioContext.destination);
//wav编码器
编码器=新的WavAudioEncoder(audioContext.sampleRate,2);
processor.onaudioprocess=函数(事件){
encode(getBuffers(event));
};
}
函数getBuffers(事件){
var缓冲区=[];
对于(var ch=0;ch<2;++ch){
缓冲区[ch]=事件.inputBuffer.getChannelData(ch);
}
返回缓冲区;
}
功能停止录制(完成){
startTime=null;
$timeDisplay.html('00:00');
$micromic.html(“”);
$cancel.addClass('hidden');
停止记录过程(完成);
}
函数stopRecordingProcess(完成){
input.disconnect();
处理器。断开连接();
如果(完成){//如果按下麦克风
保存录制(encoder.finish());
}否则{//如果按取消键
encoder.cancel();
}
}
函数保存录制(blob){
var url=url.createObjectURL(blob);
var html=“”;
$recordingList.prepend($(html));
//完成所有处理后,将文件上载到beyond Verball
//上传文件(blob);
}
//更新录制计时器
函数分钟秒(n){return(n<10?:“)+n;}
函数updateDateTime(){
如果(开始时间!==null){
var sec=数学地板((Date.now()-startTime)/1000);
$timeDisplay.html(分钟秒(秒/60 | 0)+“:”+分钟秒(秒%60));
}
}
setInterval(updateDateTime,200);
如果有人以前遇到过这种情况,我真的很感激你能帮我解决
感谢大家抽出时间,祝您度过愉快的一天/一夜首先请与general检查您的麦克风。
如果工作正常,您可以尝试只将音频流和所需的mime类型传递给媒体录制器进行基本音频录制。
如果您想播放此webaudio上下文 Am怀疑microphoneLevel.gain.value=0存在问题代码> 将其更改为
microphoneLevel.gain.value=1//或2
gain=0
表示我们正在静音音频。
gain=1
默认音频电平增益=0.1-0.9
正在降低音量水平增益=高于1.1
增加音量
在控制台上打印级别值
// microphone level slider
$microphoneLevel.on('input', function() {
var level = $microphoneLevel[0].valueAsNumber / 100;
console.log('value: ' + $microphoneLevel[0].valueAsNumber + ' Level: ' + level);
microphoneLevel.gain.value = level * level; // if level is zero, then its silent
// its better if you have a predefined level values based slider position instead of multiplying it
});
看我的和