html5-audio

How can I reduce the noise of a microphone input with the Web Audio API?

由 落爺英雄遲暮 提交于 2021-01-21 04:26:18
问题 I've been playing around with the Web Audio API and using my laptop's microphone as an input source. I can hear a lot of white noise when I listen to the input though; how can I create a filter to reduce the noise so that the sound is clearer? Are there any libraries that provide a pre-written noise filter for this situation? 回答1: '`m working on some POC and reduced laptop "life noses" with a BiquadFilter. I have also use a compressor but you don't have to )) (function(){ var filter,

How do I use the WebAudio API channel splitter for adjusting the Left or Right gain on an audio track?

由 不打扰是莪最后的温柔 提交于 2021-01-07 06:31:24
问题 <body> <audio id="myAudio" src="audio/Squirrel Nut Zippers - Trou Macacq.mp3"></audio> </body> <script> var myAudio = document.getElementById('myAudio') var context = new AudioContext(); var audioSource = context.createMediaElementSource(myAudio) var splitter = context.createChannelSplitter(2); audioSource.connect(splitter); var merger = context.createChannelMerger(2) //REDUCE VOLUME OF LEFT CHANNEL ONLY var gainNode = context.createGain(); gainNode.gain.setValueAtTime(0.5, context

How to avoid chrome autoplay policy on JS code?

由 巧了我就是萌 提交于 2021-01-05 12:04:58
问题 I'm building a game to help kids to learn alphabets, the game is simple it will pronounce the letter and the user should choose the right letter between 3 different choices the problem is that I can't autoplay the letter's audio file because of chrome autoplay policy which blocks autoplayed audio/video to avoid adds one of the ways I found on google is inserting an audio/video tag on the HTML with fixed src, but that didn't work for me because audio's path would change with each new round the

How to avoid chrome autoplay policy on JS code?

由 牧云@^-^@ 提交于 2021-01-05 12:02:47
问题 I'm building a game to help kids to learn alphabets, the game is simple it will pronounce the letter and the user should choose the right letter between 3 different choices the problem is that I can't autoplay the letter's audio file because of chrome autoplay policy which blocks autoplayed audio/video to avoid adds one of the ways I found on google is inserting an audio/video tag on the HTML with fixed src, but that didn't work for me because audio's path would change with each new round the

Joining multiple audio files into a single audio file in client side

由 独自空忆成欢 提交于 2020-12-26 03:20:02
问题 We are building a exercise app using ionic framework, which need to play multiple audio files in sequence with specific interval between each audio file. We got this working. Now we need to join the audio files into a single file. Example: File_1 (4 mins in length), File_2 (3 mins in length). We need a new combined single audio file which should be of 10 mins length (File_1 + 3 mins silence + File_2) Is there way to get this in a client side mobile application using angular or cordova? 回答1:

How to generate HTML5 video volume level chart?

由 别等时光非礼了梦想. 提交于 2020-12-06 11:50:31
问题 Given a plain web video of say 30s: <video src="my-video.mp4"></video> How could I generate its volume level chart? volume| level| ****** | * * ** | * * * ** |** * *** * | ** * * * * +---------------*-*-----************------+--- time 0 30s video is and quiet loud here here Note: Plain JavaScript, please. No libraries. 回答1: There are several ways to do this depending on what the usage is. For accuracy you could measure in conventional volumes and units such as RMS, LUFS/LKFS (K-weighted,
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