web-audio-api

问题 The WebAudio spec gives API calls for both two-channel L/R panning (StereoPannerNode) and panning in 3D space (PannerNode). Despite this, I can't find an approach that works on iOS. Regarding normal L/R panning, MDN says that the 2D audioContext.createStereoPanner() is not implemented in iOS. (Or on desktop Safari.) Maybe you could create one by directly calling the PannerNode constructor, but I'm doubtful that works, at least on iOS. AudioContext panning audio of playing media shows a way to

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,

来源： https://stackoverflow.com/questions/34934862/how-to-replay-an-audio-blob-in-javascript

来源： https://stackoverflow.com/questions/34934862/how-to-replay-an-audio-blob-in-javascript

来源： https://stackoverflow.com/questions/47352775/what-is-the-best-way-to-destroy-an-audionode

来源： https://stackoverflow.com/questions/20644328/using-channelsplitter-and-mergesplitter-nodes-in-web-audio-api

来源： https://stackoverflow.com/questions/46780836/play-streaming-audio-in-javascript

来源： https://stackoverflow.com/questions/46780836/play-streaming-audio-in-javascript

来源： https://stackoverflow.com/questions/40291462/changing-oscillator-frequency

问题 I've been trying to follow the steps in some tutorials for playback of a simple, encoded local wav or mp3 file with the web Audio API using a button. My code is the following (testAudioAPI.js): window.AudioContext = window.AudioContext || window.webkitAudioContext; var context = new AudioContext(); var myBuffer; clickme = document.getElementById('clickme'); clickme.addEventListener('click',clickHandler); var request = new XMLHttpRequest(); request.open('GET', 'WoodeBlock_SMan_B.wav', true);