one-line version of my question: How can I record lossless ( or at the least, incredibly high quality ) audio in a web browser? Preferably chrome/chromium since I would like to make a high quality audio-recording electron application.

Note, this question was asked 8 years ago, but I'm trying to find a modern 2022 solution: High Quality Audio Recording in Web Browser

I have tried using getUserMedia() to record audio in javascript, even specifying audio quality variables like so:

    var constraints = {
        audio: true,
        "mandatory": {
            //sampleSize: 32,
            //sampleRate
            channelCount: 2,
            //autoGainControl: false,
            //noiseSuppression: false,
            //echoCancellation: false,
            "googEchoCancellation": "false",
            "googAutoGainControl": "false",
            "googNoiseSuppression": "false",
            "googHighpassFilter": "false"
        },
        video: false
    };

This code is in my repo: https://github.com/MartinBarker/simple-web-audio-recorder-demo The audio recording works but comes out still very low quality: windows file browser says the saved wav file is 705kbps, Spek shows it as being 16bit, 1411kbps, 44100Hz, 1 channel, and the file sounds awful.

Compare that to audacity, recording using the same microphone on the same computer, I can output a wav file that is signed 32 bit, with windows saying it has a bitrate of 2822kbps, and Spek showing a 32bit, 2822kbps, 44100hz, 2channel file which sounds great.

I am trying to record a wav file in my chrome browser with similar quality to audacity, is this even possible? Are there any other web libraries which could help me reach this goal?