HTML5 Audio

HTML5 Audio is a subject of the HTML5 specification, investigating audio input, playback, synthesis, as well as speech to text in the browser - wikipedia

There are a number of interesting options that can be used with the audio tag - developer.mozilla.org

You can't control the buffering of an audio tag. The buffering and delay is dependent on implementation, and is more complicated than a single setting as there are buffers along every step of the chain - stackoverflow

If latency matters for your application, I suggest implementing a WebRTC client which is built for low-latency.

If you need even more control, you can receive audio data over web sockets and playback with the Web Audio API, but this requires you to manage the buffering yourself and makes codecs tricky, for likely no improvement over WebRTC.

The adoption of HTML5 audio, as with HTML5 video, has become polarized between proponents of free and patented formats. In 2007, the recommendation to use Vorbis was retracted from the specification by the W3C together with that to use Ogg Theora, citing the lack of a format accepted by all the major browser vendors.