Currently we have audio-samples port type for audio. This port type is a list of samples that make up the sample buffer.
This means every node that processes audio needs to read- and re-render an audio buffer.
This feature request is for an audio-object similar to 3d objects. That is to say there are no samples within the audio-object, only audio DSP code that is "inserted" into the audio renderer where there is one audio buffer.
This would be similar to MAX/MSP gen, and other software that allows deep access to the audio buffer.
This would also allow a user to make an advanced synth or sound design generator with a combination of very simple nodes.
Also for audio effects that need an audio buffer (for example a delay effect) we can still use the output of the audio objects renderer with other audio-buffer nodes. In a similar way to render layer as image allows layers to be rastered.