Since I’ve already got a <chain-blam> on the go, why don’t I add another element to the chain? After all, it costs me nothing (well, maybe 1 or 2 kilobytes).
Since all signals in HYPERBLAM are in stereo, we can pan them left and right in the stereo field. For this, we just need a <pan-blam> element, housing a StereoPannerNode, with its pan prop mapping to the node’s pan audioParam. Try saying that fast!
<chain-blam out="bus">
<gain-blam gain="1"></gain-blam>
<pan-blam pan="0"></pan-blam>
</chain-blam>
In this example, pan is controlled by another <dial-blam> interface. As you move the associated range input back and forth, notice the smooth transition. HYPERBLAM is careful to remove the unwanted pops and crackles you might have heared in basic Web Audio implementations. Here, it’s a case of substituting the setValueAtTime method with setTargetAtTime.
For every change to the input value, there is a tiny, 5 millisecond interpolation between the former and latter values. This eliminates the popping sound created by an abrupt change severing the signal’s waveform.