el.meter([props], x)

A pass-through node which analyses its incoming signal, measuring the maximum and minimum peak value each block. The result is emitted through the core Renderer event interface with an event object matching the following structure.

interface MeterEvent {
  source: string?;
  min: number;
  max: number;
};

Use the name property to distinguish one meter node from another. The name of a given meter node will propagate as the source property in the resulting meter event objects. For example,

core.render(
  el.meter({name: 'left'}, el.cycle(440)),
  el.meter({name: 'right'}, el.cycle(441)),
);

core.on('meter', function(e) {
  if (e.source === 'left') {
    handleLeftPeakValue(e.max);
  }
  if (e.source === 'right') {
    handleRightPeakValue(e.max);
  }
});

Props