Question

Is it possible and if yes how?

I want to sume multiple float32Arrays into one float32array.

I know this sounds as a stupid question but it turnes out doing this mannually takes quit some time.

Is it possible to make it faster than this?

recBuffers is an array of float32Array buffers with a length of approx 6594048

function mergeBuffers(recBuffers, recLength){

  var result = new Float32Array(recLength);
  var offset = 0

  for (var i=0; i<recBuffers.length; i++){  
      for (var j=0; j<recBuffers[i].length; j++){
        result[j] += recBuffers[i][j];
      } 
  }
  return result;
}

Answer 1

From the MDN :

Once established, you can reference elements in the array using the
object’s methods, or using standard array index syntax (that is, using
bracket notation).

Given two float32Arrays a and b, you can do this :

var c = new Float32Array(Math.min(a.length, b.length));
for (var i=c.length; i-->0;) c[i] = a[i]+b[i];