dist/wavefile.js
function unpackString(buffer, index=0, end=buffer.length) {
  return unpack(buffer, index, end);
}
function unpackString(buffer, index=0, end=buffer.length) {
  return unpack(buffer, index, end);
}
function unpackString ( buffer , index = 0 , end = buffer . length ) { return unpack ( buffer , index , end ) ; }
Read a string of UTF-8 characters from a byte buffer.
@param {!Uint8Array|!Array<number>} buffer A byte buffer.
@param {number=} index The buffer index to start reading.
@param {number=} end The buffer index to stop reading, non inclusive.
Assumes buffer length if undefined.
@return {string}
Read a string of UTF - 8 characters from a byte buffer .