code: function(
              aSampleRate,
              aSequenceMS,
              aSeekWindowMS,
              aOverlapMS
          ) {
              // accept only positive parameter values - if zero or negative, use old values instead
              if (aSampleRate > 0) {
                  this.sampleRate = aSampleRate;
              }
              if (aOverlapMS > 0) {
                  this.overlapMs = aOverlapMS;
              }
  
              if (aSequenceMS > 0) {
                  this.sequenceMs = aSequenceMS;
                  this.bAutoSeqSetting = false;
              } else {
                  // zero or below, use automatic setting
                  this.bAutoSeqSetting = true;
              }
  
              if (aSeekWindowMS > 0) {
                  this.seekWindowMs = aSeekWindowMS;
                  this.bAutoSeekSetting = false;
              } else {
                  // zero or below, use automatic setting
                  this.bAutoSeekSetting = true;
              }
  
              this.calcSeqParameters();
  
              this.calculateOverlapLength(this.overlapMs);
  
              // set tempo to recalculate 'sampleReq'
              this.tempo = this._tempo;
          }
docs: Sets routine control parameters. These control are certain time constants
  defining how the sound is stretched to the desired duration.
  
  'sampleRate' = sample rate of the sound
  'sequenceMS' = one processing sequence length in milliseconds (default = 82 ms)
  'seekwindowMS' = seeking window length for scanning the best overlapping
  position (default = 28 ms)
  'overlapMS' = overlapping length (default = 12 ms)