accuracyTracker speedTracker memoryTracker recognizerMonitor standardActiveListFactory wordActiveListFactory wordActiveListFactory standardActiveListFactory standardActiveListFactory standardActiveListFactory numDictionary baseDictionary numModel baseModel 0.5 0.5 audioFileDataSource dataBlocker speechClassifier speechMarker nonSpeechDataFilter preemphasizer windower fft melFilterBank dct liveCMN featureExtraction