question: returns the duration in microseconds of this wav . concode_field_sep int numChannels concode_elem_sep int bitsPerSample concode_elem_sep int sampleRateHz concode_elem_sep long dataSize concode_elem_sep long dataStartPosition concode_elem_sep int encoding concode_elem_sep int averageBytesPerSecond concode_elem_sep int blockAlignment concode_field_sep int getEncoding concode_elem_sep int getBitrate concode_elem_sep long getPosition concode_elem_sep long getTimeUs concode_elem_sep int getBytesPerFrame concode_elem_sep boolean hasDataBounds concode_elem_sep void setDataBounds concode_elem_sep int getNumChannels concode_elem_sep int getSampleRateHz
target: long function ( ) { long loc0 = dataSize / blockAlignment ; return ( loc0 * C . MICROS_PER_SECOND ) / sampleRateHz ; }