... Analyzer Real Time 1/1 & 1/3 Octave band Analysis TES-1358 Sound Analyzer Real Time 1/1 & ... 1/3 Octave band Analysis TES-1358A (230V) TES-1358B (110V) Real ... 60-130dB1/1 Octave and 1/3 Octave band filters 1/1 Octave band center frequencies : (9 bands) 31.5Hz, ... , 500Hz, 1KHz, 2KHz, 4KHz, and 8KHz. 1/3 Octave band center frequencies : (27 bands) 25Hz, 31.5Hz, 40Hz, 50Hz ...