Check the listing for details. Moog Spectravox Semi-Modular Analog Spectral Processor. Condition: New. Listed at 599.00 USD. In VOCODER mode its 10 analysis filters map the timbral characteristics of any external sound onto any other sound you can imagine. With the ability to emphasize vowel sounds via the Hiss and Buzz functionality of the Moog 16 Channel Vocoder, Spectravox is both a major step forward for analog filter banks and a loving exploration of early music technology history.Scramble the Frequency SpectrumScramble the frequency spectrum and create wonderfully unpredictable textures with patch points for each filter in the filter bank and included patch cables.