The Voice Spectra is a high quality studio vocoder, appreciated by the staff at music studios, professional musicians, etc. in Japan. The articulation of the output signal is extremely good, being distinguished by remarkable clarity and distinctiveness. This quality of articulation, among other things, is what distinguishes SKY Soundlab from other less sophisticated vocoders like the MAM VF11. The Voice Spectra comes with a inbuilt power supply as well.

The Voice Spectra has a very clear sound for an analogue vocoder. A big part of why it makes voices so intelligible is the syllable function which inserts noise bursts into the signal for “s” and “sh” syllables. This is a pretty rare feature on an analogue vocoder, and it really helps with intelligiblity. The syllable function is also really cool for creating rhythms.

The Voice Spectra has a good reputation in Japan for clear extent, high timbre, and for Speech Tracking Function (STF). STF is basically a pitch- to-voltage converter which functions by reading the glottal pulses of the speech signal. The control voltages from the output of the pitch extractor are fed to the VCO, so that this follow the cadences of the speech signaI. STF is an interesting additional facilities only to be found on more expensive vocoders like EMS.

Everyone familiar with vocoding will appreciate the Voice Spectra’s compressor and Voiced/Unvoiced Detector.

Technical Specifications:

Mic-line inputs: MIC -40dBm / 47K Line: 0dBm / 20K

Synthesis/Instrument Input: 0dBm / 100K Output: +0dBm

Filterbank:12 Analysing filters and 12 Synthesizing filters

#01 90 - 130 (Hz) #02 130 - 190 #03 190 - 280 #04 280 - 410 #05 410 - 610 #06 610 - 900 #07 900 - 1340 #08 1340 - 1950 #09 1950 - 2800 #10 2800 - 4100 #11 4100 - 6070 #12 6070 - 8900

Internal excitation sources: white noise generator and sawtooth oscillator (20-900Hz). Both may be gated by The Voiced/Invoiced Detector. Oscillator frequency fixed or tracking mode.

Metering: LED for speech and excitation levels