using the vocorder

9-38 — elektor september 1980 using the Elektor Vocoder using the Elektor Voeoder Several months ago (Elektor no. 56, December 1979), Elektor published a 10 channel vocoder. When building a vocoder there are a few "obstacles" which ought to be taken into account. Readers who have already built one and are familiar with it will find that this article provides useful information on how to improve on the vocoder"s technical qualities. To start with it is a good idea to check the initial adjustment. F. Visser Each channel in the vocoder contains three presets. Two of these are intended to eliminate leakage of the Voice and Carrier signals to the vocoder"s output; the third sets the dynamic range of the voltage control circuit (in the analyser section, where the audio signals are split up into small bands and are converted into DC control voltages). This is im- portant if the vocoder is to respond to a wide range of input signal levels and reproduce the speech sounds as accu- rately ...