KOSZALIN stereo vc frequency shiftor operator’s manual rev. 1964/1.
module explained SALUT because it will short circuit the +12V and +5V power lines. Always pay particularly close at- Thank you for purchasing this Xaoc Devices tention to the proper orientation of your rib- product. Koszalin [kɔˈʃalin] is a stereo fre- bon cable on both sides! quency shifter (2 ins/4 outs) offering both quasi-exponential and linear frequency mod- The module should be fastened by mounting ulation as well as full stereo feedback under the supplied screws before powering up.
front panel overview fig.
frequency shifting havior in the "Negative Frequencies?" section). That means the new components are no lon- The functions of these two pairs effectively ger multiples of the first frequency; hence the swap when the shift knob is turned to the left signal is inharmonic and non-periodic. of 0Hz, or a negative control voltage is applied.
negative frequencies 1 Amplitude Spectrum of original signal 0.8 0.6 0.4 0.2 0 Frequency (Hz) 0 1 1000 4000 6000 Amplitude 8000 1000 Spectrum of frequency shifted signal 0.8 0.6 0.4 0.2 0 Frequency (Hz) 0 1 1000 4000 6000 Amplitude 8000 1000 Spectrum of frequency scaled signal 0.8 0.6 0.4 0.2 0 Frequency (Hz) 0 1000 4000 6000 8000 1000 fig. 2: frequency shifting vs. frequency scaling 1 Amplitude Original signal 0.8 Frequency shifted signal 0.6 Signal as we hear it 0.
effects of feedback Gain 1 0.8 0.6 0.4 0.2 0 0 5 000 10 10 000 8 6 Frequency (Hz) 15 000 4 Time (s) 2 20 000 0 fig. 4: time-frequency response of frequency shifting with feedback modulation sounds different than positive-only Interestingly, shifting a harmonic signal down FM. Frequency shifting by increasing negative moves its fundamental to an inaudible DC.
patch ideas times. If the shift is slight, a comb response power regulators. Additionally, we suggest is created resembling a very deep, resonant avoiding "flying bus" cables as they increase flanger. Phase cancellation creates ripples that coupling between modules which can cause move in time and frequency (fig. 4), yielding a interference and instability. spectacular barber-pole effect. Koszalin offers PATCH IDEAS two controls of this behavior through its regen and density knobs and CV inputs.
MAIN FEATURES WARRANTY TERMS XAOC DEVICES WARRANTS THIS PRODUCT TO BE FREE OF DEFECTS IN MATERIALS OR WORKMANSHIP AND TO CONFORM WITH THE SPECIFICATIONS AT THE TIME OF SHIPMENT FOR ONE YEAR FROM THE DATE OF PURCHASE. DURING THAT PERIOD, ANY MALFUNCTIONING OR DAMAGED UNITS WILL BE REPAIRED, SERVICED, AND CALIBRATED ON A RETURN-TO-FACTORY BASIS.
