Attenuverter

Scales a signal up or down, flips its polarity, and adds a DC offset. A small, essential utility for taming hot modulation, inverting an envelope, or biasing a CV into a useful range.

Controls

• Amt — attenuverts the input from -1 to +1: full clockwise passes it through, centre mutes it, the lower half inverts.
• Ofs — adds a steady DC offset of up to ±5, shifting the whole signal.

Inputs & outputs

• In — the signal to scale; audio or CV both work.
• CV — voltage control over the amount; it sums with the Amt knob — a ±5 swing spans the full range — and the total is clamped so gain never passes unity.
• Out — the scaled, offset result.
• Inv — the same result with its polarity flipped; send opposing modulation to two destinations at once.

Tips

• To turn a unipolar source (0 to +5) bipolar, set Amt to span the range you want, then dial Ofs to centre it on zero.
• Patch a slow LFO into CV to fade the input in and out.