The use of Wallman deforming circuit brings the merits of a good linearity and high-speed attribute while overcomes the defect of sound thinness caused by Wallman circuit.

• 渥尔曼变形电路的应用，具有渥尔曼电路的良好线性与高速性，却又克服了渥尔曼电路声音单薄的缺点。