A multiuser detector method and receiver that detects and decodes synchronous or asynchronous CDMA subchannels having different spreading factors with reduced computational complexity. The method adjusts the masking block to precisely hide an image of a subject with its position and size changed when a zoom magnification is changed under a state where the masking block is set. The at least two protrusions comprise at least two lips. More particularly, the method includes the steps of providing a bicycle frame comprising a head tube, providing a fork steerer including a groove formed in the fork steerer at least partially within the head tube, and positioning a portion of the cable within the groove. High-frequency, or time-critical, signals that are received from the device-under-test are processed andor reformed by the preconditioning integrated circuit, for subsequent transmission to the automated test equipment. The warping response characteristic comprises the inverse of the attenuation versus frequency characteristic of the line, and affords a substantially flat system gain response over a predetermined frequency spectrum.