Patent ID: 8654891

Claim:
A peak suppressing apparatus comprising: a processor configured to: perform a pre-emphasis process on a signal, which is to be wirelessly transmitted and a peak of which is to be suppressed, the pre-emphasis process emphasizing a given frequency range component of the signal; limit, to a given threshold value, an amplitude of the signal that has been subjected to the pre-emphasis process; perform a de-emphasis process on the signal, whose amplitude has been limited, the de-emphasis process suppressing the given frequency range component of the signal; and control the given threshold value; and a frequency converter coupled to the processor and configured to convert, to allow wireless transmission, frequency of the signal that has been subjected to the de-emphasis process, wherein the processor changes a pre-emphasis amount for the signal that is to be wirelessly transmitted, based on the given threshold value that is being controlled, and changes a de-emphasis amount for the signal whose amplitude has been limited, based on the given threshold value that is being controlled.