Signal processing device and sound image orientation apparatus

摘要

A signal processing device includes a filter that is set to frequency characteristics in which a dip existing in an intermediate and high frequency range is smoothed in the frequency characteristics of a virtual characteristic applying filter for applying transfer characteristics of a space transfer path to a sound signal, the space transfer path extending from a virtually set orientation of a sound image to an ear of a listener, an equalizer that forms the dip by cutting a part of the intermediate and high frequency range, and an adjusting unit that adjusts at least a central frequency of the dip. An input signal is passed through the filter and the equalizer.