Patent ID: 7999580

Claim:
A band converted signal generator for converting a first signal, the first signal including components of a limited frequency band and components of a frequency band outside the limited frequency band, to a second signal, the band converted signal generator comprising: a component emphasis means emphasizing only one or more specific frequency components of the first signal to generate the second signal, the specific frequency components being selected from among the components of the frequency band outside the limited frequency band, wherein the component emphasis means includes, an emphasis propriety determination section extracting each of the specific frequency components and determining whether the emphasizing is proper or not, that is, whether each of the extracted specific frequency components is a frequency component that needs to be emphasized or another frequency component that does not need to be emphasized; and an emphasis execution section emphasizing each of the specific frequency components when the emphasis propriety determination section determines that the emphasizing is proper, the emphasis execution section invalidating each of the specific frequency components when the emphasis propriety determination section determines that the emphasizing is not proper.