Low-frequency-band voice reconstructing device, voice signal processor and recording apparatus

A low-frequency-band voice reconstructing device, to which a voice signal obtained by removing a signal in a low frequency band is inputted, the device reconstructing the signal in the low frequency band based on the input voice signal, comprising:

• first means for extracting part of harmonic components of a pitch signal of voice from the input voice signal;
• second means for squaring a signal extracted by the first means;
• third means for correcting an amplitude level of the signal obtained by the second means;
• and
• fourth means for extracting a signal of a pitch frequency and harmonic signals of a lower limit frequency or below of the input voice signal, from the signal obtained by the third means.

A voice signal processor comprising:

• wind noise determining means for determining a level of wind noise contained in an input voice signal, based on the input voice signal;
• low-frequency-band signal extracting means for extracting a signal in a low frequency band of a given frequency or below, from the input voice signal;
• high-frequency-band signal extracting means for extracting a signal in a high frequency band of the given frequency or above, from the input voice signal;
• low-frequency-band voice reconstructing means for reconstructing the low-frequency-band signal contained in the input voice signal based on the high-frequency-band signal extracted by the high-frequency-band signal extracting means, the low-frequency-band signal being of the given frequency or below;
• adjusting means for adjusting a rate of adding the low-frequency-band signal extracted by the low-frequency-band signal extracting means and the low-frequency-band signal generated by the low-frequency-band voice reconstructing means, to the high-frequency-band signal, in accordance with the level of wind noise determined by the wind noise determining means;
• and
• adding means for adding both of the low-frequency-band signals after the adjustment by the adjusting means, to the high-frequency-band signal.