Patent ID: 8351619
Filing Date: 2013-01-08
Classification: G10L,H03G,H04R

Abstract:
1. An auditory sense correction device comprising: a frequency band divider configured to divide an original audio signal in an original frequency band into first and second audio signals in first and second frequency bands, the original frequency band including the first and second frequency bands, the first frequency band being different from the second frequency band; a level difference calculator configured to calculate a difference between signal level of the first audio signal in the first frequency band and signal level of the original audio signal as a first differential signal, the level difference calculator being configured to calculate a difference between signal level of the second audio signal in the second frequency band and signal level of the original audio signal as a second differential signal; a gain offset calculator configured to calculate a first correction gain by applying offset processing to a first gain of the first audio signal based on the first differential signal calculated by the level difference calculator, the gain offset calculator being configured to calculate a second correction gain by applying the offset processing to a second gain of the second audio signal based on the second differential signal calculated by the level difference calculator; a gain setter configured to generate a first corrected audio signal by multiplying the first audio signal by the first correction gain and configured to generate a second corrected audio signal by multiplying the second audio signal by the second correction gain, the gain setter being configured to add the first and second corrected audio signals to the original audio signal in the original frequency band; a first response speed controller configured to perform response speed control for the original audio signal in the original frequency band to make a change in the signal level of the original audio signal gradual; and a gain corrector configured to apply gain correction to the original audio signal whose signal level has been changed by the first response speed controller in accordance with the first and second frequency bands to be subjected to the offset processing by the gain offset calculator, wherein the gain offset calculator is configured to perform the offset processing for a signal that has been subjected to the gain correction by the gain corrector.