Acoustic processing device

摘要

There is provided an acoustic processing device capable of applying acoustic processing matching listener's sense to reproduce an audio signal with satisfactory sound quality in terms of auditory sense irrespective of the characteristics of a sound source. The acoustic processing device (1) includes a gain calculation section (5) that calculates a gain correction amount corresponding to predetermined auditory sense characteristics, an offset gain calculation section (6) that calculates a gain offset based on a frequency characteristics of an audio signal analyzed by a frequency analysis section (3), an acoustic signal generation section (7) that generates an acoustic signal based on the gain correction amount and the gain offset, and an acoustic addition section (8) that adds the generated acoustic signal to the audio signal.

主权项

1. An acoustic processing device capable of applying acoustic processing matching listener's sense to reproduce an audio signal with satisfactory sound quality in terms of auditory sense irrespective of characteristics of a sound source, said acoustic processing device comprising:
a gain calculation section that calculates a gain correction amount corresponding to predetermined auditory sense characteristics based on a signal level of the audio signal from the sound source; a frequency analysis section that analyzes a frequency of the audio signal; an offset gain calculation section that calculates a gain offset for the audio signal based on the frequency characteristics of the audio signal analyzed by the frequency analysis section; an acoustic signal generation section that generates an acoustic signal to be added to the audio signal based on the gain correction amount calculated by the gain calculation section and gain offset calculated by the offset gain calculation section; and an acoustic addition section that adds the acoustic signal generated by the acoustic signal generation section to the audio signal, wherein the offset gain calculation section calculates the grain offset based on a difference in the signal level of the audio signal between a maximum frequency level value and an intercept value, where the intercept value is a signal level value at which a Fast Fourier Transform point is zero.