Patent ID: 8879765
Filing Date: 2014-11-04
Classification: H04R

Abstract:
1. A hearing optimization device, preliminarily providing a high boost (high frequency boosting) frequency characteristic reference line for high frequency emphasis and a low boost (low frequency boosting) frequency characteristic reference line for low frequency emphasis in order for separate gain control of an input audio signal according to frequency, having: a synchronous adjustment means for the high boost (high frequency boosting) frequency characteristic reference line and the low boost (low frequency boosting) frequency characteristic reference line to synchronously adjust the two characteristic reference lines, namely the high boost (high frequency boosting) frequency characteristic reference line and the low boost (low frequency boosting) frequency characteristic reference line, by a pair of adjustment means; an audio signal processing and generating means, whereby the input audio signal is dual distributed, and two audio signal processings are carried out for the high boost (high frequency boosting) audio signal to emphasize a high frequency range according to the high boost (high frequency boosting) frequency characteristic reference line and the low boost (low frequency boosting) audio signal to emphasize a low frequency range according to the low boost (low frequency boosting) frequency characteristic reference line; and a synthesized audio signal output means, wherein: the two audio signals generated by the audio signal processing and generating means are synthesized to be used as an audio signal output; the high boost (high frequency boosting) frequency characteristic reference line and the low boost (low frequency boosting) frequency characteristic reference line are crossed at a memorized frequency; synchronous emphasis is carried out by changing inclinations of the high boost (high frequency boosting) frequency characteristic reference line and the low boost (low frequency boosting) frequency characteristic reference line, the crossing point being a rotation center; and the adjustment means, which synchronously adjusts the high boost (high frequency boosting) frequency characteristic reference line and the low boost (low frequency boosting) frequency characteristic reference line with each other, adjusts the high boost (high frequency boosting) frequency characteristic reference line and the low boost (low frequency boosting) frequency characteristic reference line in symmetrical inclination to each other, the crossing point being a rotation center where the high boost (high frequency boosting) frequency characteristic reference line and the low boost (low frequency boosting) characteristic reference line are crossed with each other.