Static spectrum power dependence type acoustic emphasis system

摘要

The signal of the desire where the acoustic emphasis system regarding speech recognition or audio control (1) was described, as for this acoustic emphasis system (1), the strain the signal of the desire which can be surpassed (z) was connected to signal input and reference signal input and the both signal input which are conveyed, the reference signal which operates as the estimator regarding the distortion of the signal of the aforementioned desire (x) of making use the aforementioned strain can surpass (z) the spectrum processor (SP) with it possesses in order to process. The aforementioned spectrum processor (SP) for the aforementioned processing, factor C'ga it is decided, in order the aforementioned estimator the C'bi reference signal (x) to become function of the product of spectrum power in that case, it is constituted, the said factor C'ha signal z and it is decided as spectrum ratio between the component which essentially is static the time in x vis-a-vis. , the kind of factor which is decided by the static part of these signals makes the application of the audio detector which is important in the acoustic emphasis system unnecessary.