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    • 1. 发明授权
    • Frequency characteristics control device
    • 频率特性控制装置
    • US09136962B2
    • 2015-09-15
    • US13161357
    • 2011-06-15
    • Yasuhiro Kawano
    • Yasuhiro Kawano
    • H04B1/00H03G5/00H04H60/04H04R3/04
    • H04H60/04H04R3/04
    • A frequency characteristics control device of a mixer mixes a first audio signal and a second audio signal inputted to the mixer. In the frequency characteristics control device, a characteristics detection section detects a first frequency characteristic of the first audio signal and a second frequency characteristic of the second audio signal. Based on the first and second frequency characteristics, a removal band detection section detects a removal band in which a level of the first audio signal is higher than a level of the second audio signal. A filtering process section performs a filtering process on the second audio signal so as to attenuate a component of the second audio signal in the removal band. A output section mixes the first audio signal inputted to the mixer and the second audio signal on which the filtering process section has performed the filtering process.
    • 混频器的频率特性控制装置混合输入到混频器的第一音频信号和第二音频信号。 在频率特性控制装置中,特性检测部检测第一音频信号的第一频率特性和第二音频信号的第二频率特性。 基于第一和第二频率特性,去除频带检测部分检测第一音频信号的电平高于第二音频信号的电平的去除频带。 滤波处理部分对第二音频信号执行滤波处理,以便衰减去除频带中的第二音频信号的分量。 输出部分混合输入到混合器的第一音频信号和滤波处理部分进行过滤处理的第二音频信号。
    • 7. 发明授权
    • Watermark data embedding apparatus and extracting apparatus
    • 水印数据嵌入装置及提取装置
    • US07370204B2
    • 2008-05-06
    • US10364484
    • 2003-02-11
    • Yasuhiro Kawano
    • Yasuhiro Kawano
    • H04L9/00
    • H04H20/31G10H1/0066G10H2240/041G10L19/018
    • By a program process, CPU 31 embeds a watermark data into a waveform data stored in wave memory 41a. The program includes a step for detecting a characterizing part (attack part and loop part) of a waveform data that represents a waveform of a musical tone where the characterizing part represents characteristics of the musical tone, and a step for embedding a watermark data into a part of the waveform data excluding the detected characterizing part. Further, CPU 31 can also extract the watermark data by a program process including a step for detecting the characterizing part and a step for extracting the watermark data embedded in a part excluding the detected characterizing part. Thus, from waveform data including a watermark data, natural musical tones can be reproduced without deteriorating the characteristics of the musical tones at the time of reproduction.
    • 通过程序处理,CPU 31将水印数据嵌入到存储在波形存储器41a中的波形数据中。 该程序包括用于检测表示特征部分表示乐音的特征的音调波形的波形数据的特征部分(攻击部分和环路部分)的步骤,以及用于将水印数据嵌入到 不包括检测到的特征部分的波形数据的一部分。 此外,CPU 31还可以通过包括用于检测特征部分的步骤的程序处理和用于提取嵌入在检测到的特征部分之外的部分中的水印数据的步骤来提取水印数据。 因此,从包括水印数据的波形数据可以再现自然音乐而不会恶化音调的特性。
    • 8. 发明授权
    • Tone generator for storing and mixing basic and differential wave data
    • 音频发生器,用于存储和混合基波和差分波数据
    • US5258574A
    • 1993-11-02
    • US792290
    • 1991-11-14
    • Yasuhiro Kawano
    • Yasuhiro Kawano
    • G10H7/00G10H1/08G10H1/12G10H7/02G10H5/00H03H7/01
    • G10H1/08G10H1/125G10H7/02G10H2250/105G10H2250/481Y10S84/09
    • A tone generator comprises a basic wave memory for storing a first basic wave data of a musical tone signal, a differential wave memory for storing differential wave data between the first basic wave data and a second basic wave data which is different form the first basic wave data, and mixing device for mixing the first basic wave data and the differential wave data. The musical tone signal is produced by using the mixing device which mixes the basic wave data and the differential wave data without using directly stored sampling data memory. Further a multiplier for multiplying said differential wave data by random factors is provided, the random factors being distributed with normalized probability, resulting in that wave data not only varying tone color at random, but also resembling as a whole the basic wave tone color can be obtained.
    • 一种乐音发生器,包括用于存储乐音信号的第一基本波数据的基本波存储器,用于存储第一基本波数据与第一基本波形不同的第二基波数据之间的差分波数据的差分波存储器 数据和混合装置,用于混合第一基本波数据和差分波数据。 通过使用混合基本波数据和差分波数据的混合装置而不使用直接存储的采样数据存储器来产生乐音信号。 另外,提供用于将所述差分波数据乘以随机因子的乘法器,随机因子以归一化概率分布,导致波数据不仅随机地改变音色,而且基本波音色可以作为整体变化 获得。
    • 10. 发明申请
    • FREQUENCY CHARACTERISTICS CONTROL DEVICE
    • 频率特性控制装置
    • US20110317852A1
    • 2011-12-29
    • US13161357
    • 2011-06-15
    • Yasuhiro Kawano
    • Yasuhiro Kawano
    • H03G5/00H04B1/00
    • H04H60/04H04R3/04
    • A frequency characteristics control device of a mixer mixes a first audio signal and a second audio signal inputted to the mixer. In the frequency characteristics control device, a characteristics detection section detects a first frequency characteristic of the first audio signal and a second frequency characteristic of the second audio signal. Based on the first and second frequency characteristics, a removal band detection section detects a removal band in which a level of the first audio signal is higher than a level of the second audio signal. A filtering process section performs a filtering process on the second audio signal so as to attenuate a component of the second audio signal in the removal band. A output section mixes the first audio signal inputted to the mixer and the second audio signal on which the filtering process section has performed the filtering process.
    • 混频器的频率特性控制装置混合输入到混频器的第一音频信号和第二音频信号。 在频率特性控制装置中,特性检测部检测第一音频信号的第一频率特性和第二音频信号的第二频率特性。 基于第一和第二频率特性,去除频带检测部分检测第一音频信号的电平高于第二音频信号的电平的去除频带。 滤波处理部分对第二音频信号执行滤波处理,以便衰减去除频带中的第二音频信号的分量。 输出部分混合输入到混合器的第一音频信号和滤波处理部分进行过滤处理的第二音频信号。