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1. 发明授权

US06362764B1 Digital to analog conversion apparatus and method with cross-fading between new and old data 失效
标题翻译：数字到模拟转换装置和新旧数据之间具有交叉衰落的方法
公开(公告)号：US06362764B1
公开(公告)日：2002-03-26
申请号：US09619960
申请日：2000-07-20
申请人： Koji Niimi , Ryuuji Wakatsuki , Kiyoto Kuroiwa
发明人： Koji Niimi , Ryuuji Wakatsuki , Kiyoto Kuroiwa
IPC分类号： H03M106
CPC分类号： H03M1/70
摘要： Most appropriate data of a plurality of level-converted digital data obtained by level conversion of the same input digital data by different conversion factors is selected based on a signal quality of each level-converted digital data. The other level-converted digital data is attenuated to or below a predetermined noise level. Switching between previously selected data and newly selected data is effected by cross-fading. The level-converted digital data are D/A converted to respective analog signals. Level conversion of the analog signals are carried out again based on respective corresponding ones of the conversion factors to restore a level of the input digital data, and all the level-converted analog signals are then added together. When an amplitude level of the input digital data exceeds a predetermined value, the cross-fading is started between the previously selected data and the newly selected data which are delayed by the predetermined amount of delay, and when during the cross-fading a larger rate of change in the amplitude level of the input digital data than a predetermined value is detected, the cross-fading is carried out at a rate larger than a predetermined rate in dependence on the rate of change in the amplitude level. In another form, the cross-fading is started at a first rate when the amplitude level exceeds a first predetermined value, and when during the cross-fading the amplitude level exceeds a second predetermined value larger than the first one, the cross-fading is carried out at a second rate larger than the first rate.
摘要翻译：基于每个电平转换的数字数据的信号质量来选择通过不同的转换因子对相同的输入数字数据进行电平转换而获得的多个电平转换数字数据的最合适的数据。其他电平转换的数字数据被衰减到或低于预定的噪声电平。先前选择的数据与新选择的数据之间的切换是通过交叉衰落来实现的。电平转换的数字数据被D / A转换为相应的模拟信号。基于相应的相应转换因子再次执行模拟信号的电平转换，以恢复输入数字数据的电平，然后将所有电平转换的模拟信号相加在一起。当输入数字数据的幅度电平超过预定值时，在先前选择的数据和延迟了预定延迟量的新选择的数据之间开始交叉衰落，并且当在褪色期间较大的速率检测到输入数字数据的振幅电平的变化超过预定值，则以相对于振幅电平的变化率的速率大于预定速率的速度进行交叉衰落。在另一种形式中，当幅度电平超过第一预定值时，以第一速率开始交叉衰落，并且当在交叉衰落期间，幅度电平超过大于第一预定值的第二预定值时，交叉衰落为以比第一速率大的第二速率进行。

2. 发明授权

US5729614A Howling remover composed of adjustable equalizers for attenuating complicated noise peaks 失效
标题翻译：啸声去除器由可调平衡器组成，用于衰减复杂的噪声峰值
公开(公告)号：US5729614A
公开(公告)日：1998-03-17
申请号：US526261
申请日：1995-09-11
申请人： Yuichi Nagata , Satoshi Suzuki , Morito Yamada , Masao Yoshida , Mikio Kitano , Kiyoto Kuroiwa , Shigenobu Kimura
发明人： Yuichi Nagata , Satoshi Suzuki , Morito Yamada , Masao Yoshida , Mikio Kitano , Kiyoto Kuroiwa , Shigenobu Kimura
IPC分类号： G10K15/04 , H04R3/02 , H04R27/00
CPC分类号： H04R3/02
摘要： In an apparatus for amplifying a sound while suppressing a howling noise, a microphone collects a sound and converts the collected sound into a corresponding input signal. An amplifier amplifies the input signal to generate the sound through a loudspeaker. A plurality of equalizers are interposed between the microphone and the amplifier, each equalizer having a variable attenuation frequency for attenuatively filtering the input signal around the attenuation frequency. Detection is conducted for detecting a plurality of noise spectrum peaks of the howling noise contained in the collected sound. Then, an adjustment is conducted adjusting respective variable attenuation frequencies of the plurality of the equalizers correspondingly to the plurality of the detected noise spectrum peaks to thereby remove the howling noise from the generated sound.
摘要翻译：在抑制啸叫噪声的同时放大声音的装置中，麦克风收集声音并将收集的声音转换成相应的输入信号。放大器放大输入信号，通过扬声器产生声音。在麦克风和放大器之间插入多个均衡器，每个均衡器具有可变的衰减频率，用于对围绕衰减频率的输入信号进行衰减滤波。进行检测，以检测包含在收集的声音中的啸声的多个噪声谱峰。然后，对应于多个检测到的噪声频谱峰值进行调整多个均衡器的各个可变衰减频率，从而从产生的声音中去除啸声。

3. 发明授权

US5719346A Harmony chorus apparatus generating chorus sound derived from vocal sound 失效
标题翻译：和声合唱装置产生来自声乐的合唱声
公开(公告)号：US5719346A
公开(公告)日：1998-02-17
申请号：US597437
申请日：1996-01-31
申请人： Masao Yoshida , Yuichi Nagata , Kiyoto Kuroiwa , Satoshi Suzuki , Mikio Kitano
发明人： Masao Yoshida , Yuichi Nagata , Kiyoto Kuroiwa , Satoshi Suzuki , Mikio Kitano
IPC分类号： G10H1/00 , G10H1/10 , G10H1/36 , G10K15/04
CPC分类号： G10H1/10 , G10H1/361 , G10H2210/251 , G10H2210/281 , G10H2240/311
摘要： A harmony chorus apparatus collects an original of a vocal sound performed after a main melody pattern of a song, and adds a chorus sound derived after a chorus melody pattern of the same song to the vocal sound. A memory stores a main melody data representative of the main melody pattern and a chorus melody data representative of the chorus melody pattern which is designed in harmony with the main melody pattern. A pitch difference calculator sequentially retrieves the main melody data and the chorus memory data from the memory in synchronization with progression of the song, and calculates a pitch difference between the main melody pattern and the chorus memory pattern according to the retrieved main melody data and chorus melody data. A chorus generator shifts a pitch of the collected vocal sound by the calculated pitch difference to generate the chorus sound in the form of a variation of the vocal sound. A mixing device mixes the generated variation of the vocal sound and the collected original of the vocal sound with each other to thereby create a harmony of the song.
摘要翻译：和声合唱装置收集在歌曲的主旋律图案之后执行的声音的原件，并且将相同歌曲的合唱旋律图案之后得到的合唱声添加到声音中。存储器存储代表主旋律图案的主旋律数据和表示与主旋律图案一致设计的合唱旋律模式的合唱旋律数据。音调差分计算机与歌曲的进行同步地顺序地从存储器中检索主旋律数据和合唱存储器数据，并且根据检索到的主旋律数据和合唱来计算主旋律模式和合唱存储器模式之间的音调差旋律数据合唱发生器将所收集的声音的音调偏移所计算的音调差以产生以声音变化的形式的合唱声音。混合装置将所产生的声音变化与收集的声音原声相互混合，从而产生歌曲的和谐。

4. 发明申请

US20050220308A1 Apparatus for creating sound image of moving sound source 失效
标题翻译：用于创建移动声源的声像的装置
公开(公告)号：US20050220308A1
公开(公告)日：2005-10-06
申请号：US11093653
申请日：2005-03-29
申请人： Satoshi Sekine , Kiyoto Kuroiwa
发明人： Satoshi Sekine , Kiyoto Kuroiwa
IPC分类号： H04S1/00 , H04R5/00 , H04S3/00 , H04S7/00
CPC分类号： H04S7/30 , H04S7/40
摘要： In a sound image creating apparatus, a distance computation section computes intermediate positions of a moving point along a trajectory line from a movement start position to a movement end position, and further computes a variable distance between each of the intermediate positions of the moving point and a fixed point. A velocity computation section computes a variable velocity of the moving point relative to the fixed point along the time axis on the basis of the variable distance. A signal processing section attenuates or delays an input sound signal in accordance with the variable distance, and varies a pitch of the input sound signal on the basis of the variable velocity, thereby creating the sound image of the input sound signal along the time axis based on principle of Doppler effect.
摘要翻译：在声像制作装置中，距离计算部计算从移动开始位置到移动结束位置的沿着轨迹线的移动点的中间位置，并且还计算移动点的每个中间位置和一个固定点。速度计算部分基于可变距离计算沿着时间轴的移动点相对于固定点的可变速度。信号处理部根据可变距离衰减或延迟输入声音信号，并且基于可变速度改变输入声音信号的音高，从而基于时间轴产生输入声音信号的声像多普勒效应原理。

5. 发明授权

US5974154A Effector with integral setting of control parameters and adaptive selecting of control programs 失效
标题翻译：具有控制参数的集成设置和控制程序的自适应选择的效能器
公开(公告)号：US5974154A
公开(公告)日：1999-10-26
申请号：US501462
申请日：1995-07-12
申请人： Yuichi Nagata , Satoshi Suzuki , Morito Yamada , Masao Yoshida , Mikio Kitano , Kiyoto Kuroiwa , Shigenobu Kimura
发明人： Yuichi Nagata , Satoshi Suzuki , Morito Yamada , Masao Yoshida , Mikio Kitano , Kiyoto Kuroiwa , Shigenobu Kimura
IPC分类号： H04S1/00 , G10H1/00 , G10H1/053 , G10H1/34 , G10K15/04 , G10K15/08 , G10K15/12 , H03G3/00
CPC分类号： G10K15/08
摘要： In an echo effector for imparting an echo effect to an audio signal based on values of a plurality of parameters, a memory is provided for memorizing an interrelationship among the plurality of the parameters which are mutually related to each other. A dial is actuated for independently setting one or more of the parameters to desired values. A microcomputer dependently sets the remaining parameters to appropriate values according to the desired values and the memorized interrelationship. Further, in a sound field effector operative according to a selected program for creating an effect simulative of a sound field in matching with a room situation under which the effector is installed, a program memory stores a plurality of programs which can be selected in terms of types of sound fields and types of room situations. A first switch is operated for designating a desired type of a sound field. A second switch is operated for designating a desired type of a room situation. One program is selected from the program memory according to both of the designated type of the sound field and the designated type of the room situation.
摘要翻译：在用于基于多个参数的值对音频信号赋予回波效应的回波效应器中，提供存储器以存储彼此相互关联的多个参数之间的相互关系。启动拨盘以独立地将一个或多个参数设置为期望值。微型计算机根据期望的值和存储的相互关系依赖地将剩余参数设置为适当的值。此外，在根据所选择的程序操作的声场效应器中，用于产生模拟与安装有效应器的房间情况相匹配的声场的效果，程序存储器存储多个可以根据声场类型和房间类型。操作第一开关用于指定期望类型的声场。操作第二开关用于指定期望类型的房间情况。根据指定的声音类型和房间情况的指定类型，从程序存储器中选择一个程序。

6. 发明授权

US06201490B1 DA conversion apparatus to reduce transient noise upon switching of analog signals 失效
标题翻译： DA转换装置，以在模拟信号切换时减少瞬态噪声
公开(公告)号：US06201490B1
公开(公告)日：2001-03-13
申请号：US09191425
申请日：1998-11-12
申请人： Toshihiko Kawano , Ryuuji Wakatsuki , Kiyoto Kuroiwa
发明人： Toshihiko Kawano , Ryuuji Wakatsuki , Kiyoto Kuroiwa
IPC分类号： H03M162
CPC分类号： H03M1/0626 , H03M1/70
摘要： A D/A conversion apparatus includes a DSP which receives and converts input digital data with different conversion factors, to generate a plurality of digital data having different levels, selects one of the plurality of the generated digital data, depending upon the signal quality of the input digital data, while attenuating the other digital data to be lower than a predetermined noise level. A plurality of D/A converting devices convert the respective generated digital data into corresponding analog signals. A re-converting device converts the level of each of the analog signals into an original level, based on a corresponding one of the conversion factors with which the input digital data is converted by the DSP. An adding device adds the re-converted analog signals. An attenuating device attenuates, in an input stage of the adding device, medium-to-high frequency components of at least one of the analog signals generated by at least one of the D/A converting devices that receives the attenuated digital data, and corresponding to digital data obtained by converting the input digital data with a smaller conversion factor than that of the digital data selected and generated by the DSP.
摘要翻译： AD / A转换装置包括DSP，其接收并转换具有不同转换因子的输入数字数据，以产生具有不同电平的多个数字数据，根据输入的信号质量选择多个生成的数字数据中的一个数字数据，同时将其他数字数据衰减到低于预定噪声电平。多个D / A转换装置将各自生成的数字数据转换成相应的模拟信号。再转换装置根据输入数字数据由DSP转换的转换因数之一，将每个模拟信号的电平转换成原始电平。添加设备添加重新转换的模拟信号。衰减装置在加法装置的输入级中衰减由至少一个接收衰减的数字数据的D / A转换装置产生的至少一个模拟信号的中至高频分量，以及对应的通过以比由DSP选择和产生的数字数据的转换因子更小的转换因子转换输入数字数据而获得的数字数据。

7. 发明授权

US5710823A Howling remover having cascade connected equalizers suppressing multiple noise peaks 失效
标题翻译：具有串联连接的均衡器的啸声去除器抑制多个噪声峰值
公开(公告)号：US5710823A
公开(公告)日：1998-01-20
申请号：US526771
申请日：1995-09-11
申请人： Yuichi Nagata , Satoshi Suzuki , Morito Yamada , Masao Yoshida , Mikio Kitano , Kiyoto Kuroiwa , Shigenobu Kimura
发明人： Yuichi Nagata , Satoshi Suzuki , Morito Yamada , Masao Yoshida , Mikio Kitano , Kiyoto Kuroiwa , Shigenobu Kimura
IPC分类号： G10K15/00 , H04R3/02 , H04R27/00
CPC分类号： H04R3/02
摘要： A howling prevention apparatus prevents a howling noise which is generated in a sound amplification system using a microphone and a loudspeaker. The howling prevention apparatus utilizes a plural number of first to n-th equalizers, which have a variable frequency response and which modulate an output of the microphone. A detector detects a frequency point at which a loop gain of the system reaches a peak while supplying a standard noise signal to the loudspeaker to produce a test sound and measuring the sound collected by the microphone through the series of the equalizers. A frequency response of the first equalizer is adjusted to suppress a noise peak at and around a frequency point detected by the detector. Then, a frequency response of the second equalizer is also adjusted to suppress a noise peak at and around another frequency point detected by the detector. Lastly, a frequency response of the n-th equalizer is adjusted by subsequently repeating the above setting procedure.
摘要翻译：啸叫防止装置防止在使用麦克风和扬声器的声音放大系统中产生的啸声。啸声预防装置利用具有可变频率响应并且调制麦克风的输出的多个第一至第N均衡器。检测器检测系统的环路增益达到峰值的频率点，同时向扬声器提供标准噪声信号以产生测试声音，并通过一系列均衡器测量由麦克风收集的声音。调整第一均衡器的频率响应以抑制由检测器检测的频点处和周围的噪声峰值。然后，还调整第二均衡器的频率响应，以抑制由检测器检测到的另一频率点处和周围的噪声峰值。最后，通过随后重复上述设置过程来调整第n个均衡器的频率响应。

8. 发明授权

US5146507A Audio reproduction characteristics control device 失效
标题翻译：音频再现特性控制装置
公开(公告)号：US5146507A
公开(公告)日：1992-09-08
申请号：US482826
申请日：1990-02-21
申请人： Yuji Satoh , Hiromi Sotome , Yoshiki Fukazawa , Kiyoto Kuroiwa
发明人： Yuji Satoh , Hiromi Sotome , Yoshiki Fukazawa , Kiyoto Kuroiwa
IPC分类号： H03G5/02 , H03G7/00 , H04S5/02 , H04S7/00
CPC分类号： H04S7/305 , H03G5/025 , H03G7/002 , H04S5/02 , H04S7/307 , H04R2499/13
摘要： An audio reproduction characteristic control device reproduces various sound fields by producing reflected sounds of a reproduced source signal. Frequency response characteristic correction parameters for correcting a frequency response characteristic which varies with a reproduction environment to a standard characteristic or other predetermined characteristic is prestored in a memory and one of these parameters is read out in accordance with a designated reproduction environment and, if necessary, additionally with a designated sound field whereby the frequency response characteristic is corrected. In another aspect of the invention, reflected sound signals for front left, front right, rear left and rear right positions of a designated sound field are generated by operating input source signals with reflected sound characteristic parameters and these reflected sound signals are added to the source signals to be propagated from four directions in a space inside of an automobile. An impression of presence in the automobile thereby is improved.
摘要翻译：音频再现特性控制装置通过产生再现的源信号的反射声音再现各种声场。用于将根据再现环境变化到标准特性或其它预定特性的频率响应特性的频率响应特性校正参数预先存储在存储器中，并且根据指定的再现环境读出这些参数中的一个，并且如果需要，另外具有指定的声场，由此校正频率响应特性。在本发明的另一方面中，通过用反射的声音特征参数操作输入源信号来产生指定声场的前左，前右，后左和后右位置的反射声音信号，并将这些反射的声音信号添加到源信号从汽车内的空间中的四个方向传播。从而改善了在汽车中的存在印象。

9. 发明授权

US08170236B2 Pitch detection apparatus and method 有权
标题翻译：间距检测装置及方法
公开(公告)号：US08170236B2
公开(公告)日：2012-05-01
申请号：US12616702
申请日：2009-11-11
申请人： Takayasu Kondo , Kiyoto Kuroiwa
发明人： Takayasu Kondo , Kiyoto Kuroiwa
IPC分类号： H03G5/00
CPC分类号： G10L25/90
摘要： Band-pass filter suppresses frequency components of a sound signal that are lower than a low-side cutoff frequency and that are higher than a high-side cutoff frequency. Pitch detection section detects a pitch of the sound signal having been processed by the band-pass filter. Target setting section variably sets a low-side target value lower than the pitch detected by the pitch detection section and a high-side target value higher than the detected pitch. Filter control section causes the low-side cutoff frequency to approach the low-side target value over time and causes the high-side cutoff frequency to approach the high-side target value over time. In this way, a pass band of the band-pass filter can be smoothly variably controlled in accordance with pitch change of the sound signal that is an object of pitch detection.
摘要翻译：带通滤波器抑制低于低侧截止频率并且高于高侧截止频率的声音信号的频率分量。间距检测部检测已经由带通滤波器处理的声音信号的音调。目标设定部可变地设定低于由音调检测部检测出的音调的低侧目标值和高于检测到的音高的高侧目标值。滤波器控制部分使低端截止频率随着时间推移接近低侧目标值，并使高侧截止频率随时间接近高边目标值。以这种方式，可以根据作为音调检测对象的声音信号的音调变化来平滑地可变地控制带通滤波器的通带。

10. 发明申请

US20100119082A1 Pitch Detection Apparatus and Method 有权
标题翻译：间距检测装置及方法
公开(公告)号：US20100119082A1
公开(公告)日：2010-05-13
申请号：US12616702
申请日：2009-11-11
申请人： Takayasu Kondo , Kiyoto Kuroiwa
发明人： Takayasu Kondo , Kiyoto Kuroiwa
IPC分类号： H03G5/00
CPC分类号： G10L25/90
摘要： Band-pass filter suppresses frequency components of a sound signal that are lower than a low-side cutoff frequency and that are higher than a high-side cutoff frequency. Pitch detection section detects a pitch of the sound signal having been processed by the band-pass filter. Target setting section variably sets a low-side target value lower than the pitch detected by the pitch detection section and a high-side target value higher than the detected pitch. Filter control section causes the low-side cutoff frequency to approach the low-side target value over time and causes the high-side cutoff frequency to approach the high-side target value over time. In this way, a pass band of the band-pass filter can be smoothly variably controlled in accordance with pitch change of the sound signal that is an object of pitch detection.
摘要翻译：带通滤波器抑制低于低侧截止频率并且高于高侧截止频率的声音信号的频率分量。间距检测部检测已经由带通滤波器处理的声音信号的音调。目标设定部可变地设定低于由音调检测部检测出的音调的低侧目标值和高于检测到的音高的高侧目标值。滤波器控制部分使低端截止频率随着时间推移接近低侧目标值，并使高侧截止频率随时间接近高边目标值。以这种方式，可以根据作为音调检测对象的声音信号的音调变化来平滑地可变地控制带通滤波器的通带。

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