公开(公告)号：US20040025675A1

公开(公告)日：2004-02-12

申请号：US10370328

申请日：2003-02-18

申请人： Yamaha Corporation

发明人： Hideo Miyazaki ,  Shinji Kishinaga ,  Youjiro Takabayashi

IPC分类号： G10H001/12

CPC分类号： G10H1/125 ,  G10H3/185 ,  G10H3/186 ,  G10H2250/115 ,  G10H2250/145 ,  Y10S84/09

摘要： A method is provided for designing an acoustic correction filter applicable to a stringed instrument, which is composed of a string member operable to undergo a vibration, a support member for supporting the string member, a body member responsive to the vibration transmitted through the support member for generating a natural sound and a mute attachment for muting the natural sound. The acoustic correction filter is operable when the natural sound is muted by the mute attachment for filtering a signal derived from the vibration so as to create an artificial sound instead of the muted natural sound. The method is carried out by the steps of acquiring a first sample signal from the vibration under a mute state, acquiring a second sample signal from the vibration under a free state, extracting a difference between the acquired first sample signal and the acquired second sample signal, and determining a correction characteristic of the acoustic correction filter based on the extracted difference such that the acoustic correction filter can filter the signal in accordance with the determined correction characteristic so as to create the artificial sound comparable to the natural sound.

摘要翻译： 提供了一种用于设计适用于弦乐器的声学校正滤光器的方法，所述弦乐器由可操作以进行振动的弦乐器构成，用于支撑所述弦乐器构件的支撑构件，响应于通过所述支撑构件传递的振动的主体构件 用于产生自然声音和静音附件以使自然声音静音。 声音校正滤波器可操作，当自然声音被静音附件静音时滤波来自振动的信号，以产生人造声音而不是静音的自然声音。 该方法通过以下步骤进行：从静止状态下的振动中获取第一采样信号，从空闲状态下的振动获取第二采样信号，提取所获取的第一采样信号和采集的第二采样信号之间的差 并且基于所提取的差异来确定声学校正滤波器的校正特性，使得声学校正滤波器可以根据所确定的校正特性对信号进行滤波，从而产生与自然声音相当的人造声音。

公开(公告)号：US06365816B1

公开(公告)日：2002-04-02

申请号：US09618963

申请日：2000-07-19

申请人： David P. Rossum

发明人： David P. Rossum

IPC分类号： G01H710

CPC分类号： G10H7/08 ,  G10H7/12 ,  G10H2230/031 ,  G10H2250/145 ,  G10H2250/545 ,  G10H2250/621

摘要： A digital sampling instrument for multi-channel interpolatative playback of digital audio data stored in a waveform memory provides improved interpolation of musical sounds by use of a cache memory.

公开(公告)号：US6137043A

公开(公告)日：2000-10-24

申请号：US187139

申请日：1998-11-06

申请人： David P. Rossum

发明人： David P. Rossum

IPC分类号： G10H7/08 ,  G10H7/12 ,  G10H7/10

CPC分类号： G10H7/08 ,  G10H7/12 ,  G10H2230/031 ,  G10H2250/145 ,  G10H2250/545 ,  G10H2250/621

摘要： A digital sampling instrument for multi-channel interpolatative playback of digital audio data stored in a waveform memory provides improved interpolation of musical sounds by use of a cache memory.

公开(公告)号：US5890119A

公开(公告)日：1999-03-30

申请号：US784798

申请日：1997-01-16

申请人： Norio Suzuki

发明人： Norio Suzuki

IPC分类号： G10H1/02 ,  G10H1/00 ,  G10H7/00 ,  G10H7/02 ,  G10H7/06 ,  G10K15/02 ,  G10L9/18

CPC分类号： G10H1/0041 ,  G10H7/006 ,  G10H7/06 ,  G10K15/02 ,  G10H2250/095 ,  G10H2250/145 ,  G10H2250/545

摘要： A digital sound generating system is provided which is capable of, in addition to generating a tone (first waveform data), recording or reproducing PCM sound data representing a human voice or sound of a music piece lasting for a relatively long time (second waveform data). To this end, in the tone generating process, tone waveform sample data is read out from a waveform RAM on the basis of address data given from an address calculating section and is then output as an analog signal via an interpolating section and D/A converter. In reproduction of PCM sound data, the PCM sound data supplied via a CPU interface is transferred using the waveform RAM as a buffer and is then supplied outside of the system through a same channel as in the tone generating process. In recording of PCM sound data, a high-frequency-component removing process is performed, by a filtering calculating section, on PCM sound data received via an A/D converter so as to prevent unwanted aliasing noise. The resultant filtered PCM sound data is then transferred using the waveform RAM as a buffer and output via the CPU interface.

摘要翻译： 提供了一种数字声音产生系统，除了生成音调（第一波形数据）之外，还能够记录或再现表示相当长时间的音乐的人声或声音的PCM声音数据（第二波形数据 ）。 为此，在乐音产生处理中，基于从地址计算部分给出的地址数据，从波形RAM读出乐音波形采样数据，然后经由内插部分和D / A转换器作为模拟信号输出 。 在PCM声音数据的再现中，通过CPU接口提供的PCM声音数据使用波形RAM作为缓冲器传送，然后通过与音调产生处理中相同的通道在系统外部提供。 在PCM声音数据的记录中，通过滤波计算部分，经由A / D转换器接收的PCM声音数据执行高频分量去除处理，以防止不想要的混叠噪声。 然后使用波形RAM作为缓冲器传送所得到的经滤波的PCM声音数据，并通过CPU接口输出。

公开(公告)号：US5025472A

公开(公告)日：1991-06-18

申请号：US198473

申请日：1988-05-25

申请人： Yasushi Shimizu ,  Fukushi Kawakami

发明人： Yasushi Shimizu ,  Fukushi Kawakami

IPC分类号： H04R3/00 ,  G10H1/00 ,  G10H1/12 ,  G10K15/00 ,  G10K15/10 ,  G10K15/12 ,  H04R3/02 ,  H04S7/00

CPC分类号： G10H1/125 ,  G10H1/0091 ,  G10K15/10 ,  G10H2210/281 ,  G10H2210/301 ,  G10H2250/115 ,  G10H2250/145 ,  H04S7/305 ,  Y10S84/26

摘要： A reverberation imparting device for electro-acoustically enhancing reverberation in acoustic space comprises a microphone disposed in the acoustic space, a loudspeaker disposed in the acoustic space for diffusing the sound picked up by the microphone, and feedback means comprising a signal processing circuit for electrically processing an electric signal corresponding to the sound picked up by the microphone, an output of the signal processing circuit being supplied to the loudspeaker. The microphone, feedback means and loudspeaker form a feedback loop. The signal processing circuit comprises a circuit for subjecting impulse responses of finite length to a convolution operation. Time axis of reflected sounds is extended and extension of reverberation time thereby is realized without depending upon loop gain. Density of reflected sounds is increased by subjecting impulse responses of finite length to a convolution operation whereby separation of reflected sounds is prevented.

摘要翻译： 用于在声学空间中增加声音增强混响的混响赋予装置包括设置在声学空间中的麦克风，设置在声学空间中用于扩散由麦克风拾取的声音的扬声器，以及反馈装置，包括用于电加工的信号处理电路 对应于由麦克风拾取的声音的电信号，信号处理电路的输出被提供给扬声器。 麦克风，反馈装置和扬声器形成反馈回路。 信号处理电路包括用于对有限长度的脉冲响应进行卷积运算的电路。 反射声音的时间轴被扩展，从而实现了混响时间的延长，而不依赖于环路增益。 通过使有限长度的脉冲响应经历卷积操作来增加反射声音的密度，从而防止反射声音的分离。

公开(公告)号：US07369663B2

公开(公告)日：2008-05-06

申请号：US10424045

申请日：2003-04-25

申请人： Satoshi Sekine

发明人： Satoshi Sekine

IPC分类号： H03G3/00 ,  G10H1/02 ,  G10H7/00

CPC分类号： G10H1/0091 ,  G10H2210/281 ,  G10H2210/301 ,  G10H2250/145

摘要： The present invention is directed to creating sound reverberation. In accordance with a preferred embodiment, an apparatus estimates an impulse response for use in reproduction of a sound in a desired acoustic space. In particular, the apparatus collects space information concerning an acoustic space and point information indicating positions of a sound generation and reception points in the acoustic space, estimates a set of acoustic ray paths of the sound traveling from the sound generation point to the sound reception point, acquires directivity information indicating an acoustic directivity of the sound generation point and the sound reception point, estimates an acoustic intensity of each acoustic ray path and weights each acoustic intensity by the acquired directivity information, and determines the impulse response based on directions of the respective acoustic ray paths toward the sound reception point and the weighed acoustic intensities of the respective acoustic ray paths.

摘要翻译： 本发明旨在产生声音混响。 根据优选实施例，设备估计用于在期望的声学空间中的声音的再现中使用的脉冲响应。 特别地，该装置收集关于声音空间的空间信息和表示声音空间中的声音发生和接收点的位置的点信息，估计从声音发生点传播到声音接收点的声音的一组声线路径 获取指示声音产生点和声音接收点的声学方向性的指向性信息，通过所获取的方向性信息估计每个声学射线路径的声学强度并对每个声学强度进行加权，并且基于相应的方向来确定脉冲响应 到声音接收点的声线路径和各个声线路径的称重声强度。

公开(公告)号：US20070237335A1

公开(公告)日：2007-10-11

申请号：US11401547

申请日：2006-04-11

申请人： Elizabeth O'Sullivan

发明人： Elizabeth O'Sullivan

IPC分类号： H03G3/00 ,  G10H1/02

CPC分类号： H04S7/00 ,  G10H2210/281 ,  G10H2250/111 ,  G10H2250/145 ,  G10H2250/531

摘要： A method and apparatus models with a digital computer the impulse response characteristics of an acoustic system (“room” for convenience), based upon a measured impulse response signal from the acoustic system. The steps of the method include: processing the measured impulse response signal by band-limited decimation in at least one band to obtain a band-limited, decimated signal (BLD signal); calculating with a digital computer, based on said BLD signal, a model impulse response of a rational polynomial form; and finding poles and zeros of said rational polynomial. In a preferred embodiment, the rational polynomial form is further simplified by removing a set of pole/zero pairs that meet a specified set of pair criteria.

摘要翻译： 基于来自声学系统的测量的脉冲响应信号，使用数字计算机的方法和装置模拟声学系统的脉冲响应特性（“方便的房间”）。 该方法的步骤包括：通过在至少一个频带中的频带限制抽取来处理所测量的脉冲响应信号，以获得带限制抽取信号（BLD信号）; 基于所述BLD信号，用数字计算机计算有理多项式的模型脉冲响应; 并找到所述有理多项式的极点和零点。 在一个优选实施例中，有理多项式通过去除满足特定组对标准的一组极点/零对来进一步简化。

公开(公告)号：US5698803A

公开(公告)日：1997-12-16

申请号：US636827

申请日：1996-04-23

申请人： David P. Rossum

发明人： David P. Rossum

IPC分类号： G10H7/08 ,  G10H7/12

CPC分类号： G10H7/08 ,  G10H7/12 ,  G10H2230/031 ,  G10H2250/145 ,  G10H2250/545 ,  G10H2250/621

摘要： A digital sampling instrument for multi-channel interpolatative playback of digital audio data stored in a waveform memory provides improved interpolation of musical sounds by use of a cache memory. The present invention includes a plurality of interpolator circuits utilizing a single waveform memory where each of the interpolator circuits produces a unique bus request signal which is responsive to a unique bus acknowledge signal to determine which of the interpolator circuits has control of the waveform memory at any given waveform memory cycle.

摘要翻译： 用于存储在波形存储器中的数字音频数据的多通道内插回放的数字采样仪器通过使用高速缓冲存储器来提供对音乐声音的改进的插值。 本发明包括利用单个波形存储器的多个内插器电路，其中每个内插器电路产生唯一的总线请求信号，其响应于唯一的总线确认信号，以确定哪个内插器电路具有任何波形存储器的控制 给定波形存储周期。

公开(公告)号：US5342990A

公开(公告)日：1994-08-30

申请号：US882178

申请日：1992-05-11

申请人： David P. Rossum

发明人： David P. Rossum

IPC分类号： G10H7/08 ,  G10H7/12 ,  G10H7/10

CPC分类号： G10H7/08 ,  G10H7/12 ,  G10H2230/031 ,  G10H2250/145 ,  G10H2250/545 ,  G10H2250/621

摘要： A digital sampling instrument for multi-channel interpolatative playback of digital audio data stored in a waveform memory provides improved interpolation of musical sounds by use of a cache memory. The present invention includes a plurality of interpolator circuits utilizing a single waveform memory where each of the interpolator circuits produces a unique bus request signal which is responsive to a unique bus acknowledge signal to determine which of the interpolator circuits has control of the waveform memory at any given waveform memory cycle.

摘要翻译： 用于存储在波形存储器中的数字音频数据的多通道内插回放的数字采样仪器通过使用高速缓冲存储器来提供对音乐声音的改进的插值。 本发明包括利用单个波形存储器的多个内插器电路，其中每个内插器电路产生唯一的总线请求信号，其响应于唯一的总线确认信号，以确定哪个内插器电路具有任何波形存储器的控制 给定波形存储周期。

公开(公告)号：US5317104A

公开(公告)日：1994-05-31

申请号：US996884

申请日：1992-12-28

申请人： David R. Frost

发明人： David R. Frost

IPC分类号： G10H1/00 ,  G10K15/08 ,  G10H1/02

CPC分类号： G10K15/08 ,  G10H1/0091 ,  G10H2210/291 ,  G10H2210/301 ,  G10H2250/145 ,  G10H2250/235 ,  G10H2250/531 ,  Y10S84/26

摘要： An electronic sound processor creates reverberation effects using a simulated impulse function. The simulated impulse response is generated by combining frequency bands of white noise. The power of each band decays exponentially in time. The time constants are generated from the characteristics of a real or imaginary listening space. A reverberated sound signal is generated from an original sound signal by convolution of the original signal and the simulated impulse response. The method can adapted to generated stereophonic signals and to generate a forward and inverse reverb effect using only one set of multiplications.

摘要翻译： 电子声音处理器使用模拟脉冲功能创建混响效果。 通过组合白噪声的频带来产生模拟脉冲响应。 每个乐队的力量在时间上呈指数级衰减。 时间常数是从真实或虚构的聆听空间的特征产生的。 通过原始信号和模拟脉冲响应的卷积，从原始声音信号产生混响的声音信号。 该方法可适用于产生立体声信号，并且仅使用一组乘法来产生正向和反向混响效应。