公开(公告)号：US20140244273A1

公开(公告)日：2014-08-28

申请号：US14191241

申请日：2014-02-26

申请人： Jean Laroche ,  David P. Rossum

发明人： Jean Laroche ,  David P. Rossum

IPC分类号： G06F3/16 ,  G10L15/22

CPC分类号： G06F3/167 ,  G06F1/3206 ,  G06F1/3234 ,  G10L15/22 ,  G10L17/00 ,  G10L25/78 ,  G10L2015/223 ,  H04M1/271 ,  H04M2250/74

摘要： Systems and methods for voice-controlled communication connections are provided. An example system includes a mobile device being operated consecutively in listen, wakeup, authentication, and connect modes. Each of subsequent modes consumes more power than a preceding mode. The listen mode consumes less than 5 mW. In the listen mode, the mobile device listens for an acoustic signal, determines whether the acoustic signal includes voice, and upon the determination, selectively enters the wakeup mode. In the wakeup mode, the mobile device determines whether the acoustic signal includes a spoken word and, upon the determination, enters the authentication mode. In authentication mode, the mobile device identifies a user using the spoken command and, upon the identification, enters the connect mode. In the connect mode, the mobile device receives an acoustic signal, determines whether the acoustic signal includes a spoken command and performs one or more operations associated with the spoken command.

摘要翻译： 提供了用于语音控制通信连接的系统和方法。 示例系统包括在监听，唤醒，认证和连接模式中连续操作的移动设备。 每个后续模式消耗比前一模式更多的功率。 听模式消耗小于5 mW。 在监听模式下，移动设备侦听声信号，确定声信号是否包括声音，并且在确定时，选择性地进入唤醒模式。 在唤醒模式中，移动设备确定声信号是否包括口语字，并且在确定时，进入认证模式。 在认证模式下，移动设备使用口头命令识别用户，并且在识别时进入连接模式。 在连接模式中，移动设备接收声信号，确定声信号是否包括口令命令，并且执行与口语命令相关联的一个或多个操作。

公开(公告)号：US07280878B1

公开(公告)日：2007-10-09

申请号：US09427815

申请日：1999-10-27

申请人： David P. Rossum

发明人： David P. Rossum

IPC分类号： G06F17/00 ,  G06F17/17 ,  H03M7/00

CPC分类号： H04L25/05 ,  H03H17/0294 ,  H03H17/0455 ,  H03H17/0685 ,  H03H2017/0472

摘要： A method and a computer program product for sample rate conversion that features distributive or hybrid filtering to reduce unwanted artifacts, such as aliasing and the computational requirements to avoid the aforementioned artifacts. The method includes receiving, at a first sample rate, a plurality of data points, associated with a first signal, operating on the plurality of data points to associate the signal with a predetermined set of parameters, with the set of parameters including a first transition band having an image associated therewith; and varying the sample rate associated with the first signal by interpolation with an interpolator having associated therewith a second transition band, with the width associated with the second transition band being a function of a spectral separation between the first transition band and its image, wherein a second signal is produced having a sequence of data samples approximating the first signal.

摘要翻译： 一种用于采样率转换的方法和计算机程序产品，其特征在于分布或混合滤波以减少不需要的伪像，例如混叠和避免上述伪像的计算要求。 该方法包括以第一采样速率接收与第一信号相关联的多个数据点，操作多个数据点以将信号与预定参数集合相关联，该参数组包括第一转换 具有与其相关联的图像; 以及通过具有与其相关联的内插器的插值来改变与第一信号相关联的采样率，第二过渡带与第二过渡频带相关联的宽度是第一过渡频带和其图像之间的频谱间隔的函数，其中a 产生具有接近第一信号的数据样本序列的第二信号。

公开(公告)号：US6138207A

公开(公告)日：2000-10-24

申请号：US971238

申请日：1997-11-15

申请人： David P. Rossum

发明人： David P. Rossum

IPC分类号： G10H7/02 ,  G10H7/08 ,  G10H7/10

CPC分类号： G10H7/02 ,  G10H7/08 ,  G10H2230/031 ,  G10H2240/275

摘要： A cache memory is updated with audio samples in a manner which minimizes system bus bandwidth and cache size requirements. The end of a loop is used to truncate a normal cache request to exactly what is needed. A channel with a loopEnd in a request will be given higher priority in a two-stage priority scheme. The requested data is conformed by trimming to the minimum data block size of the bus, such a doubleword for a PCI bus. The audio data written into the cache can be shifted on a byte-wise basis, and unneeded bytes can be blocked and not written. Request data for which a bus request has been issued can be preempted by request data attaining a higher priority before a bus grant is received.

摘要翻译： 以最小化系统总线带宽和高速缓存大小要求的方式，利用音频采样更新高速缓冲存储器。 一个循环的结尾用于截断一个正常的缓存请求到正是所需要的。 在两阶段优先级方案中，在请求中具有loopEnd的信道将被赋予更高的优先级。 所请求的数据通过修剪到总线的最小数据块大小（例如PCI总线的双字）来实现。 写入高速缓存的音频数据可以按字节方式移位，并且不需要的字节可以被阻塞而不被写入。 发送总线请求的请求数据可以在接收到总线授权之前获得更高优先级的请求数据被抢占。

公开(公告)号：US6092126A

公开(公告)日：2000-07-18

申请号：US969312

申请日：1997-11-13

申请人： David P. Rossum

发明人： David P. Rossum

IPC分类号： G06F5/06 ,  G06F13/00

CPC分类号： G06F5/06 ,  G06F2205/061

摘要： An asynchronous sample rate tracker with rapid acquisition and good steady state performance is provided. In one embodiment, dual tracking loops are used to control reading from a FIFO sample buffer and generation of a ratio of source and local sampling rates. One tracking loop is used for rapid acquisition when the buffer is either empty or full with another tracking loop being used for steady-state operation. The steady-state tracking loop incorporates a low-pass filter to remove the effects of momentary variations in source sampling rates.

摘要翻译： 提供了具有快速采集和良好稳态性能的异步采样率跟踪器。 在一个实施例中，双跟踪环路用于控制来自FIFO采样缓冲器的读取以及源和本地采样率的比率的产生。 当缓冲器为空或满时，一个跟踪环用于快速采集，另一个跟踪环用于稳态操作。 稳态跟踪回路包含一个低通滤波器，以消除源采样率瞬间变化的影响。

公开(公告)号：US5928342A

公开(公告)日：1999-07-27

申请号：US887100

申请日：1997-07-02

申请人： David P. Rossum ,  Jay Scott Fuller

发明人： David P. Rossum ,  Jay Scott Fuller

IPC分类号： G06F3/16 ,  G06F9/38 ,  G06F15/78 ,  G10H1/02 ,  G10K15/12 ,  G06F13/14

CPC分类号： G06F3/16 ,  G06F15/7842 ,  G06F9/3824

摘要： A sound processor integrated on a single chip with multiple digital sound sample stream inputs. Each input is independently connected to separate ports of a multi-port memory. The architecture allows multiple, asynchronous digital sound sample streams to be concurrently loaded into the memory without requiring synchronization to any particular input stream.

摘要翻译： 集成在具有多个数字声音采样流输入的单个芯片上的声音处理器。 每个输入独立地连接到多端口存储器的分离端口。 该架构允许将多个异步数字声音采样流同时加载到存储器中，而不需要与任何特定的输入流进行同步。

公开(公告)号：US5925841A

公开(公告)日：1999-07-20

申请号：US903329

申请日：1997-07-29

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.

公开(公告)号：US5763800A

公开(公告)日：1998-06-09

申请号：US514788

申请日：1995-08-14

申请人： David P. Rossum ,  Michael Guzewicz ,  Robert S. Crawford ,  Matthew F. Williams ,  Donald F. Ruffcorn

发明人： David P. Rossum ,  Michael Guzewicz ,  Robert S. Crawford ,  Matthew F. Williams ,  Donald F. Ruffcorn

IPC分类号： G10H1/043 ,  G10H1/00 ,  G10H1/053 ,  G10H1/24 ,  G10H7/00 ,  G10H7/02 ,  G10H1/02

CPC分类号： G10H1/0058 ,  G10H1/24 ,  G10H7/02 ,  G10H2210/201 ,  G10H2210/295 ,  G10H2210/331

摘要： An audio data format in which an instrument is described using a combination of sound samples and articulation instructions which determine modifications made to the sound sample is provided. The instruments form a first, initial layer, with a second layer having presets which can user defined to provide additional articulation instructions which can modify the articulation instructions at the instrument level. The articulation instructions are specified using various parameters. The present invention provides a format in which all of the parameters are specified in units which relate to a physical phenomena, and thus are not tied to any particular machine for creating or playing the audio samples. The articulation parameters include generators and modulators, which provide a connection between a real-time signal and a generator. The parameter units are specified in perceptually additive units, to make the data portable and easily edited. New units are defined to give perceptual additive parameters throughout.

摘要翻译： 提供了一种音频数据格式，其中使用声音样本和确定对声音样本的修改的发音指令的组合来描述乐器。 仪器形成第一初始层，第二层具有可以由用户定义的预设，以提供附加的铰接指令，其可以在仪器级别修改关节指令。 使用各种参数指定关节指令。 本发明提供了一种格式，其中所有参数以与物理现象相关的单元来指定，并且因此不与用于创建或播放音频样本的任何特定机器相关联。 发音参数包括发生器和调制器，其提供实时信号和发生器之间的连接。 参数单位以感性添加单位指定，使数据便于携带，易于编辑。 新单位被定义为全部给出感知加成参数。

公开(公告)号：US5170369A

公开(公告)日：1992-12-08

申请号：US576203

申请日：1990-08-29

申请人： David P. Rossum

发明人： David P. Rossum

IPC分类号： H03H17/02 ,  H03H17/04

CPC分类号： H03H17/0227 ,  H03H17/04

摘要： An improved dynamic digital IIR (Infinite Impulse Response) audio filter and method provides a remedy for the major problems in state of the art digital IIR filtering and dynamic digital filtering for audio. In particular, the required multiplier coefficient size is reduced, such that 16 bit coefficients are adequate for good frequency resolution. In addition, the data size of the multiplier is also reduced, to be similar to the input and output data resolution without inferior noise performance. Furthermore, the structure is easily modified to allow the fixing of the DC (Direct Current) gain of the IIR filter to unity regardless of coefficient choice, eliminating any problems with filter dynamic range at low frequency passbands. Additionally, a dynamic filter structure allows logarithmic filter sweeps and compresses the coefficients further down to as few as 8 bits with adequate resolution for audio throughout the band. The structure allows the alteration of sweep of the filter without excessive computation or the requirement to read the current sweep value.

摘要翻译： 改进的动态数字IIR（无限冲击响应）音频滤波器和方法为现有技术的数字IIR滤波和音频的动态数字滤波提供了一个补救措施。 特别地，减少了所需的乘数系数大小，使得16位系数足够用于良好的频率分辨率。 此外，乘法器的数据大小也减少，与输入和输出数据分辨率相似，无噪音性能较差。 此外，无论系数选择如何，该结构都易于修改，以允许将IIR滤波器的DC（直流）增益固定为1，消除了低频通带滤波器动态范围的任何问题。 此外，动态滤波器结构允许对数滤波器扫描，并将系数进一步降低到少至8位，并且在整个频带内具有足够的音频分辨率。 该结构允许过滤器的扫描改变，而不需要过多的计算或读取当前扫描值的要求。

公开(公告)号：US5072645A

公开(公告)日：1991-12-17

申请号：US462690

申请日：1990-01-11

申请人： David P. Rossum

发明人： David P. Rossum

IPC分类号： G10H1/08 ,  G10H1/18

CPC分类号： G10H1/08 ,  G10H1/187 ,  Y10S84/27

摘要： An output stage for a multitimbral electronic musical instrument providing automatic detection of the use of submix outputs is provided. The present invention allows the use of effects processors on selected timbres without the need for user intervention when the effects are connected or removed. The present invention also allows for use of such processors without an external mixboard.

摘要翻译： 提供了一种用于提供对混合输出的使用的自动检测的多电子电子乐器的输出级。 本发明允许在所选择的音色上使用效果处理器，而在连接或移除效果时不需要用户干预。 本发明还允许在没有外部混合板的情况下使用这种处理器。

公开(公告)号：US4404529A

公开(公告)日：1983-09-13

申请号：US221299

申请日：1980-12-30

申请人： David P. Rossum ,  Ronald N. Dow

发明人： David P. Rossum ,  Ronald N. Dow

IPC分类号： H03G5/00 ,  H03H11/12 ,  H03G5/22

CPC分类号： H03G5/00 ,  H03H11/1213

摘要： A lowpass filter circuit having an electronically controllable cutoff frequency and utilizing a feedback current mirror circuit as a variable impedance element. The filter circuit employs low noise, low distortion output circuitry and includes means for electronically controlling resonance.

摘要翻译： 一种低通滤波器电路，具有电子可控制的截止频率，并利用反馈电流镜电路作为可变阻抗元件。 滤波电路采用低噪声，低失真输出电路，并且包括电子控制谐振的装置。