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1. 发明授权

US4720866A Computerized stethoscopic analysis system and method 失效
标题翻译：电脑听诊分析系统及方法
公开(公告)号：US4720866A
公开(公告)日：1988-01-19
申请号：US778524
申请日：1985-09-20
申请人： Antonio L. Elias , Mark F. Davis
发明人： Antonio L. Elias , Mark F. Davis
IPC分类号： A61B7/04 , A61B7/00
CPC分类号： A61B7/04
摘要： This invention relates in general to a method and apparatus for identifying specific medical conditions from detected stethoscopic sounds. More particularly, the invention relates to the processing of such sounds electronically and the display of the time-variations of the spectral composition of such sounds. The invention is embodied in an accessory package designed to enable a host computer to perform computerized stethoscopic analysis.
摘要翻译：本发明一般涉及用于从检测到的听诊器声音识别特定医疗状况的方法和装置。更具体地说，本发明涉及电子地处理这些声音以及这种声音的频谱组成的时间变化的显示。本发明体现在设计成使得主机能够进行计算机化的听诊器分析的附件包中。

2. 发明授权

US09628934B2 Audio channel spatial translation 有权
公开(公告)号：US09628934B2
公开(公告)日：2017-04-18
申请号：US13139984
申请日：2009-12-16
申请人： Mark F. Davis
发明人： Mark F. Davis
IPC分类号： H04S5/02 , H04S3/00 , H04S3/02 , G10L19/008 , H04S5/00
CPC分类号： H04S5/005 , H04S3/02 , H04S2400/03
摘要： M audio input channels, each associated with a spatial direction, are translated to N audio output channels, each associated with a spatial direction, wherein M and N are positive whole integers, M is three or more, and N is three or more, by deriving the N audio output channels from the M audio input channels, wherein one or more of the M audio input channels is associated with a spatial direction other than a spatial direction with which any of the N audio output channels is associated, and at least one of the one or more of the M audio input channels is mapped to a respective set of at least three of the N output channels. At least three output channels of a set may be associated with contiguous spatial directions.

3. 发明授权

US5451954A Quantization noise suppression for encoder/decoder system 失效
标题翻译：编码器/解码器系统的量化噪声抑制
公开(公告)号：US5451954A
公开(公告)日：1995-09-19
申请号：US101887
申请日：1993-08-04
申请人： Mark F. Davis , Craig C. Todd , Grant A. Davidson , Stephen D. Vernon
发明人： Mark F. Davis , Craig C. Todd , Grant A. Davidson , Stephen D. Vernon
IPC分类号： H04B1/66 , H04N5/21 , H04N7/26 , H04N7/30 , H03M7/00
CPC分类号： H04B1/665 , H04N19/126 , H04N19/124 , H04N19/60 , H04N5/21
摘要： The invention relates in general to low bit-rate encoding and decoding of information such as audio information. More particularly, the invention relates to the suppression of quantizing noise which results from low bit-rate encoding and decoding of signal events such as transients. An encoder identifies intervals of an input signal in which a decoder is likely to generate audible artifacts caused by quantizing errors. Indications of these intervals are passed in the encoded signal to the decoder. The decoder uses these indications to eliminate quantizing artifacts by suppressing corresponding intervals in the output signal.
摘要翻译：本发明一般涉及诸如音频信息的信息的低比特率编码和解码。更具体地说，本发明涉及由诸如瞬变的信号事件的低比特率编码和解码产生的量化噪声的抑制。编码器识别输入信号的间隔，其中解码器可能产生由量化误差引起的可听见的伪像。这些间隔的指示在编码信号中传递给解码器。解码器使用这些指示通过抑制输出信号中的相应间隔来消除量化伪像。

4. 发明授权

US5400433A Decoder for variable-number of channel presentation of multidimensional sound fields 失效
标题翻译：多维声场信道演示可变数解码器
公开(公告)号：US5400433A
公开(公告)日：1995-03-21
申请号：US175051
申请日：1993-12-28
申请人： Mark F. Davis , Craig C. Todd
发明人： Mark F. Davis , Craig C. Todd
IPC分类号： H04B14/04 , H04H20/88 , H04S3/00 , H04S7/00 , G10L5/00
CPC分类号： H04S3/008
摘要： The invention relates to the reproduction of high-fidelity multi-dimensional sound fields intended for human hearing. More particularly, the invention relates to the decoding of signals representing such sound fields delivered by one or more delivery channels, but played back over a number of presentation channels which may differ from the number of delivery channels. In one embodiment, a subband decoder combines spectral information in the frequency domain prior to inverse filtering, thereby incurring implementation costs roughly proportional to the number of presentation channels rather than to the number of delivery channels.
摘要翻译：本发明涉及用于人类听觉的高保真多维声场的再现。更具体地说，本发明涉及对由一个或多个传送信道传送的表示这种声场的信号的解码，但是可以与传送信道的数量不同的多个呈现频道进行回放。在一个实施例中，子带解码器在反向滤波之前组合频域中的频谱信息，从而导致实质成本与呈现频道的数量大致成比例，而不是传送信道的数量。

5. 发明授权

US4539526A Adaptive signal weighting system 失效
标题翻译：自适应信号加权系统
公开(公告)号：US4539526A
公开(公告)日：1985-09-03
申请号：US462372
申请日：1983-01-31
申请人： Mark F. Davis
发明人： Mark F. Davis
IPC分类号： H04B1/62 , G11B5/027 , G11B20/04 , H03G5/16 , H03G5/18 , H03G9/02 , H04B1/64 , H03G3/20 , H03F3/68
CPC分类号： H03G9/025 , H03G5/165 , H03G5/18
摘要： An adaptive signal weighting system is disclosed for use in transmitting an electrical information signal of a predetermined bandwidth along a signal path. The system can be used to encode or decode the signal. The system comprises filter means disposed in the signal path for varying the gain impressed on the portion of the information signal within a first select spectral region within the preselected bandwidth. The gain is varied in response to and as a function of a first control signal. Means are provided means for generating the first control signal in response to and in accordance with the signal energy of the information signal substantially within at least a part of the first select spectral region. The system also comprises gain control means disposed in the signal path and coupled to the filter means for varying the signal gain impressed on the information signal substantially throughout the predetermined bandwidth, the signal gain varying in response to and as a function of a second control signal; and means for generating the second control signal in response to and as a function of the signal energy of the information signal within at least one other select spectral region of the information signal.
摘要翻译：公开了一种用于沿着信号路径发送预定带宽的电信息信号的自适应信号加权系统。该系统可用于对信号进行编码或解码。该系统包括设置在信号路径中的滤波器装置，用于改变在预选带宽内的第一选择频谱区域内的信息信号部分上的增益。响应于第一控制信号并且作为第一控制信号的函数，增益是变化的。提供装置，用于响应于并且根据信息信号的信号能量，基本上在第一选择光谱区域的至少一部分内产生第一控制信号。该系统还包括设置在信号路径中并被耦合到滤波器装置的增益控制装置，用于基本上在整个预定带宽内改变施加在信息信号上的信号增益，信号增益响应于第二控制信号而变化 ; 以及用于响应于信息信号的至少一个其他选择光谱区域内的信息信号的信号能量并根据信号信号的函数产生第二控制信号的装置。

6. 发明授权

US4503553A Loudspeaker system 失效
标题翻译：扬声器系统
公开(公告)号：US4503553A
公开(公告)日：1985-03-05
申请号：US500972
申请日：1983-06-03
申请人： Mark F. Davis
发明人： Mark F. Davis
IPC分类号： H04R3/00 , H04R1/22 , H04R1/26 , H04R1/40 , H04R3/04 , H04R3/12 , H04R3/14 , H04R5/02
CPC分类号： H04R1/227 , H04R1/26 , H04R1/403 , H04R3/04 , H04R3/14 , H04R5/02
摘要： The disclosure relates to an audio signal reproduction system having one or more of the following features: (1) a loudspeaker having (a) a flat frequency response and (b) a predetermined power response; (2) two loudspeakers adapted to be positioned relative to one another so that they reproduce a stereophonic image substantially independent of the listener's position along a listening line spaced from the loudspeakers and nonintersecting a line extending between the two speakers; (3) an improved cross-over network having a substantially constant input impedance as a function of frequency; (4) a power sensor for sensing the power applied to a transducer so that audio signals are transmitted over a first signal path through the system when the sensed power is above a predetermined minimum level, and over a second path when the sensed power falls below the minimum level; (5) a power monitoring circuit to prevent a loudspeaker driver from being overdriven; and (6) a circuit for substantially balancing the signal energy levels between two audio channels over a long period of time.
摘要翻译：本公开涉及具有以下特征中的一个或多个的音频信号再现系统：（1）具有（a）平坦频率响应和（b）预定功率响应的扬声器; （2）适于相对于彼此定位的两个扬声器，使得它们沿着与扬声器间隔开的聆听线基本上独立于收听者的位置再现立体声图像，并且不间断地在两个扬声器之间延伸的线; （3）具有作为频率的函数的基本上恒定的输入阻抗的改进的交叉网络; （4）功率传感器，用于感测施加到换能器的功率，使得当感测功率高于预定最小电平时，通过系统的第一信号路径传输音频信号，并且当感测功率低于第二路径时，通过第二路径最低水平; （5）用于防止扬声器驱动器过载的电力监控电路; 以及（6）用于在长时间内基本平衡两个音频通道之间的信号能级的电路。

7. 发明申请

US20170117964A1 Maintaining Network Connectivity During Network Upgrade 审中-公开
公开(公告)号：US20170117964A1
公开(公告)日：2017-04-27
申请号：US15299789
申请日：2016-10-21
申请人： Mark F. Davis
发明人： Mark F. Davis
IPC分类号： H04B10/2575 , H04B10/25 , H04B10/27
CPC分类号： H04B10/2575 , H04B10/2503 , H04B10/25751 , H04B10/25756 , H04B10/27 , H04B10/278
摘要： Embodiments disclosed herein include deploying a plurality of temporary pedestals at each of a plurality of termination points of an HFC network. Each temporary pedestal includes a coaxial cable interface for connecting subscribers served by the terminal point to the temporary pedestal and at least one optical fiber interface. Each temporary pedestal is communicatively coupled to an optical hub via a shared fiber or a dedicated fiber. The optical hub connects to upstream network infrastructure. At each termination point, subscribers are disconnected from an existing pedestal and connected to the temporary pedestal so that the subscribers can receive communications services via the temporary pedestal for the duration of a network upgrade.

8. 发明授权

US09343076B2 Methods and systems for generating filter coefficients and configuring filters 有权
标题翻译：用于生成滤波器系数和配置滤波器的方法和系统
公开(公告)号：US09343076B2
公开(公告)日：2016-05-17
申请号：US13983892
申请日：2012-02-08
申请人： Mark F. Davis
发明人： Mark F. Davis
IPC分类号： G10L19/00 , G10L19/04
CPC分类号： G10L19/04 , G10L19/0017
摘要： Methods for generating a palette of feedback (IIR) filter coefficient sets and using the palette to configure (e.g., adaptively update) a prediction filter which includes a feedback filter, and a system for performing any of the methods. Examples of the system include an encoder, including a prediction filter and configured to encode data indicative of a waveform signal (e.g., samples of an audio signal), and a decoder. In some embodiments, the prediction filter is included in an encoder operable to generate (and assert to a decoder) encoded data including filter coefficient data indicative of the selected IIR coefficient set with which the prediction filter was configured during generation of the encoded data. In some embodiments, the timing with which adaptive updating of prediction filter configuration occurs or is allowed to occur is constrained (e.g., to optimize efficiency of prediction encoding).
摘要翻译：用于生成反馈调色板（IIR）滤波器系数组并使用调色板来配置（例如，自适应地更新）包括反馈滤波器的预测滤波器的方法和用于执行任何方法的系统的方法。系统的示例包括编码器，包括预测滤波器并且被配置为对表示波形信号（例如，音频信号的样本）的数据和解码器进行编码。在一些实施例中，预测滤波器被包括在可操作以生成（并且向解码器断言）编码数据的编码数据中，所述编码数据包括指示在生成编码数据期间配置了预测滤波器的所选择的IIR系数组的滤波器系数数据。在一些实施例中，发生或允许发生预测过滤器配置的自适应更新的定时被限制（例如，以优化预测编码的效率）。

9. 发明申请

US20140119570A1 Equalization of Speaker Arrays 有权
标题翻译：扬声器阵列的均衡
公开(公告)号：US20140119570A1
公开(公告)日：2014-05-01
申请号：US14126070
申请日：2012-06-27
申请人： Mark F. Davis , Louise D. Fielder , Nicolas R. Tsingos , Charles Q. Robinson
发明人： Mark F. Davis , Louise D. Fielder , Nicolas R. Tsingos , Charles Q. Robinson
IPC分类号： H04R3/12
CPC分类号： H04R3/12 , H04R5/02 , H04R27/00 , H04R29/002 , H04R29/007 , H04S7/301
摘要： Methods and apparatus are described by which equalization and/or bass management of speakers in a sound reproduction system may be accomplished.
摘要翻译：描述了可以实现声音再现系统中的扬声器的均衡和/或低音管理的方法和装置。

10. 发明授权

US5632005A Encoder/decoder for multidimensional sound fields 失效
标题翻译：用于多维声场的编码器/解码器
公开(公告)号：US5632005A
公开(公告)日：1997-05-20
申请号：US487725
申请日：1995-06-07
申请人： Mark F. Davis , Craig C. Todd , Ray Milton Dolby
发明人： Mark F. Davis , Craig C. Todd , Ray Milton Dolby
IPC分类号： H04S3/00 , G10L5/00
CPC分类号： G10L19/008 , H04S3/008
摘要： An adaptive high-fidelity perceptual subband encoder for spatially directional multichannel audio signals, using a mixture of individual-channel subband coding with subband-steered composite-channel signal coding that combines the spectral components of the individual channel subbands selected for steering. The composite channel representation includes a subband steering control signal which either conveys the levels of the spectral components from all the steered channels, or represents the apparent directions (net directional vectors) of the spectral components from all the steered channels.
摘要翻译：一种用于空间定向多声道音频信号的自适应高保真感知子带编码器，其使用组合选择用于转向的各个信道子带的频谱分量的子频带子带编码与子带转向复合信道信号编码的混合。复合信道表示包括从所有转向信道传送频谱分量的级别或表示来自所有转向信道的频谱分量的表观方向（净方向向量）的子带导向控制信号。

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