公开(公告)号：US07822193B2

公开(公告)日：2010-10-26

申请号：US11083469

申请日：2005-03-18

Applicant: Yuriy Zakharov ,  Timothy Conrad Tozer

Inventor： Yuriy Zakharov ,  Timothy Conrad Tozer

IPC: H04M9/08

CPC classification number: H04M9/082

Abstract: A method and apparatus for producing an estimate of the acoustic response an environment. The method comprises receiving a first signal, and a second signal including a part of the first signal. The first and second signals are combined to produce a third signal. The first signal is combined with itself to produce a fourth signal. A plurality of weighted means of said third signal are computed and summed to produce a plurality of first summations. A plurality of weighted means of said fourth signal are computed and summed to produce a plurality of second summations. Said estimate is generated from said first and second summations.

Abstract translation: 一种用于产生对环境的声学响应的估计的方法和装置。 该方法包括接收第一信号和包括第一信号的一部分的第二信号。 第一和第二信号被组合以产生第三信号。 第一信号与其自身组合以产生第四信号。 计算所述第三信号的多个加权装置并相加以产生多个第一和。 计算所述第四信号的多个加权装置并相加以产生多个第二和。 所述估计是从所述第一和第二求和产生的。

公开(公告)号：US20060210056A1

公开(公告)日：2006-09-21

申请号：US11083469

申请日：2005-03-18

Applicant: Yuriy Zakharov ,  Timothy Tozer

Inventor： Yuriy Zakharov ,  Timothy Tozer

IPC: H04M9/08

CPC classification number: H04M9/082

Abstract: A method and apparatus for producing an estimate of the acoustic response an enviroment. The method comprises receiving a first signal, and a second signal including a part of the first signal. The first and second signals are combined to produce a third signal. The first signal is combined with itself to produce a fourth signal. A plurality of weighted means of said third signal are computed and summed to produce a plurality of first summations. A plurality of weighted means of said fourth signal are computed and summed to produce a plurality of second summations. Said estimate is generated from said first and second summations.

Abstract translation: 一种用于产生声学响应估计的环境的方法和装置。 该方法包括接收第一信号和包括第一信号的一部分的第二信号。 第一和第二信号被组合以产生第三信号。 第一信号与其自身组合以产生第四信号。 计算所述第三信号的多个加权装置并相加以产生多个第一和。 计算所述第四信号的多个加权装置并相加以产生多个第二和。 所述估计是从所述第一和第二求和产生的。

公开(公告)号：US06782095B1

公开(公告)日：2004-08-24

申请号：US09355394

申请日：1999-07-27

Applicant: Michael Leong ,  Yuriy Zakharov ,  Sergey Fedorov ,  Galina Titova

Inventor： Michael Leong ,  Yuriy Zakharov ,  Sergey Fedorov ,  Galina Titova

IPC: H04M300

CPC classification number: G06F17/141 ,  H04Q1/46

Abstract: A general purpose network tone detection method and apparatus that allows the precise and accurate recognition of North American tones (MF, DTMF (Dual-Tone Multifrequency), and CPT (Call Progress Tones)) and international MF-R2 tones as well as taking into consideration other common tones such as Calling Card Service Prompt and Recall Dial. Through the use of the Discrete Fourier Transform (DFT) on small time windows and by providing phase continuity between these windows, the results of the successive DFTs may be combined and processed by a second DFT computation. This second DFT allows higher frequency resolution without requiring the re-computation of the DFT from the time samples. The resulting effect is a tone receiver with both high time and frequency resolution which consequently leads to robust and accurate tone recognition systems conforming even to the most stringent specification while maintaining low computational requirements.

Abstract translation: 一种通用网络音检测方法和装置，允许精确和准确地识别北美音调（MF，DTMF（双音多频）和CPT（呼叫进程音））和国际MF-R2音调以及接收 考虑其他常见音调，如呼叫卡服务提示和回拨。 通过在小时间窗口上使用离散傅立叶变换（DFT）并且通过在这些窗口之间提供相位连续性，可以通过第二DFT计算来组合和处理连续的DFT的结果。 该第二个DFT允许更高的频率分辨率，而不需要从时间样本重新计算DFT。 所产生的效果是具有高时间和频率分辨率的音调接收器，因此导致鲁棒和准确的音调识别系统，甚至符合最严格的规范，同时保持较低的计算要求。