公开(公告)号：US06741706B1

公开(公告)日：2004-05-25

申请号：US09647260

申请日：2000-12-22

申请人： David Stanley McGrath ,  Adam Richard McKeag ,  Glenn Norman Dickins ,  Richard James Cartwright ,  Andrew Peter Reilly

发明人： David Stanley McGrath ,  Adam Richard McKeag ,  Glenn Norman Dickins ,  Richard James Cartwright ,  Andrew Peter Reilly

IPC分类号： H04B500

CPC分类号： H04S3/004 ,  H04S7/305 ,  H04S2400/01 ,  H04S2420/01

摘要： A method of processing a series of input audio signals representing a series of virtual audio sound sources placed at predetermined positions around a listener to produce a reduced set of audio output signals for playback over speaker devices placed around a listener, the method comprising the steps of: (a) for each of the input audio signals and for each of the audio output signals: (i) convolving the input audio signals with an initial head portion of a corresponding impulse response mapping substantially the initial sound and early reflections for an impulse response of a corresponding virtual audio source to a corresponding speaker device so as to form a series of initial responses; (b) for each of the input audio signals and for each of the audio output signals: (i) forming a combined mix from the audio input signals; and (ii) forming a combined convolution tail from the tails of the corresponding impulse responses; (iii) convolving the combined mix with the combined convolution tail to form a combined tail response; (c)for each of the audio output signals: (i) combining a corresponding series of initial responses and a corresponding combined tail response to form the audio output signal.

摘要翻译： 一种处理一系列输入音频信号的方法，所述一系列输入音频信号表示放置在收听者周围的预定位置处的一系列虚拟音频声源，以产生用于在围绕收听者放置的扬声器装置上重放的音频输出信号的减少集合，所述方法包括以下步骤： ：（a）对于每个输入音频信号和每个音频输出信号：（i）将输入音频信号与相应的脉冲响应的初始头部进行卷积，基本上映射脉冲响应的初始声音和早期反射 相应的虚拟音频源到相应的扬声器装置，以便形成一系列初始响应; （b）对于每个输入音频信号和每个音频输出信号：（i）从音频输入信号形成组合的混合; 和（ii）从相应的脉冲响应的尾部形成一个组合卷积尾; （iii）将组合的混合物与组合的卷积尾部进行卷积以形成组合的尾部响应; （c）对于每个音频输出信号：（i）组合相应的一系列初始响应和相应的组合尾部响应以形成音频输出信号。

公开(公告)号：US07539319B2

公开(公告)日：2009-05-26

申请号：US11680238

申请日：2007-02-28

申请人： Glen Norman Dickins ,  David Stanley McGrath ,  Adam Richard McKeag ,  Richard James Cartwright ,  Andrew Peter Reilly

发明人： Glen Norman Dickins ,  David Stanley McGrath ,  Adam Richard McKeag ,  Richard James Cartwright ,  Andrew Peter Reilly

IPC分类号： H04R5/02

CPC分类号： H04S3/004 ,  H04S7/304 ,  H04S7/306 ,  H04S2400/01 ,  H04S2420/01

摘要： An apparatus for creating, utilizing a pair of oppositely opposed headphone speakers, the sensation of a sound source being spatially distant from the area between the pair of headphones, the apparatus comprising: (a) a series of audio inputs representing audio signals being projected from an idealised sound source located at a spatial location relative to the idealised listener; (b) a first mixing matrix means interconnected to the audio inputs and a series of feedback inputs for outputting a predetermined combination of the audio inputs as intermediate output signals; (c) a filter system of filtering the intermediate output signals and outputting filtered intermediate output signals and the series of feedback inputs, the filter system including separate filters for filtering the direct response and short time response and an approximation to the reverberant response, in addition to the feedback response filtering for producing the feedback inputs; and (d) a second matrix mixing means combining the filtered intermediate output signals to produce left and right channel stereo outputs.

公开(公告)号：US07536021B2

公开(公告)日：2009-05-19

申请号：US11688716

申请日：2007-03-20

申请人： Glen Norman Dickins ,  David Stanley McGrath ,  Adam Richard McKeag ,  Richard James Cartwright ,  Andrew Peter Reilly

发明人： Glen Norman Dickins ,  David Stanley McGrath ,  Adam Richard McKeag ,  Richard James Cartwright ,  Andrew Peter Reilly

IPC分类号： H04R5/02

CPC分类号： H04S3/004 ,  H04S7/304 ,  H04S7/306 ,  H04S2400/01 ,  H04S2420/01

摘要： An apparatus for creating, utilizing a pair of oppositely opposed headphone speakers, the sensation of a sound source being spatially distant from the area between the pair of headphones, the apparatus comprising: (a) a series of audio inputs representing audio signals being projected from an idealised sound source located at a spatial location relative to the idealised listener; (b) a first mixing matrix means interconnected to the audio inputs and a series of feedback inputs for outputting a predetermined combination of the audio inputs as intermediate output signals; (c) a filter system of filtering the intermediate output signals and outputting filtered intermediate output signals and the series of feedback inputs, the filter system including separate filters for filtering the direct response and short time response and an approximation to the reverberant response, in addition to the feedback response filtering for producing the feedback inputs; and (d) a second matrix mixing means combining the filtered intermediate output signals to produce left and right channel stereo outputs.

摘要翻译： 一种用于创建利用一对相对的耳机扬声器的声源在空间上远离所述一对耳机之间的区域的装置，所述装置包括：（a）一系列音频输入，表示从 位于相对于理想听众的空间位置的理想化声源; （b）互连到音频输入端的第一混合矩阵装置和用于输出音频输入的预定组合作为中间输出信号的一系列反馈输入; （c）滤波器系统，对中间输出信号进行滤波并输出经滤波的中间输出信号和一系列反馈输入，该滤波器系统包括用于滤除直接响应和短时间响应的分离滤波器以及近似于混响响应 用于产生反馈输入的反馈响应滤波; 和（d）组合滤波的中间输出信号以产生左和右声道立体声输出的第二矩阵混合装置。

公开(公告)号：US06421697B1

公开(公告)日：2002-07-16

申请号：US09281769

申请日：1999-03-30

申请人： David Stanley McGrath ,  Andrew Peter Reilly

发明人： David Stanley McGrath ,  Andrew Peter Reilly

IPC分类号： G06F1715

CPC分类号： G06F17/15 ,  H03H17/0213

摘要： A method of performing a convolution of an input data stream, the method comprising the steps of: (a) transforming an initial series of input data values into the frequency domain to form initial frequency domain data values; (b) multiplying the frequency domain data values with a set of coefficients so as to form convolved frequency data; (c) transforming the convolved frequency data into a spatial domain so as to form an initial series of output data values; (d) performing steps (a) to (c) on a subsequent series of input data values of the input data stream so as to form a subsequent series of output data values; the subsequent series of input data values overlapping the initial series of input data values; and (e) cross fading overlapping portions of the initial and subsequent output data values.

摘要翻译： 一种执行输入数据流的卷积的方法，所述方法包括以下步骤：（a）将初始序列的输入数据值变换为频域以形成初始频域数据值; （b）将频域数据值与一组系数相乘以形成卷积频率数据; （c）将卷积的频率数据变换成空间域，以形成初始的输出数据值序列; （d）对输入数据流的后续一系列输入数据值执行步骤（a）至（c），以形成随后的一系列输出数据值; 随后的一系列输入数据值与初始系列的输入数据值重叠; 和（e）初始和后续输出数据值的交叉衰落重叠部分。

公开(公告)号：US07447722B2

公开(公告)日：2008-11-04

申请号：US10492801

申请日：2002-11-11

申请人： David S. McGrath ,  Andrew Peter Reilly

发明人： David S. McGrath ,  Andrew Peter Reilly

IPC分类号： G06F17/10

CPC分类号： G06F17/15

摘要： A method for applying a computation utilizing a processor (112) capable of accessing an on-chip memory (114) and data from an off-chip source (116), the method comprising the iterative steps of retrieving at the on-chip memory (114) successive frames of input data from the off-chip source (116); computing from a current input frame of data (30) available in the on-chip memory current result elements for completing a current output frame of results (33, 34, 35), and pre-computing from the current frame of input data future result elements for contributing to at least one future output frame of results.

摘要翻译： 一种利用能够访问片上存储器（114）的处理器（112）和来自芯片外源（116）的数据来应用计算的方法，所述方法包括迭代步骤，以在片上存储器 114）来自片外源（116）的连续帧的输入数据; 从可用于片上存储器当前结果元素的数据（30）的当前输入帧计算以完成当前输出结果帧（33,34,35），以及从当前输入数据帧的未来计算结果 促成至少一个未来输出结果框架的元素。

公开(公告)号：US07949141B2

公开(公告)日：2011-05-24

申请号：US10970123

申请日：2004-10-21

申请人： Andrew Peter Reilly ,  Adam Richard McKeag

发明人： Andrew Peter Reilly ,  Adam Richard McKeag

IPC分类号： H03G3/00

CPC分类号： H04S7/306 ,  G10H1/0091 ,  G10H1/125 ,  G10H2210/281 ,  G10H2210/301 ,  G10K15/12 ,  H04S2400/01

摘要： A method, an apparatus, and a software product to process a plurality of input audio signals. The apparatus accepts a plurality of input signals and includes a multi-input, multi-output reverberator arranged to generate a set of output signals including delayed reverberation components simulating the reverberations a listener is likely to hear in a listening environment. The apparatus further includes a multi-input, two-output filter accepting the outputs of the reverberator and the plurality of input terminals, providing outputs for the left and right ears, and configured to implement a set of head related transfer functions corresponding to a listening environment and a set of directions of a listener in the listening environment. The apparatus is such that a listener listening to the outputs through headphones has the sensation of listening to the plurality of input audio signals as if they are emanating from a plurality of loudspeakers spatially located in the listening environment at a corresponding plurality of directions.

摘要翻译： 一种用于处理多个输入音频信号的方法，装置和软件产品。 该装置接受多个输入信号，并且包括多输入多输出混响器，其被布置成产生一组输出信号，包括模拟听众在听音环境中可能听到的混响的延迟混响分量。 所述装置还包括接收所述混响器和所述多个输入端子的输出的多输入双输出滤波器，为所述左耳和右耳提供输出，并且被配置为实现与聆听对应的一组头部相关传输功能 环境和聆听环境中一组听众的方向。 该装置使得通过耳机收听输出的收听者具有听到多个输入音频信号的感觉，就好像它们是在相应的多个方向上从空间上位于收听环境中的多个扬声器发出的。