公开(公告)号：WO2011020106A1

公开(公告)日：2011-02-17

申请号：PCT/US2010/045644

申请日：2010-08-16

Applicant: THAT CORPORATION ,  MOSES, Robert, W. ,  TYLER, Les ,  HANNA, Christopher, M.

Inventor： MOSES, Robert, W. ,  TYLER, Les ,  HANNA, Christopher, M.

IPC: H03G1/00 ,  H03G3/00

CPC classification number: H03G1/0088 ,  H03G3/001

Abstract: A digitally-controlled analog gain circuit supports a plurality of gain settings in which gain changes are made from a first setting to a new setting in response to a clocking signal. Large changes in gain are interpolated in small gain steps or increments. The clocking signal can be generated by an oscillator, or as a sequence of pulses output by a zero crossing detector. The gain circuit can apply positive gain to the signal. Alternatively, the gain circuit can apply a negative gain (attenuation) to the signal. The clocking signal can be provided in a pseudo-randomized manner to minimize unwanted signal effects such as discernable sound transients.

Abstract translation: 数字控制的模拟增益电路支持多个增益设置，其中响应于时钟信号，增益从第一设置改变到新的设置。 以小的增益步长或增量内插增益的大的变化。 时钟信号可以由振荡器产生，或者作为由过零检测器输出的脉冲序列。 增益电路可以对信号施加正增益。 或者，增益电路可以对信号施加负增益（衰减）。 可以以伪随机方式提供时钟信号以最小化不期望的信号效应，例如可识别的声音瞬态。

公开(公告)号：WO1997047102A1

公开(公告)日：1997-12-11

申请号：PCT/US1997009493

申请日：1997-06-02

Applicant: THAT CORPORATION

Inventor： THAT CORPORATION ,  HANNA, Christopher, M.

IPC: H04H05/00

CPC classification number: H04H20/88 ,  G10L19/008 ,  H04N5/602 ,  H04N7/06 ,  H04R5/04 ,  H04S5/02

Abstract: A BTSC encoder (200) includes a left digital high pass filter (212) for receiving a digital left channel audio signal (L) and generating a digital left filtered signal; a right digital high pass filter (214) for receiving a digital right channel audio signal (R) and generating a digital right filtered signal; a matrix includes an adder (216) for summing the digital left and right filtered signals and generating a digital sum signal (L+R), and including a subtractor (218) for subtracting one of the digital left and right filtered signals from the other of the digital left and right filtered signals and generating a digital difference signal (L-R); a difference channel processor (230) for digitally processing the digital difference signal (L-R); and a sum channel processor (220) for digitally processing the digital sum signal (L+R).

Abstract translation: BTSC编码器（200）包括用于接收数字左声道音频信号（L）并产生数字左滤波信号的左数字高通滤波器（212） 用于接收数字右声道音频信号（R）并产生数字右滤波信号的右数字高通滤波器（214） 矩阵包括用于对数字左和右滤波信号求和并产生数字和信号（L + R）的加法器（216），并且包括用于从另一个中减去数字左和右滤波信号之一的减法器（218） 数字左和右滤波信号并产生数字差分信号（LR）; 用于对数字差分信号（L-R）进行数字处理的差分信道处理器（230）; 以及用于数字处理数字和信号（L + R）的和信道处理器（220）。

公开(公告)号：WO2010057134A1

公开(公告)日：2010-05-20

申请号：PCT/US2009/064654

申请日：2009-11-16

Applicant: THAT CORPORATION ,  HANNA, Christopher, M. ,  BENULIS, Gregory ,  SKINNER, Scott

Inventor： HANNA, Christopher, M. ,  BENULIS, Gregory ,  SKINNER, Scott

IPC: H04R3/00 ,  H04R5/04 ,  H04S1/00

CPC classification number: H04R5/04 ,  H03G3/3005 ,  H03G3/3089 ,  H03G3/341 ,  H04R3/007 ,  H04R2430/01 ,  H04S1/00

Abstract: A disclosed system and method dynamically controls the perceived volume of a stereo audio program including left and right channel signals. The system comprises: a dynamic volume control configured and arranged so as to maintain a perceived constant volume level of the stereo audio program; and an excessive spatial processing protection processor configured and arranged for controlling the level of a difference signal, created as a function of the right channel signal subtracted from the left channel signal (L-R), relative to the level of a sum signal, created as a function of the right channel signal plus the left channel signal;; wherein the excessive spatial processing protection processor processes the audio signals so as to control the difference (L-R) signal relative to the sum (L+R) signal. A system and method are also provided for dynamically controlling the perceived volume of a stereo audio program including left and right channel signals, comprising: a dynamic volume control configured and arranged so as to maintain a perceived constant volume level of the stereo audio program; and a program change detector configured and arranged to provide a program change signal indicating that the volume of the left and right channel signals has dropped below a threshold level for at least a threshold time period so as to anticipate a possible change in the sound level of the left and right channel signals; wherein the dynamic volume control is responsive to the program change signal.

Abstract translation: 所公开的系统和方法动态地控制包括左和右声道信号的立体声音频节目的感知音量。 该系统包括：动态音量控制，其配置和布置成保持立体声音频节目的感知恒定音量; 以及过度的空间处理保护处理器，其被配置和布置成用于控制作为根据左信道信号（LR）减去的右信道信号的函数产生的差分信号的电平，相对于被创建为 右声道信号加上左声道信号的功能; 其中过多的空间处理保护处理器处理音频信号以便控制相对于和（L + R）信号的差值（L-R）信号。 还提供了一种系统和方法，用于动态地控制包括左和右声道信号的立体声音频节目的感知音量，包括：动态音量控制，其被配置和布置成保持立体声音频节目的感知恒定音量; 以及程序改变检测器，被配置和布置成提供指示左右声道信号的音量已经降至阈值水平以下的至少一个阈值时间段的节目改变信号，以便预测声源水平的可能变化 左右声道信号; 其中所述动态音量控制响应于所述程序改变信号。

公开(公告)号：WO2010057133A1

公开(公告)日：2010-05-20

申请号：PCT/US2009/064653

申请日：2009-11-16

Applicant: THAT CORPORATION ,  HANNA, Christopher, M. ,  BENULIS, Gregory

Inventor： HANNA, Christopher, M. ,  BENULIS, Gregory

IPC: H04R3/00 ,  H04R5/04 ,  H03G3/20 ,  H03G3/32 ,  H04S1/00

CPC classification number: H04R5/04 ,  H03G3/3005 ,  H03G3/3089 ,  H03G3/341 ,  H04R3/007 ,  H04R2430/01 ,  H04S1/00

Abstract: A disclosed system and method dynamically controls the perceived volume of a stereo audio program including left and right channel signals. The system comprises: a dynamic volume control configured and arranged so as to maintain a perceived constant volume level of the stereo audio program; and an excessive spatial processing protection processor configured and arranged for controlling the level of a difference signal, created as a function of the right channel signal subtracted from the left channel signal (L-R), relative to the level of a sum signal, created as a function of the right channel signal plus the left channel signal;; wherein the excessive spatial processing protection processor processes the audio signals so as to control the difference (L-R) signal relative to the sum (L+R) signal. A system and method are also provided for dynamically controlling the perceived volume of a stereo audio program including left and right channel signals, comprising: a dynamic volume control configured and arranged so as to maintain a perceived constant volume level of the stereo audio program; and a program change detector configured and arranged to provide a program change signal indicating that the volume of the left and right channel signals has dropped below a threshold level for at least a threshold time period so as to anticipate a possible change in the sound level of the left and right channel signals; wherein the dynamic volume control is responsive to the program change signal.

Abstract translation: 所公开的系统和方法动态地控制包括左声道信号和右声道信号的立体声音频节目的感知音量。 该系统包括：动态音量控制器，被配置和布置为保持立体声音频节目的感知的恒定音量级别; 以及过度空间处理保护处理器，被配置和布置用于控制作为从左声道信号（LR）中减去的右声道信号的函数而产生的差信号的电平相对于和信号的电平，所述和信号被创建为 右声道信号加左声道信号的功能;; 其中所述过度空间处理保护处理器处理所述音频信号以便相对于所述总和（L + R）信号控制所述差值（L-R）信号。 还提供了一种用于动态地控制包括左和右声道信号的立体声音频节目的感知音量的系统和方法，包括：动态音量控制器，被配置和布置为保持立体声音频节目的感知的恒定音量水平; 以及节目改变检测器，其被配置和布置为提供节目改变信号，所述节目改变信号指示左右声道信号的音量已经下降到阈值水平以下至少阈值时间段，以便预测 左右声道信号; 其中动态音量控制响应于节目改变信号。