公开(公告)号：WO2017039429A1

公开(公告)日：2017-03-09

申请号：PCT/MY2015/000072

申请日：2015-08-28

Applicant: MOTOROLA SOLUTIONS, INC.

Inventor： ABDULLAH, Mohd Faisal ,  BARTELS, Peter J. ,  BURSAC, Marko

IPC: H03G3/00

CPC classification number: H03G3/002 ,  G06F1/3212 ,  G06F1/3234 ,  H03G3/007

Abstract: A method of controlling an electronic device having a battery and a speaker is disclosed. The method includes receiving an audio data signal, monitoring a battery-related parameter of the battery, determining whether the monitored battery-related parameter traverses a threshold, and bit-shifting the audio data signal based on the monitored battery- related parameter traversing the threshold. Also disclosed is an attenuator circuit for an electronic device having a battery.

Abstract translation: 公开了一种控制具有电池和扬声器的电子设备的方法。 该方法包括：接收音频数据信号，监测电池的电池相关参数，确定所监视的电池相关参数是否穿过阈值;以及基于所监视的电池相关参数遍历阈值对音频数据信号进行位移 。 还公开了一种具有电池的电子设备的衰减器电路。

公开(公告)号：WO2013089446A1

公开(公告)日：2013-06-20

申请号：PCT/KR2012/010824

申请日：2012-12-13

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： LEE, Jong-Woo

IPC: H03G3/20 ,  H03H11/12

CPC classification number: H03G3/002 ,  H03F3/45475 ,  H03F2203/45512 ,  H03F2203/45522 ,  H03G1/0088 ,  H03G3/001 ,  H03G9/20 ,  H03H11/1291

Abstract: A variable gain amplifier circuit is provided. The circuit includes an operational amplifier for amplifying and outputting an input signal according to a cutoff frequency and a gain, a feedback resistor for changing a first resistance according to a first digital control code value which determines the cutoff frequency, and an input resistor for changing a second resistance according to a second digital control code value which is determined based on a difference of the first digital control code value and a gain code value. The gain is determined by a ratio of the first resistance and the second resistance and linearly changes on a decibel (dB) basis according to the first digital control code value, the cutoff frequency is inversely proportional to the first resistance and linearly changes on a log scale, and the variable gain can be easily set using the control code.

Abstract translation: 提供可变增益放大器电路。 该电路包括用于根据截止频率和增益放大和输出输入信号的运算放大器，用于根据确定截止频率的第一数字控制码值改变第一电阻的反馈电阻器，以及用于改变 根据第一数字控制代码值和增益代码值的差值确定的第二数字控制代码值的第二电阻。 增益由第一电阻和第二电阻的比率确定，并根据第一数字控制码值以分贝（dB）为基准线性变化，截止频率与第一电阻成反比，并且在对数线性上变化 可以使用控制代码容易地设置可变增益。

公开(公告)号：WO2008047139A1

公开(公告)日：2008-04-24

申请号：PCT/GB2007/004006

申请日：2007-10-19

Applicant: CALREC AUDIO LTD ,  WARRINGTON, John Patrick

Inventor： WARRINGTON, John Patrick

IPC: H03G3/30 ,  H03G5/00 ,  H03H17/02

CPC classification number: H03H17/0294 ,  H03G3/002 ,  H03G5/005

Abstract: A digital signal processor for interpolating a gain(coef f icient) to be applied to a digital signal, the processor including: first memory means (12) for storing a target gain coefficient; second memory means (14) for storing a current gain coefficient; response determining means (12) for determining an output gain coefficient based on the target gain coefficient and the current gain coefficient; means for storing the output gain coefficient in the second memory means in place of the current gain coefficient, to be used as the current gain coefficient in subsequent operations. In this way, a gain coefficient interpolator can be implemented using hardware rather than the previous DSP software approach.

Abstract translation: 一种用于内插要施加到数字信号的增益（系数）的数字信号处理器，所述处理器包括：用于存储目标增益系数的第一存储装置（12） 用于存储电流增益系数的第二存储装置（14） 响应确定装置，用于基于所述目标增益系数和所述当前增益系数确定输出增益系数; 用于将输出增益系数存储在第二存储装置中以代替当前增益系数的装置，用作后续操作中的当前增益系数。 以这种方式，可以使用硬件而不是以前的DSP软件方法来实现增益系数内插器。

公开(公告)号：WO2003023961A1

公开(公告)日：2003-03-20

申请号：PCT/JP2002/009047

申请日：2002-09-05

Applicant: 酒井 康江 ,  小柳 裕喜生

Inventor： 小柳 裕喜生

IPC: H03H17/06

CPC classification number: H03G3/002 ,  H03H17/0219 ,  H03H17/06

Abstract: A filter circuit is composed of FIR filters, and the filter factor is of a symmetrical type, thereby realizing a linear phase characteristic and preventing phase distortion even if a desired frequency band is emphasized. The first filter factors of a low-pass filter are determined so that the first filter factors may be the terms of a sequence in which the sum of the terms is not zero, the sign of the sum of every other terms is the same as that of the other every other terms, and the sum of the every other terms is equal to that of the other every other terms. Thus, by only changing a part of the signs of the filter factors, second filter factors of a high-pass filter can be simply determined so that they may be the terms of a sequence in which the sum of the terms is zero, the sign of the sum of every other terms is opposite to that of the other every other terms, and the absolute value of the sum of the every other terms is equal to that of the other every other terms.

Abstract translation: 滤波器电路由FIR滤波器构成，滤波器因子是对称型，从而实现线性相位特性，并且即使强调期望的频带也能防止相位失真。 确定低通滤波器的第一滤波器因子，使得第一滤波器因子可以是术语的和不为零的序列的项，每个其他项的和的符号与 的其他条款，其他条款的总和等于其他条款的总和。 因此，通过仅改变滤波器因子的一部分符号，可以简单地确定高通滤波器的第二滤波器因子，使得它们可以是项的和为零的序列的项，符号 每个其他条款的总和与其他条款的总和相反，每个其他条款的总和的绝对值等于其他每个条款的总和的绝对值。

公开(公告)号：WO1990012463A1

公开(公告)日：1990-10-18

申请号：PCT/US1990001823

申请日：1990-04-04

Applicant: COMSOURCE SYSTEMS CORPORATION

Inventor： COMSOURCE SYSTEMS CORPORATION ,  HILL, Lawrence, Woodbridge

IPC: H04L01/02

CPC classification number: G05D1/0265 ,  G06F11/076 ,  H03G3/001 ,  H03G3/002 ,  H04B1/69 ,  H04B1/713 ,  H04B1/715 ,  H04B3/54 ,  H04B3/56 ,  H04B7/0671 ,  H04B7/12 ,  H04B2001/7152 ,  H04B2001/71563 ,  H04B2203/5408 ,  H04B2203/5416 ,  H04B2203/5425 ,  H04B2203/5441 ,  H04B2203/5445 ,  H04B2203/5483 ,  H04B2203/5487 ,  H04B2203/5491 ,  H04B2203/5495 ,  H04J13/00 ,  H04L1/02

Abstract: Messages are transmitted on pairs of frequencies that are orthogonal, that is the frequencies have no least common denominator. A message is transmitted on the first of the pair of frequencies (F1, F2) and, simultaneously, its compliment is transmitted on the second of said pair of frequencies (F1, F2). The message is then retransmitted on another pair of orthogonal frequencies. A processor is provided for collecting information on the data error rates at each receiver. This information is periodically transmitted to a central frequency controller which collects this error information and determines the error rates on the frequencies being used.

Abstract translation: 消息是在正交的频率对上发送的，即频率具有最小的共同特征。 在一对频率（F1，F2）中的第一个频率上发送消息，同时，在所述频率对（F1，F2）中的第二个频率上发送其补码。 然后在另一对正交频率上重传该消息。 提供处理器用于收集关于每个接收机处的数据错误率的信息。 该信息被周期地发送到收集该错误信息并确定所使用频率上的错误率的中央频率控制器。

公开(公告)号：WO2017106612A1

公开(公告)日：2017-06-22

申请号：PCT/US2016/067118

申请日：2016-12-16

Applicant: IBIQUITY DIGITAL CORPORATION

Inventor： OLOCHWOSZCZ, Gabriel S. ,  PAHUJA, Ashwini ,  VINCELETTE, Scott

IPC: H04H20/22 ,  H04H60/12 ,  H04H20/26

CPC classification number: H03G3/3005 ,  G10L19/167 ,  H03G3/002 ,  H04H20/22 ,  H04H20/26 ,  H04H20/47 ,  H04H40/36 ,  H04H2201/18

Abstract: A method for processing a digital audio broadcast signal includes: separating an analog audio portion and a digital audio portion of the digital audio broadcast signal; determining the loudness of the analog audio portion and the digital audio portion over a first short time interval; using the loudness of the analog and digital audio portions to calculate a short term average gain; determining a long term average gain; converting one of the long term average gain or the short term average gain to dB; if an output has been blended to digital, adjusting a digital gain parameter by a preselected increment to produce a digital gain parameter; if an output has not been blended to digital, setting the digital gain parameter to the short term average gain; providing the digital gain parameter to an audio processor; and repeating the above steps using a second short time interval.

Abstract translation: 用于处理数字音频广播信号的方法包括：分离数字音频广播信号的模拟音频部分和数字音频部分; 在第一短时间间隔内确定模拟音频部分和数字音频部分的响度; 使用模拟和数字音频部分的响度来计算短期平均增益; 确定长期平均收益; 将长期平均增益或短期平均增益中的一个转换为dB; 如果输出已被混合为数字，则通过预选增量调整数字增益参数以产生数字增益参数; 如果输出未混合至数字，则将数字增益参数设置为短期平均增益; 将数字增益参数提供给音频处理器; 并使用第二短时间间隔重复上述步骤。

公开(公告)号：WO2017044335A1

公开(公告)日：2017-03-16

申请号：PCT/US2016/049266

申请日：2016-08-29

Applicant: MICROCHIP TECHNOLOGY INCORPORATED

Inventor： KERN, Lynn

IPC: H03M1/18 ,  H03G3/30 ,  H03M1/20

CPC classification number: H03M1/20 ,  H03F1/0277 ,  H03G3/001 ,  H03G3/002 ,  H03M1/12 ,  H03M1/185 ,  H03M3/486

Abstract: A combination of a precision analog-to-digital converter (ADC), an analog amplifier having selectable gains and an intelligent controller to coordinate the amplifier gain selection and placement of the digital conversion results into at least one register provide for a very high resolution analog-to-digital conversion process, at a high sample rate and low power consumption. For example, a 14-bit ADC may be used with selectable gain analog amplification, e.g. , x1, x2, x4 and x8, between the sampled signal and ADC input and an intelligent controller to provide a 17-bit conversion number having proper scaling of the digital sample words. The entire high resolution analog-to-digital conversion process may be automatically performed without additional control from external hardware/software.

Abstract translation: 精密模数转换器（ADC），具有可选择增益的模拟放大器和智能控制器的组合，用于协调放大器增益选择和将数字转换结果放置到至少一个寄存器中，提供非常高分辨率的模拟 数字转换过程，采样率高，功耗低。 例如，14位ADC可以与采样信号和ADC输入之间的可选增益模拟放大，例如x1，x2，x4和x8一起使用，并且智能控制器提供17位转换数，具有适当的缩放比例 数字样本单词。 可以自动执行整个高分辨率模数转换过程，而无需外部硬件/软件的附加控制。

公开(公告)号：WO2016063412A1

公开(公告)日：2016-04-28

申请号：PCT/JP2014/078348

申请日：2014-10-24

Applicant: パイオニア株式会社

Inventor： 井関　晃広

IPC: H04R3/00 ,  G10K11/178 ,  H04R3/04 ,  H04S5/02

CPC classification number: H04R3/12 ,  G10K11/178 ,  G10K11/17827 ,  G10K2210/12 ,  H03G3/002 ,  H03G3/3005 ,  H04R1/22 ,  H04R1/403 ,  H04R2499/13 ,  H04S7/302 ,  H04S2400/13

Abstract: 　音量制御装置は、例えば車室などの音響空間に適用され、車室内の座席などに設定される聴取位置における再生音のレベルを制御する。具体的には、音量制御装置は、外部より入力された音声信号に対して位相差を与えて一対のスピーカに供給する。ここで、位相差は、聴取位置の前方のスピーカから再生される音声信号と聴取位置の後方のスピーカから再生される音声信号の、所定周波数より小さい周波数について算出される。また、その位相差は、聴取位置における再生音レベルが、一対のスピーカのうちの一方のスピーカのみで音声信号を再生したときの再生音レベルよりも小さくなるように算出される。

Abstract translation: 根据本发明的音量控制装置应用于例如车辆内部的声学空间，并且控制在设置在车辆内部的座椅的收听位置的重放声音的水平。 具体地，音量控制装置对从外部输入的音频信号施加相位差，并将音频信号提供给一对扬声器。 这里，对于从收听位置前面的扬声器播放的音频信号和从收听位置后面的扬声器播放的音频信号，针对小于预定频率的频率计算相位差。 此外，计算相位差，使得当仅从一对扬声器中的一个扬声器播放音频信号时，在收听位置处的播放声音电平变得小于播放的声音电平。

公开(公告)号：WO2015113601A1

公开(公告)日：2015-08-06

申请号：PCT/EP2014/051794

申请日：2014-01-30

Applicant: HUAWEI TECHNOLOGIES CO., LTD. ,  GROSCHE, Peter ,  LANG, Yue ,  ZHANG, Qing

Inventor： GROSCHE, Peter ,  LANG, Yue ,  ZHANG, Qing

IPC: H03G7/00

CPC classification number: H03G3/002 ,  G10L19/26 ,  H03G7/002 ,  H03G7/007 ,  H03G11/008 ,  H04S7/307

Abstract: The invention relates to an audio compression system (100) for compressing an input audio signal, the audio compression system (100) comprising a digital filter (101) for filtering the input audio signal, the digital filter (101) comprising a frequency transfer function having a magnitude over frequency, the magnitude being formed by an equal loudness curve of a human ear to obtain a filtered audio signal, and a compressor (103) being configured to compress the input audio signal upon the basis of the filtered audio signal to obtain a compressed audio signal.

Abstract translation: 本发明涉及一种用于压缩输入音频信号的音频压缩系统（100），该音频压缩系统（100）包括用于对输入音频信号进行滤波的数字滤波器（101），数字滤波器（101）包括频率传递函数 具有超过频率的幅度，幅度由人耳的相等的响度曲线形成以获得滤波的音频信号，以及压缩器（103），其被配置为基于经滤波的音频信号来压缩输入音频信号，以获得 压缩音频信号。

公开(公告)号：WO2015102921A1

公开(公告)日：2015-07-09

申请号：PCT/US2014/071105

申请日：2014-12-18

Applicant: GRACENOTE, INC.

Inventor： JEYACHANDRAN, Suresh ,  BREMER, Vadim ,  CREMER, Markus K.

IPC: G10L25/93

CPC classification number: G10L15/20 ,  G10L25/48 ,  G10L2015/225 ,  H03G3/002 ,  H03G3/3005 ,  H03G3/3089

Abstract: Methods and systems for modification of electronic system operation based on acoustic ambience classification are presented. In an example method, at least one audio signal present in a physical environment of a user is detected. The at least one audio signal is analyzed to extract at least one audio feature from the audio signal. The audio signal is classified based on the audio feature to produce at least one classification of the audio signal. Operation of an electronic system interacting with the user in the physical environment is modified based on the classification of the audio signal.

Abstract translation: 提出了基于声学环境分类的电子系统操作修改方法和系统。 在示例性方法中，检测到存在于用户的物理环境中的至少一个音频信号。 分析至少一个音频信号以从音频信号中提取至少一个音频特征。 基于音频特征对音频信号进行分类以产生音频信号的至少一个分类。 基于音频信号的分类修改在物理环境中与用户交互的电子系统的操作。