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公开(公告)号：US08121299B2
公开(公告)日：2012-02-21
申请号：US12185787
申请日：2008-08-04
IPC分类号： H04R29/00
CPC分类号： G10H1/0008 , G10H2210/046 , G10H2210/066
摘要： Methods, digital systems, and computer readable media are provided for detection of music in an audio signal. Music is detected by partitioning the audio signal into overlapping frames, determining a fundamental frequency of a frame in the overlapping frames, including the fundamental frequency of the frame in a histogram of fundamental frequency values of frames occurring in the audio signal prior to the frame, and indicating that music is present in the audio signal when a number of occurrences of a fundamental frequency value in the histogram exceeds a threshold.
摘要翻译： 方法，数字系统和计算机可读介质被提供用于检测音频信号中的音乐。 通过将音频信号划分成重叠的帧来检测音乐，确定重叠帧中的帧的基本频率，包括在帧之前的音频信号中出现的帧的基本频率值的直方图中的帧的基本频率， 并且当直方图中的基频出现次数超过阈值时，指示音频存在于音频信号中。
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公开(公告)号：US08085940B2
公开(公告)日：2011-12-27
申请号：US12187884
申请日：2008-08-07
IPC分类号： H04R5/00
CPC分类号： H04R5/04
摘要： Rebalancing of an audio signal refers to achieving a balance of perceived loudness, typically of right and left channels, given an unbalanced input. A flexible method to automatically rebalance an audio input signal is robust against noise in extreme cases through the individual channels combined in various ways as a function of the loudness ratio between input channels.
摘要翻译： 音频信号的再平衡是指给定不平衡输入，实现感知响度的平衡（通常为左右声道）。 在极端情况下，通过以各种方式组合的各个通道作为输入通道之间的响度比的函数，自动重新平衡音频输入信号的灵活方法对噪声是鲁棒的。
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公开(公告)号：US20090060211A1
公开(公告)日：2009-03-05
申请号：US12185787
申请日：2008-08-04
IPC分类号： H04R29/00
CPC分类号： G10H1/0008 , G10H2210/046 , G10H2210/066
摘要： Methods, digital systems, and computer readable media are provided for detection of music in an audio signal. Music is detected by partitioning the audio signal into overlapping frames, determining a fundamental frequency of a frame in the overlapping frames, including the fundamental frequency of the frame in a histogram of fundamental frequency values of frames occurring in the audio signal prior to the frame, and indicating that music is present in the audio signal when a number of occurrences of a fundamental frequency value in the histogram exceeds a threshold.
摘要翻译： 方法，数字系统和计算机可读介质被提供用于检测音频信号中的音乐。 通过将音频信号划分成重叠的帧来检测音乐，确定重叠帧中的帧的基本频率，包括在帧之前的音频信号中出现的帧的基本频率值的直方图中的帧的基本频率， 并且当直方图中的基频出现次数超过阈值时，指示音频存在于音频信号中。
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公开(公告)号：US20090060203A1
公开(公告)日：2009-03-05
申请号：US12187884
申请日：2008-08-07
IPC分类号： H04R5/00
CPC分类号： H04R5/04
摘要： Rebalancing of an audio signal refers to achieving a balance of perceived loudness, typically of right and left channels, given an unbalanced input. A flexible method to automatically rebalance an audio input signal is robust against noise in extreme cases through the individual channels combined in various ways as a function of the loudness ratio between input channels.
摘要翻译： 音频信号的再平衡是指给定不平衡输入，实现感知响度的平衡（通常为左右声道）。 在极端情况下，通过以各种方式组合的各个通道作为输入通道之间的响度比的函数，自动重新平衡音频输入信号的灵活方法对噪声是鲁棒的。
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5.发明授权Method and system for estimating frequency and amplitude change of spectral peaks 有权用于估计频谱峰值的频率和振幅变化的方法和系统公开(公告)号：US08275475B2
公开(公告)日：2012-09-25
申请号：US12193678
申请日：2008-08-18
IPC分类号： G06F17/00
CPC分类号： G10L19/093
摘要： Methods, digital systems, and computer readable media are provided for estimating change of amplitude and frequency in a digital audio signal by transforming a frame of the digital audio signal to the frequency domain, locating a frequency peak in the transformed frame, determining an interpolated peak of the located frequency peak, computing inner products of a portion of the transformed frame about the interpolated peak with a plurality of test signals, and estimating change of amplitude and change of frequency for the frequency peak from results of the inner products.
摘要翻译： 提供方法，数字系统和计算机可读介质，用于通过将数字音频信号的帧变换为频域来估计数字音频信号中的幅度和频率的变化，在变换帧中定位频率峰值，确定内插峰值 通过多个测试信号来计算关于内插峰值的变换帧的一部分的内积，以及从内积的结果估计频率峰值的频率变化和频率变化。
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6.发明授权Method and system for determining a gain reduction parameter level for loudspeaker equalization 有权用于确定扬声器均衡的增益降低参数电平的方法和系统公开(公告)号：US08085951B2
公开(公告)日：2011-12-27
申请号：US12409347
申请日：2009-03-23
摘要： Methods, digital systems, and computer readable media are provided for determining a gain reduction parameter level for loudspeaker equalization by determining a noise score, an equalization effectiveness score, and an equalization non-effectiveness score for a candidate gain reduction parameter level, determining a composite quality score using the three scores, and designing a compensating filter for the loudspeaker using the candidate gain reduction parameter level if the composite quality score is better than composite quality scores of all other candidate gain reduction parameter levels.
摘要翻译： 提供方法，数字系统和计算机可读介质，用于通过确定候选增益降低参数水平的噪声分数，均衡有效性得分和均衡非有效性评分来确定用于扬声器均衡的增益降低参数水平， 使用三个分数的质量得分，以及如果复合质量得分优于所有其他候选增益降低参数水平的综合质量得分，则使用候选增益降低参数水平设计用于扬声器的补偿滤波器。
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公开(公告)号：US08065140B2
公开(公告)日：2011-11-22
申请号：US12185800
申请日：2008-08-04
IPC分类号： G10L19/00
CPC分类号： G10L25/90
摘要： Methods, digital systems, and computer readable media are provided for determining a predominant fundamental frequency of a frame of an audio signal by finding a maximum absolute signal value in history data for the frame, determining a number of bits for downshifting based on the maximum absolute signal value, computing autocorrelations for the frame using signal values downshifted by the number of bits, and determining the predominant fundamental frequency using the computed autocorrelations.
摘要翻译： 提供方法，数字系统和计算机可读介质，用于通过在帧的历史数据中找到最大绝对信号值来确定音频信号的帧的主要基频，基于最大绝对值确定用于降档的位数 信号值，使用由位数减少的信号值来计算帧的自相关性，以及使用所计算的自相关来确定主要基频。
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8.发明申请Method and System for Determining a Gain Reduction Parameter Level for Loudspeaker Equalization 有权用于确定扬声器均衡的增益减小参数级别的方法和系统公开(公告)号：US20100239097A1
公开(公告)日：2010-09-23
申请号：US12409347
申请日：2009-03-23
摘要： Methods, digital systems, and computer readable media are provided for determining a gain reduction parameter level for loudspeaker equalization by determining a noise score, an equalization effectiveness score, and an equalization non-effectiveness score for a candidate gain reduction parameter level, determining a composite quality score using the three scores, and designing a compensating filter for the loudspeaker using the candidate gain reduction parameter level if the composite quality score is better than composite quality scores of all other candidate gain reduction parameter levels.
摘要翻译： 提供方法，数字系统和计算机可读介质，用于通过确定候选增益降低参数水平的噪声分数，均衡有效性得分和均衡非有效性评分来确定用于扬声器均衡的增益降低参数水平， 使用三个分数的质量得分，以及如果复合质量得分优于所有其他候选增益降低参数水平的综合质量得分，则使用候选增益降低参数水平设计用于扬声器的补偿滤波器。
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公开(公告)号：US07715575B1
公开(公告)日：2010-05-11
申请号：US11364791
申请日：2006-02-28
IPC分类号： H04R5/02
CPC分类号： H04S3/002 , H04S3/004 , H04S3/008 , H04S2400/01 , H04S2420/01
摘要： Audio loudspeaker and headphone virtualizers and methods use room impulse responses with modified individual head-related transfer functions prior to superposition including middle truncation; and perform convolutions in the frequency domain with zero-padded sections to avoid circular convolution overlap.
摘要翻译： 音频扬声器和耳机虚拟器和方法在叠加之前使用具有修改的单独头部相关传输函数的房间脉冲响应，包括中间截断; 并在零频段执行频域的卷积，以避免循环卷积重叠。
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公开(公告)号：US20090063138A1
公开(公告)日：2009-03-05
申请号：US12185800
申请日：2008-08-04
IPC分类号： G10L11/04
CPC分类号： G10L25/90
摘要： Methods, digital systems, and computer readable media are provided for determining a predominant fundamental frequency of a frame of an audio signal by finding a maximum absolute signal value in history data for the frame, determining a number of bits for downshifting based on the maximum absolute signal value, computing autocorrelations for the frame using signal values downshifted by the number of bits, and determining the predominant fundamental frequency using the computed autocorrelations.
摘要翻译： 提供方法，数字系统和计算机可读介质，用于通过在帧的历史数据中找到最大绝对信号值来确定音频信号的帧的主要基频，基于最大绝对值确定用于降档的位数 信号值，使用由位数减少的信号值来计算帧的自相关性，以及使用所计算的自相关来确定主要基频。
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