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    • 1. 发明申请
    • Complexity Scalable Perceptual Tempo Estimation
    • 复杂性可扩展感知速度估计
    • US20120215546A1
    • 2012-08-23
    • US13503136
    • 2010-10-26
    • Arijit BiswasDanilo HollosiMichael Schug
    • Arijit BiswasDanilo HollosiMichael Schug
    • G10L19/00
    • G10H1/40G10H2210/076G10H2230/015G10H2240/075
    • The present document relates to methods and systems for estimating the tempo of a media signal, such as audio or combined video/audio signal. In particular, the document relates to the estimation of tempo perceived by human listeners, as well as to methods and systems for tempo estimation at scalable computational complexity. A method and system for extracting tempo information of an audio signal from an encoded bit-stream of the audio signal comprising spectral band replication data is described. The method comprises the steps of determining a payload quantity associated with the amount of spectral band replication data comprised in the encoded bit-stream for a time interval of the audio signal; repeating the determining step for successive time intervals of the encoded bit-stream of the audio signal, thereby determining a sequence of payload quantities; identifying a periodicity in the sequence of payload quantities; and extracting tempo information of the audio signal from the identified periodicity.
    • 本文件涉及用于估计媒体信号(诸如音频或组合视频/音频信号)的速度的方法和系统。 特别地,该文件涉及人类听众感知的节奏的估计,以及用于以可缩放的计算复杂度进行速度估计的方法和系统。 描述用于从包括频谱带复制数据的音频信号的编码比特流中提取音频信号的速度信息的方法和系统。 该方法包括以下步骤:在音频信号的时间间隔中确定与包含在编码比特流中的频谱带复制数据量相关联的有效载荷数量; 重复音频信号的编码比特流的连续时间间隔的确定步骤,从而确定有效载荷量的序列; 识别有效载荷数量序列中的周期; 以及从所识别的周期中提取音频信号的速度信息。
    • 2. 发明授权
    • Complexity scalable perceptual tempo estimation
    • 复杂性可扩展感知速度估计
    • US09466275B2
    • 2016-10-11
    • US13503136
    • 2010-10-26
    • Arijit BiswasDanilo HollosiMichael Schug
    • Arijit BiswasDanilo HollosiMichael Schug
    • G10H7/00G10H1/40
    • G10H1/40G10H2210/076G10H2230/015G10H2240/075
    • The present document relates to methods and systems for estimating the tempo of a media signal, such as audio or combined video/audio signal. In particular, the document relates to the estimation of tempo perceived by human listeners, as well as to methods and systems for tempo estimation at scalable computational complexity. A method and system for extracting tempo information of an audio signal from an encoded bit-stream of the audio signal comprising spectral band replication data is described. The method comprises the steps of determining a payload quantity associated with the amount of spectral band replication data comprised in the encoded bit-stream for a time interval of the audio signal; repeating the determining step for successive time intervals of the encoded bit-stream of the audio signal, thereby determining a sequence of payload quantities; identifying a periodicity in the sequence of payload quantities; and extracting tempo information of the audio signal from the identified periodicity.
    • 本文件涉及用于估计媒体信号(诸如音频或组合视频/音频信号)的速度的方法和系统。 特别地,该文件涉及人类听众感知的节奏的估计,以及用于以可缩放的计算复杂度进行速度估计的方法和系统。 描述用于从包括频谱带复制数据的音频信号的编码比特流中提取音频信号的速度信息的方法和系统。 该方法包括以下步骤:在音频信号的时间间隔中确定与包含在编码比特流中的频谱带复制数据量相关联的有效载荷数量; 重复音频信号的编码比特流的连续时间间隔的确定步骤,从而确定有效载荷量的序列; 识别有效载荷数量序列中的周期; 以及从所识别的周期中提取音频信号的速度信息。
    • 3. 发明申请
    • Method and System for Encoding Audio Data with Adaptive Low Frequency Compensation
    • 用自适应低频补偿编码音频数据的方法和系统
    • US20130179175A1
    • 2013-07-11
    • US13588890
    • 2012-08-17
    • Arijit BiswasVinay MelkoteMichael SchugGrant A. DavidsonMark S. Vinton
    • Arijit BiswasVinay MelkoteMichael SchugGrant A. DavidsonMark S. Vinton
    • G10L19/00
    • G10L19/028G10L19/0204G10L19/032G10L19/265
    • A method for determining mantissa bit allocation of frequency domain audio data to be encoded, including by performing adaptive low frequency compensation on each frequency band of a set of low frequency bands of the data. The low frequency compensation includes steps of: performing tonality detection on the audio data to generate compensation control data indicative of whether each frequency band in the set has prominent tonal content; and performing low frequency compensation on each frequency band in the set having prominent tonal content, including by correcting a preliminary masking value for each frequency band having prominent tonal content, but not performing low frequency compensation on the audio data in any other frequency band in the set. Other aspects are audio encoding methods including such tonality detection and low frequency compensation steps, and a system configured to perform any embodiment of the inventive method.
    • 一种用于确定要编码的频域音频数据的尾数位分配的方法,包括通过对数据的一组低频带的每个频带执行自适应低频补偿。 低频补偿包括以下步骤:对音频数据执行音调检测,以产生指示该组中的每个频带是否具有突出的音调内容的补偿控制数据; 并且对具有突出音调内容的集合中的每个频带执行低频补偿,包括通过校正具有突出音调内容的每个频带的初步屏蔽值,但不对低频补偿中的任何其他频带中的音频数据执行低频补偿 组。 其他方面是包括这种音调检测和低频补偿步骤的音频编码方法,以及被配置为执行本发明方法的任何实施例的系统。
    • 4. 发明授权
    • Method and system for encoding audio data with adaptive low frequency compensation
    • 用自适应低频补偿编码音频数据的方法和系统
    • US08527264B2
    • 2013-09-03
    • US13588890
    • 2012-08-17
    • Arijit BiswasVinay MelkoteMichael SchugGrant Allen DavidsonMark Stuart Vinton
    • Arijit BiswasVinay MelkoteMichael SchugGrant Allen DavidsonMark Stuart Vinton
    • G10L19/00
    • G10L19/028G10L19/0204G10L19/032G10L19/265
    • A method for determining mantissa bit allocation of frequency domain audio data to be encoded, including by performing adaptive low frequency compensation on each frequency band of a set of low frequency bands of the data. The low frequency compensation includes steps of: performing tonality detection on the audio data to generate compensation control data indicative of whether each frequency band in the set has prominent tonal content; and performing low frequency compensation on each frequency band in the set having prominent tonal content, including by correcting a preliminary masking value for each frequency band having prominent tonal content, but not performing low frequency compensation on the audio data in any other frequency band in the set; wherein the frequency domain audio data comprises an exponent value for said each low frequency band of the set, and the tonality detection includes determining, for said each low frequency band of the set, a measure of difference between exponents and corresponding tented exponents of the audio data. Other aspects are audio encoding methods including such tonality detection and low frequency compensation steps, and a system configured to perform any embodiment of the inventive method.
    • 一种用于确定要编码的频域音频数据的尾数位分配的方法,包括通过对数据的一组低频带的每个频带执行自适应低频补偿。 低频补偿包括以下步骤:对音频数据执行音调检测,以产生指示该组中的每个频带是否具有突出的音调内容的补偿控制数据; 并且对具有突出音调内容的集合中的每个频带执行低频补偿,包括通过校正具有突出音调内容的每个频带的初步屏蔽值,但不对低频补偿中的任何其他频带中的音频数据执行低频补偿 组; 其中所述频域音频数据包括所述组的所述每个低频带的指数值,并且所述音调检测包括针对所述组的所述每个低频带确定所述音频的指数和对应的帐篷指数之间的差的度量 数据。 其他方面是包括这种音调检测和低频补偿步骤的音频编码方法,以及被配置为执行本发明方法的任何实施例的系统。