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    • 1. 发明申请
    • METHOD AND APPARATUS FOR ANALOG AND DIGITAL AUDIO BLEND FOR HD RADIO RECEIVERS
    • 用于高清无线电接收机的模拟和数字音频混合的方法和装置
    • WO2016130655A1
    • 2016-08-18
    • PCT/US2016/017322
    • 2016-02-10
    • IBIQUITY DIGITAL CORPORATION
    • NEKHAMKIN, MichaelDOMAZETOVIC, AndrejYEN, RaymondTHULASINGAM, Sivakumar
    • H04H20/26
    • H04H20/88G10L19/0019G10L21/04H04H20/26H04H2201/18
    • A method and apparatus are provided for blending analog and digital portions of a composite digital radio broadcast signal by processing compressed audio packets to compute corresponding digital audio quality indicator values, storing the compressed audio packets in an audio blend buffer, processing audio information from each compressed audio packet stored in the audio blend buffer with an audio decoder to generate decompressed digital audio signal samples, and using the digital audio quality indicator values to guide a blending process for combining analog audio signal samples with the digital audio signal samples to produce an audio output by preventing unnecessary blending back and forth between analog and digital if the digital audio quality indicator values indicate that the compressed audio packets are degraded or impaired.
    • 提供了一种方法和装置,用于通过处理压缩音频分组来混合复合数字无线电广播信号的模拟和数字部分,以计算相应的数字音频质量指标值,将压缩音频分组存储在音频混合缓冲器中,处理来自每个压缩的音频信息 存储在音频混合缓冲器中的音频分组与音频解码器,以产生解压缩的数字音频信号样本,并且使用数字音频质量指示符值来引导用于将模拟音频信号样本与数字音频信号样本组合的混合处理以产生音频输出 如果数字音频质量指示符值指示压缩的音频分组被降级或受损,则通过防止在模拟和数字之间来回的不必要的混合。
    • 2. 发明申请
    • SELECTIVE CONFERENCE DIGEST
    • 选择性会议摘要
    • WO2016126770A2
    • 2016-08-11
    • PCT/US2016/016285
    • 2016-02-03
    • DOLBY LABORATORIES LICENSING CORPORATION
    • CARTWRIGHT, Richard J.SUN, Xuejing
    • H04M3/56H04L29/06G10L21/043
    • H04M11/10G10L15/02G10L15/22G10L21/04G10L21/043H04L65/403H04M3/565
    • Various disclosed implementations involve processing and/or playback of a recording of a conference involving a plurality of conference participants. Some implementations disclosed herein involve receiving audio data corresponding to a recording of at least one conference involving a plurality of conference participants. In some examples, only a portion of the received audio data will be selected as playback audio data. The selection process may involve a topic selection process, a talkspurt filtering process and/or an acoustic feature selection process. Some examples involve receiving an indication of a target playback time duration. Selecting the portion of audio data may involve making a time duration of the playback audio data within a threshold time difference of the target playback time duration.
    • 各种公开的实现涉及处理和/或回放涉及多个会议参与者的会议的录制。 本文公开的一些实现涉及接收与涉及多个会议参与者的至少一个会议的记录相对应的音频数据。 在一些示例中,将仅选择接收到的音频数据的一部分作为回放音频数据。 选择过程可涉及话题选择过程,话音突击过滤过程和/或声学特征选择过程。 一些示例涉及接收目标回放持续时间的指示。 选择音频数据的该部分可以涉及使回放音频数据的持续时间在目标回放持续时间的阈值时间差内进行。
    • 7. 发明申请
    • CROSS PRODUCT ENHANCED SUBBAND BLOCK BASED HARMONIC TRANSPOSITION
    • 交叉产品增强基于块的谐波传输
    • WO2012034890A1
    • 2012-03-22
    • PCT/EP2011/065318
    • 2011-09-05
    • DOLBY INTERNATIONAL ABVILLEMOES, Lars
    • VILLEMOES, Lars
    • G10L21/02G10L21/04
    • G10L19/0208G10L19/025G10L19/265G10L21/038G10L21/04H03G3/00H03G3/3089
    • The invention provides an efficient implementation of cross-product enhanced high-frequency reconstruction (HFR), wherein a new component at frequency QΩ + Ω q is generated on the basis of existing components at Ω and QΩ + Ω q. The invention provides a block-based harmonic transposition, wherein a time block of complex subband samples is processed with a common phase modification. Superposition of several modified samples has the net effect of limiting undesirable intermodulation products, thereby enabling a coarser frequency resolution and/or lower degree of oversampling to be used. In one embodiment, the invention further includes a window function suitable for use with block-based cross-product enhanced HFR. A hardware embodiment of the invention may include an analysis filter bank (101), a subband processing unit (102) configurable by control data (104) and a synthesis filter bank (103).
    • 本发明提供了跨产品增强型高频重构(HFR)的有效实现,其中基于O和QO + Oq上的现有组件生成频率为QO + Oq的新分量。 本发明提供了一种基于块的谐波转置,其中复共子带样本的时间块以公共相位修改进行处理。 几个修改样品的叠加具有限制不期望的互调产物的净效应,从而使得可以使用更粗糙的频率分辨率和/或较低的过采样度。 在一个实施例中,本发明还包括适用于基于块的交叉产品增强型HFR的窗函数。 本发明的硬件实施例可以包括分析滤波器组(101),可由控制数据(104)和合成滤波器组(103)配置的子带处理单元(102)。
    • 10. 发明申请
    • IMPROVED HARMONIC TRANSPOSITION
    • 改进的谐波传输
    • WO2010086461A1
    • 2010-08-05
    • PCT/EP2010/053222
    • 2010-03-12
    • DOLBY INTERNATIONAL ABEKSTRAND, PerVILLEMOES, Lars, Falck
    • EKSTRAND, PerVILLEMOES, Lars, Falck
    • G10L19/02G10L21/02G10L21/04
    • G10L19/022G10L19/0212G10L19/24G10L21/038G10L21/04
    • The present invention relates to transposing signals in time and/or frequency and in particular to coding of audio signals. More particular, the present invention relates to high frequency reconstruction (HFR) methods including a frequency domain harmonic transposer. A method and system for generating a transposed output signal from an input signal using a transposition factor T is described. The system comprises an analysis window of length L a , extracting a frame of the input signal, and an analysis transformation unit of order M transforming the samples into M complex coefficients. M is a function of the transposition factor T. The system further comprises a nonlinear processing unit altering the phase of the complex coefficients by using the transposition factor T, a synthesis transformation unit of order M transforming the altered coefficients into M altered samples, and a synthesis window of length Ls, generating a frame of the output signal.
    • 本发明涉及在时间和/或频率上转置信号,特别涉及音频信号的编码。 更具体地,本发明涉及包括频域谐波转移器的高频重构(HFR)方法。 描述了使用转置因子T从输入信号生成转置输出信号的方法和系统。 该系统包括长度为La的分析窗口,提取输入信号的帧,以及将样本变换为M个复系数的阶数M的分析变换单元。 M是转置因子T的函数。该系统还包括通过使用转置因子T来改变复系数的相位的非线性处理单元,将改变的系数转换为M个改变的样本的阶数M的合成变换单元,以及 合成窗口长度Ls,产生输出信号的帧。