ENCODING DEVICE AND ENCODING METHOD, DECODING DEVICE AND DECODING METHOD, AND PROGRAM
    93.
    发明申请
    ENCODING DEVICE AND ENCODING METHOD, DECODING DEVICE AND DECODING METHOD, AND PROGRAM 有权
    编码设备和编码方法,解码设备和解码方法以及程序

    公开(公告)号:US20130006647A1

    公开(公告)日:2013-01-03

    申请号:US13583994

    申请日:2011-03-08

    IPC分类号: G10L19/00

    CPC分类号: G10L19/035 G10L19/0212

    摘要: The present invention relates to an encoding device and an encoding method, a decoding device and a decoding method, and a program that reduce deterioration of sound quality due to encoding of audio signals.An envelope emphasis part (51) emphasizes an envelope (ENV). A noise shaping part (52) divides an emphasized envelope (D) formed by emphasis of the envelope (ENV) by a value larger than 1, and subtracts noise shaping (G) specified by information (NS) from a result of the division. A quantization part (14) sets a result of the subtraction as a quantization bit count (WL), and quantizes a normalized spectrum (S1) formed by normalization of a spectrum (S0) based on the quantization bit count (WL). A multiplexing part (53) multiplexes the information (NS), a quantized spectrum (QS) formed by quantization of the normalized spectrum (S1), and the envelope (ENV). The present invention can be applied to an encoding device encoding audio signals, for example.

    摘要翻译: 编码装置和编码方法,解码装置和解码方法技术领域本发明涉及一种减少音频信号编码导致的音质劣化的程序。 信封重点部分(51)强调信封(ENV)。 噪声整形部分(52)将由包络(ENV)的强调形成的强调包络(D)除以大于1的值,并从分割结果中减去由信息(NS)指定的噪声整形(G)。 量化部分(14)将减法的结果设置为量化位计数(WL),并且通过基于量化位计数(WL)对通过频谱归一化形成的归一化频谱(S1)进行量化。 复用部分(53)复用信息(NS),通过归一化频谱(S1)的量化形成的量化频谱(QS)和信封(ENV)。 例如,本发明可以应用于编码音频信号的编码装置。

    ENCODING APPARATUS, ENCODING METHOD, AND PROGRAM
    94.
    发明申请
    ENCODING APPARATUS, ENCODING METHOD, AND PROGRAM 有权
    编码装置,编码方法和程序

    公开(公告)号:US20120116781A1

    公开(公告)日:2012-05-10

    申请号:US13285310

    申请日:2011-10-31

    IPC分类号: G10L19/00

    摘要: An encoding apparatus includes a noise detector configured to detect noise included in a certain band in accordance with an audio signal, a gain controller configured to perform gain control on the audio signal so that components in the certain band of the audio signal are attenuated when the noise is detected by the noise detector, a bit allocation calculation unit configured to calculate the numbers of bits to be allocated to frequency spectra of the audio signal which have been subjected to the gain control performed by the gain controller in accordance with the frequency spectra, and a quantization unit configured to quantize the frequency spectra of the audio signal which have been subjected to the gain control in accordance with the numbers of the bits.

    摘要翻译: 一种编码装置包括:噪声检测器,被配置为根据音频信号检测包括在特定频带中的噪声;增益控制器,被配置为对音频信号执行增益控制,使得当音频信号的某个频带中的分量被衰减时 由噪声检测器检测噪声;比特分配计算单元,被配置为根据频谱计算分配给由增益控制器执行的增益控制的音频信号的频谱的比特数, 以及量化单元,被配置为根据比特数量化已经进行了增益控制的音频信号的频谱。

    Volume adjusting apparatus and volume adjusting method
    95.
    发明授权
    Volume adjusting apparatus and volume adjusting method 有权
    音量调节装置和音量调节方法

    公开(公告)号:US07968786B2

    公开(公告)日:2011-06-28

    申请号:US12497913

    申请日:2009-07-06

    IPC分类号: G10H1/00

    CPC分类号: H03G3/32 H04R5/04 H04R2430/01

    摘要: A volume adjusting apparatus includes a sound collecting unit configured to collect noise data of a surrounding environment, an analyzing unit configured to extract a feature value indicating a feature of the noise data collected by the sound collecting unit and a feature value indicating a feature of supplied musical tune data, and a control unit configured to generate volume adjustment information for adjusting playback volume of the musical tune data based on the feature value of the noise data and the feature value of the musical tune data and adjusts the playback volume of the musical tune data based on the volume adjustment information.

    摘要翻译: 音量调节装置包括:收集单元,被配置为收集周围环境的噪声数据;分析单元,被配置为提取表示由所述声音采集单元收集的噪声数据的特征的特征值,以及表示提供的特征的特征值 乐曲数据,以及控制单元,被配置为基于噪声数据的特征值和乐曲数据的特征值生成用于调节乐曲数据的播放音量的音量调节信息,并且调节音乐的回放音量 数据基于音量调整信息。

    PLAYBACK APPARATUS AND DISPLAY METHOD
    96.
    发明申请
    PLAYBACK APPARATUS AND DISPLAY METHOD 有权
    播放装置和显示方法

    公开(公告)号:US20100011024A1

    公开(公告)日:2010-01-14

    申请号:US12498547

    申请日:2009-07-07

    IPC分类号: G06F17/00 G06F17/30 G06F3/048

    摘要: A playback apparatus is able to present song categories to the user that are suited to the current environmental noise. An audio pickup picks up noise data of the surrounding environment. A noise analyzer analyzes the noise data, and then extracts characteristic quantities expressing the characteristics of the noise data. A noise categorizer categorizes the noise data on the basis of the extracted noise data characteristic quantities. A content category database stores content data recorded onto a recording medium in association with categories based on characteristic quantities of the content data. A content category selector cross-references the noise data categorization result with the content category database, and on the basis thereof, selects a plurality of content data categories from among the categorized content data recorded onto the recording medium. A display unit then displays the selected plurality of content data categories.

    摘要翻译: 回放装置能够向适合于当前环境噪声的用户呈现歌曲类别。 音频拾取器拾取周围环境的噪声数据。 噪声分析仪分析噪声数据,然后提取表示噪声数据特征的特征量。 噪声分类器基于所提取的噪声数据特征量对噪声数据进行分类。 内容类别数据库根据内容数据的特征量,将记录在记录介质上的内容数据与各种类别相关联地存储。 内容类别选择器与内容类别数据库交叉参考噪声数据分类结果,并且基于此,从记录在记录介质上的分类内容数据中选择多个内容数据类别。 然后,显示单元显示所选择的多个内容数据类别。

    Coding device and method, and recording medium
    97.
    发明授权
    Coding device and method, and recording medium 失效
    编码装置和方法以及记录介质

    公开(公告)号:US07330555B2

    公开(公告)日:2008-02-12

    申请号:US10145831

    申请日:2002-05-14

    申请人: Shiro Suzuki

    发明人: Shiro Suzuki

    CPC分类号: H04B1/66

    摘要: An L-channel signal and an R-channel signal are input into a subtractor in which the difference between the L-channel signal and the R-channel signal is determined. The resulting signal is input into first and second multipliers. In the first multiplier, a mixed output signal is generated by using the channel mixture ratio calculated in a previous frame. In the second multiplier, a mixed output signal is generated by using the channel mixture ratio calculated in a current frame. The mixed output signals from the first and second multipliers respectively undergo spectrum transform in first and second spectrum transformers, and quantized in first and second quantizers. A comparator compares a quantization error in the first quantizer with that in the second quantizer. If the quantization error in the second quantizer is greater than that in the first quantizer by a predetermined factor, the comparator controls a switch to select the output of the first quantizer.

    摘要翻译: L信道信号和R信道信号被输入到确定了L信道信号和R信道信号之间的差的减法器中。 所得到的信号被输入到第一和第二乘法器中。 在第一乘法器中,通过使用在前一帧中计算的信道混合比率来生成混合输出信号。 在第二乘法器中,通过使用当前帧中计算出的信道混合比来产生混合输出信号。 来自第一和第二乘法器的混合输出信号分别在第一和第二频谱变换器中进行频谱变换,并在第一和第二量化器中量化。 比较器将第一量化器中的量化误差与第二量化器中的量化误差进行比较。 如果第二量化器中的量化误差大于第一量化器中的量化误差预定因子,则比较器控制开关以选择第一量化器的输出。

    Image data alteration preventing apparatus and alteration preventing method
    98.
    发明授权
    Image data alteration preventing apparatus and alteration preventing method 失效
    图像数据变更防止装置及防变更方法

    公开(公告)号:US06643451B1

    公开(公告)日:2003-11-04

    申请号:US09274762

    申请日:1999-03-24

    IPC分类号: H04N591

    摘要: An image data alteration preventing apparatus according to the present invention comprises recording means for producing first alteration detecting data on the basis of image data, to record the produced first alteration detecting data, together with the image data, on a recording medium, and examining means for producing second alteration detecting data on the basis of the image data read out of the recording medium, and collating the produced second alteration detecting data and the first alteration detecting data read out of the recording medium, to judge whether or not the image data read out of the recording medium is altered.

    摘要翻译: 根据本发明的图像数据改变防止装置包括:记录装置,用于根据图像数据产生第一改变检测数据,将产生的第一变化检测数据与图像数据一起记录在记录介质上;以及检查装置 用于根据从记录介质读出的图像数据产生第二变更检测数据,并对所生成的第二变更检测数据和从记录介质读出的第一变更检测数据进行整理,以判断读取的图像数据是否被读取 在记录介质中出现改变。

    PLL circuit
    99.
    发明授权
    PLL circuit 失效
    PLL电路

    公开(公告)号:US06441661B1

    公开(公告)日:2002-08-27

    申请号:US09720658

    申请日:2000-12-28

    IPC分类号: H03L706

    CPC分类号: G11B20/1024

    摘要: An A/D converter (30) samples an analog signal synchronously with a sampling clock from a VCO (70). These sampled values are stored in a shift register (410). A code judging section (420) detects the positive/negative sign pattern (time-series code pattern) of the sampled values held in storage elements (S0 to S5) of the shift register (410) and stores the sampled values in predetermined register (431 to 434) according to the detected sign pattern. According to this, a calculating section (430) determines the phase difference between the analog signal and the sampling clock. The phase difference is fed to a VCO (70) through a D/A converter (50) and a loop filter (60).

    摘要翻译: A / D转换器(30)与来自VCO(70)的采样时钟同步地采样模拟信号。 这些采样值被存储在移位寄存器(410)中。 代码判定部分(420)检测保持在移位寄存器(410)的存储元件(S0至S5)中的采样值的正/负符号模式(时间序列码模式),并将采样值存储在预定寄存器 431〜434)。 据此,计算部(430)确定模拟信号和采样时钟之间的相位差。 相位差通过D / A转换器(50)和环路滤波器(60)馈送到VCO(70)。

    Information playback apparatus
    100.
    发明授权
    Information playback apparatus 失效
    信息播放装置

    公开(公告)号:US5841750A

    公开(公告)日:1998-11-24

    申请号:US842887

    申请日:1997-04-17

    摘要: An information playback apparatus includes a clock combining circuit having a FIFO circuit, a signal combining circuit and a signal selecting circuit. The FIFO circuit accepts, for example, a positive-edge playback signal RDATA0 that has as data the positive edge of a playback signal obtained from recording domains formed in a recording medium, RDATA0 being synchronized with a positive-edge clock signal RCLK0. The FIFO circuit also accepts a negative-edge playback signal RDATA1 that has as data the negative edge of the playback signal, RDATA1 being synchronized with a negative-edge clock signal RCLK1. The FIFO circuit causes RDATA0 and RDATA1 to be synchronized with RCLK0 so as to output a delayed positive-edge playback signal RDATA0D and a delayed negative-edge playback signal RDATA1D. The delayed negative-edge playback signal is delayed by -KT to +LT, where K and L are integers and T is the clock period. The signal combining circuit combines the delayed positive-edge and negative-edge playback signals, and outputs (K+L+1) combined signals. The signal selecting circuit detects marks contained in the playback signal, the marks being independent of the (K+L+1) combined signals, and outputs selected ones of the combined signals based on the detected marks.

    摘要翻译: 信息重放装置包括具有FIFO电路,信号组合电路和信号选择电路的时钟组合电路。 FIFO电路例如接收具有从形成在记录介质中的记录区域获得的重放信号的上升沿作为数据的正边沿重放信号RDATA0,RDATA0与上升沿时钟信号RCLK0同步。 FIFO电路还接受具有作为数据的重放信号的负沿的负边沿重放信号RDATA1,RDATA1与负边沿时钟信号RCLK1同步。 FIFO电路使RDATA0和RDATA1与RCLK0同步,以输出延迟的正边沿重放信号RDATA0D和延迟的负边沿重放信号RDATA1D。 延迟的负边沿重放信号被-KT延迟到+ LT,其中K和L是整数,T是时钟周期。 信号组合电路将延迟的正边沿和负边沿重放信号以及输出(K + L + 1)组合信号相结合。 信号选择电路检测回放信号中包含的标记,标记与(K + L + 1)组合信号无关,并根据检测到的标记输出组合信号中的选定信号。