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1. 发明申请

WO2003003600A1 NARROWBAND SPEECH SIGNAL TRANSMISSION SYSTEM WITH PERCEPTUAL LOW-FREQUENCY ENHANCEMENT 审中-公开
标题翻译：具有低频增益的窄带语音信号传输系统
公开(公告)号：WO2003003600A1
公开(公告)日：2003-01-09
申请号：PCT/IB2002/002367
申请日：2002-06-20
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , SLUIJTER, Robert, J. , LARSEN, Erik , GERRITS, Andreas, J. , AARTS, Ronaldus, M.
发明人： SLUIJTER, Robert, J. , LARSEN, Erik , GERRITS, Andreas, J. , AARTS, Ronaldus, M.
IPC分类号： H04B1/66
CPC分类号： G10L21/038 , H04B1/665 , H04B1/667
摘要： Described is a transmission system (20) comprising a transmitter (22) for transmitting a NARROWBAND speech signal, e.g. bandwidth limited between 300 and 3400 Hz, to a receiver (24) via a transmission channel (26). The transmission system (20) is characterized in that the transmitter (22) or the receiver (24) comprise amplifying means (28,30,32,34,36,38) for enhancing a listener's perception of low-frequency speech signal components by amplifying a frequency band of the NARROWBAND speech signal. The frequency band may contain frequencies in the range of 300-450 Hz. The amplifying means (28,30,32,34,36,38) may comprise a band pass filter (28,34) for deriving the frequency band from the NARROWBAND speech signal and an amplifier (30,36) for amplifying the frequency band. The amplification of the frequency band gives a reinforced perception of frequency components below the NARROWBAND speech signal (e.g. 50-300 Hz), compensating for the lack of the physical presence of these components.
摘要翻译：描述了一种传输系统（20），包括用于发送NARROWBAND语音信号的发射机（22）带宽限制在300和3400Hz之间，经由传输信道（26）传送到接收器（24）。传输系统（20）的特征在于发射机（22）或接收机（24）包括放大装置（28,30,32,34,36,38），用于增强听众对低频语音信号分量的感知放大NARROWBAND语音信号的频带。该频带可以包含在300-450Hz范围内的频率。放大装置（28,30,32,34,36,38）可以包括用于从NARROWBAND语音信号导出频带的带通滤波器（28,34）和用于放大频带的放大器（30,36）。频带的放大给出了低于NARROWBAND语音信号（例如50-300Hz）的频率分量的增强感知，补偿了这些组件的物理存在的缺乏。

2. 发明申请

WO2004086817A2 CODING OF MAIN AND SIDE SIGNAL REPRESENTING A MULTICHANNEL SIGNAL 审中-公开
标题翻译：主要和信号的编码表示多通道信号
公开(公告)号：WO2004086817A2
公开(公告)日：2004-10-07
申请号：PCT/IB2004/050288
申请日：2004-03-18
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , DEN BRINKER, Albertus, C. , GERRITS, Andreas, J. , SLUIJTER, Robert, J.
发明人： DEN BRINKER, Albertus, C. , GERRITS, Andreas, J. , SLUIJTER, Robert, J.
IPC分类号： H04S
CPC分类号： G10L19/008 , H04S1/007 , H04S2420/03
摘要： The present invention relates to a method of encoding a main and a side signal that are generated by the first step of parametric stereo encoding. when encoding according to the present invention, firstly, the relation between the power spectral energies of the main and the side signal is kept intact per psycho acoustical band. Secondly, the side signal has to be uncorrelated with the main signal in psycho acoustical sense. the method of encoding the main and the side signal, according to the present invention, is twofold. Firstly, a filter is estimated which is able to re-instate the desired spectral amplitude relation and the temporal envelope.
摘要翻译：本发明涉及一种通过参数立体声编码的第一步骤生成的主信号和侧信号的编码方法。当根据本发明的编码时，首先，主要和侧面信号的功率谱能量之间的关系在每个心理声学带保持完整。其次，侧面信号必须与心理声学中的主要信号不相关。根据本发明的编码主信号和侧信号的方法是双重的。首先，估计能够重新设定期望的频谱幅度关系和时间包络的滤波器。

3. 发明申请

WO2004006225A1 SINUSOIDAL AUDIO CODING 审中-公开
标题翻译： SINUSOIDAL音频编码
公开(公告)号：WO2004006225A1
公开(公告)日：2004-01-15
申请号：PCT/IB2003/002746
申请日：2003-06-18
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , SLUIJTER, Robert, J. , GERRITS, Andreas, J. , HOTHO, Gerard, H. , DEN BRINKER, Albertus, C.
发明人： SLUIJTER, Robert, J. , GERRITS, Andreas, J. , HOTHO, Gerard, H. , DEN BRINKER, Albertus, C.
IPC分类号： G10L19/02
CPC分类号： G10L19/093
摘要： Coding (1) an audio signal (x) comprises providing a respective set of sampled signal values for each of a plurality of sequential segments. The sampled signal values are analysed (130) to generate one or more sinusoidal components for each of the plurality of sequential segments. The sinusoidal components are linked across a plurality of sequential segments. Sinusoidal codes (CS) comprise tracks of linked sinusoidal components for each of the plurality of sequential segments. Each track comprises a frequency and amplitude for a sinusoidal component in a starting segment of a track whereas selected tracks include an indicator that no phase is included for said starting segment.
摘要翻译：编码（1）音频信号（x）包括为多个连续片段中的每一个提供相应的一组采样信号值。分析采样信号值（130）以为多个连续段中的每一个生成一个或多个正弦分量。正弦分量连接在多个连续片段上。正弦码（CS）包括用于多个连续片段中的每一个的链接的正弦分量的轨道。每个轨道包括轨道的起始段中的正弦分量的频率和幅度，而所选择的轨道包括用于所述起始段不包括相位的指示符。

4. 发明申请

WO2003003350A1 WIDEBAND SIGNAL TRANSMISSION SYSTEM 审中-公开
标题翻译：宽带信号传输系统
公开(公告)号：WO2003003350A1
公开(公告)日：2003-01-09
申请号：PCT/IB2002/002366
申请日：2002-06-20
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , SLUIJTER, Robert, J. , GERRITS, Andreas, J. , CHENNOUKH, Samir
发明人： SLUIJTER, Robert, J. , GERRITS, Andreas, J. , CHENNOUKH, Samir
IPC分类号： G10L21/02
CPC分类号： G10L21/038
摘要： Described is a transmission system (10) comprising a transmitter (12) for transmitting a narrowband audio signal to a receiver (14) via a transmission channel (16). The receiver (14) comprises a frequency domain bandwidth extender (18) for extending a bandwidth of the received narrowband audio signal by complementing the received narrowband audio signal with a highband extension thereof. The bandwidth extender (18) comprises an amplitude extender (24) for extending the bandwidth of an amplitude spectrum of the received narrowband audio signal by mapping narrowband amplitudes onto highband amplitudes. The bandwidth extender (18) further comprises a phase extender (26) for extending the bandwidth of a phase spectrum of the received narrowband signal and a combiner (28) for combining the extended amplitude spectrum and the extended phase spectrum into a bandwidth extended audio signal. The transmission system (10) is characterized in that the amplitude extender (24) comprises an amplitude mapper (42) and first and second frequency scale transformers (40,44). The first frequency scale transformer (40) is arranged for transforming a linear frequency scale of the amplitude spectrum into a logarithmic frequency scale, e.g. the Bark scale. The amplitude mapper (42) is arranged for mapping according to the logarithmic frequency scale the narrowband amplitudes onto the highband amplitudes. The second frequency scale transformer (44) is arranged for transforming the logarithmic frequency scale of the extended amplitude spectrum into the linear frequency scale.
摘要翻译：描述了一种传输系统（10），包括用于经由传输信道（16）将窄带音频信号发送到接收机（14）的发射机（12）。接收器（14）包括频域带宽扩展器（18），用于通过用接收的窄带音频信号的高频扩展来补充接收到的窄带音频信号来扩展接收的窄带音频信号的带宽。带宽扩展器（18）包括幅度扩展器（24），用于通过将窄带幅度映射到高频带幅度上来扩展接收的窄带音频信号的幅度谱带宽。带宽扩展器（18）还包括扩展器（26），用于扩展所接收的窄带信号的相位频带的带宽;以及组合器（28），用于将扩展幅度频谱和扩展相位频谱组合成带宽扩展音频信号。传输系统（10）的特征在于，幅度扩展器（24）包括幅度映射器（42）和第一和第二频率比例变换器（40,44）。第一频率比例变换器（40）被布置用于将幅度谱的线性频率范围变换成对数频率标度，例如，吠声鳞片。幅度映射器（42）被布置用于根据对数频率标度将窄带幅度映射到高频带幅度上。第二频率比例变换器（44）被设置为将扩展振幅频谱的对数频谱变换为线性频率标度。

5. 发明申请

WO2007007253A1 AUDIO SIGNAL SYNTHESIS 审中-公开
标题翻译：音频信号合成
公开(公告)号：WO2007007253A1
公开(公告)日：2007-01-18
申请号：PCT/IB2006/052291
申请日：2006-07-06
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V. , DEN BRINKER, Albertus, C. , SLUIJTER, Robert, J.
发明人： DEN BRINKER, Albertus, C. , SLUIJTER, Robert, J.
IPC分类号： G10L19/08
CPC分类号： G10L13/033 , G10L19/093 , G10L2021/0135
摘要： A device (2) for changing the pitch of an audio signal (r), such as a speech signal, comprises a sinusoidal analysis unit (21) for determining sinusoidal parameters of the audio signal (r), a parameter production unit (22) for predicting the phase of a sinusoidal component, and a sinusoidal synthesis unit (23) for synthesizing the parameters to produce a reconstructed signal (r'). The parameter production unit (22) receives, for each time segment of the audio signal, the phase of the previous time segment to predict the phase of the current time segment.
摘要翻译：用于改变诸如语音信号的音频信号（r）的音高的装置（2）包括用于确定音频信号（r）的正弦参数的正弦分析单元（21），参数产生单元（22）用于预测正弦分量的相位;以及正弦合成单元（23），用于合成参数以产生重构信号（r'）。参数产生单元（22）针对音频信号的每个时间段接收前一时间段的相位，以预测当前时间段的相位。

6. 发明申请

WO2003036624A1 METHOD OF TRANSMISSION OF WIDEBAND AUDIO SIGNALS ON A TRANSMISSION CHANNEL WITH REDUCED BANDWIDTH 审中-公开
标题翻译：传输带宽窄带传输信道的宽带音频信号传输方法
公开(公告)号：WO2003036624A1
公开(公告)日：2003-05-01
申请号：PCT/IB2002/004260
申请日：2002-10-10
申请人： KONINKLIJKE PHILIPS ELECTRONICS N.V.
发明人： TAORI, Rakesh , GERRITS, Andreas, J. , SLUIJTER, Robert, J.
IPC分类号： G10L21/02
CPC分类号： G10L19/018 , G10L21/038
摘要： A narrow-band audio signal (9) contains information, present as recognisable distortions, for processing the signal into a wide-band signal. In a method for processing a wide-band audio signal (1) into a narrow-band signal (9), a first spectral portion (4) is maintained unchanged in the narrow-band signal and information (7) usable for restoring remaining spectral portions (5) is embedded (8), preferably perceptually inaudible, by distorting said first spectral portion in a recognisable way, and preferably as a watermark. An encoder for coding a wide-band audio signal (1) into a narrow-band signal (9) and a decoder for decoding a narrow-band audio signal are disclosed, as well as a system for transmitting a wide-band audio signal through a narrow-band transmission channel, a system for storing a wide-band audio signal on a storage medium and retrieving the wide-band signal from storage, and a storage medium carrying a narrow-band audio signal.
摘要翻译：窄带音频信号（9）包含作为可识别失真呈现的信息，用于将信号处理成宽带信号。在将宽带音频信号（1）处理成窄带信号（9）的方法中，第一频谱部分（4）在窄带信号中保持不变，并且可用于恢复剩余频谱的信息（7）通过以可识别的方式使所述第一光谱部分变形，并且优选地以水印的方式，部分（5）被嵌入（8），优选地在听觉上不可听见。公开了一种用于将宽带音频信号（1）编码成窄带信号（9）的编码器和用于解码窄带音频信号的解码器，以及用于通过窄带传输信道，用于在存储介质上存储宽带音频信号并从存储检索宽带信号的系统，以及携带窄带音频信号的存储介质。

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