公开(公告)号：EP1042861B1

公开(公告)日：2013-03-27

申请号：EP98959517.8

申请日：1998-11-19

Applicant: Motorola Mobility LLC

Inventor： KIM, Dae-young

IPC: H04L25/49

CPC classification number: H04J3/125 ,  H04B14/04 ,  H04L25/4927

公开(公告)号：EP1396938A4

公开(公告)日：2007-08-08

申请号：EP02724674

申请日：2002-05-02

Applicant: MATSUSHITA ELECTRIC IND CO LTD

Inventor： BANBA YUTAKA ,  TAKAGI YOSHIAKI

IPC: H03H17/02 ,  G10L19/02 ,  H03M7/30 ,  H03M7/38 ,  H04B1/66 ,  H04B14/04 ,  H04B14/06

CPC classification number: H03M7/3082 ,  G10L19/0204 ,  G10L19/032 ,  G10L25/12 ,  H03M7/3046 ,  H04B1/667 ,  H04B14/04 ,  H04B14/06

Abstract: A sub-band adaptive differential pulse code modulation/encoding apparatus includes means (102, 103, 104, 105) having a predetermined asymmetric impulse response for receiving an audio signal and band-dividing the received audio signal into a predetermined number of sub-bands, so as to obtain a plurality of band-divided sub-band audio signal, a plurality of quantization means (110, 111, 112, 113) for quantizing the band-divided sub-band audio signals by a predetermined divider, and encoding means (115) for performing adaptive differential pulse code modulation/encoding of the quantized sub-band audio signals.

公开(公告)号：EP1298643B1

公开(公告)日：2005-05-11

申请号：EP01936970.1

申请日：2001-06-12

Applicant: KABUSHIKI KAISHA KENWOOD

Inventor： SATO, Yasushi

IPC: G10L13/00 ,  H04B14/04 ,  G10L21/02

CPC classification number: H04B1/662 ,  G10L19/02 ,  G10L21/038 ,  H04B14/04

Abstract: The spectrum of a PCM signal is separated into bands. A combination is designated out of the combinations of the reference band including the highest frequency and the other bands so that the designated combination has the highest correlation of spectrum distribution when one of the reference band and the other band is normalized. The spectrum of the same distribution as the spectrum distribution in the reference band of the designated combination is so scaled that the spectrum is along the function expressing the envelope, and the scaled spectrum is added to the higher-frequency side of the reference band to generate an output signal. The PCM signal is checked for a high-frequency part. Only if a high-frequency part is detected, a spectrum component is added and an output signal is generated. Thus a signal approximated to the original signal can be restored from one of a signal representing a signal having a suppressed spectrum component in part of the bands of the original signal and the signal representing the original signal that does not originally contain the spectrum component of the band and even from a signal containing both signals.

Abstract translation: PCM信号的频谱被分成多个频带。 在包括最高频率的参考频带和其他频带的组合中指定组合，使得当参考频带和另一频带中的一个被归一化时，指定组合具有最高频谱分布的相关性。 与指定组合的参考频带中的频谱分布相同的分布的频谱被缩放以致频谱沿着表达包络的函数，并且缩放频谱被添加到参考频带的较高频率侧以生成 一个输出信号。 PCM信号检查高频部分。 只有在检测到高频部分时，才会添加频谱分量并生成输出信号。 因此，可以从表示原始信号的部分频带中具有受抑制的频谱分量的信号的信号和表示原本不包含该原始信号的频谱分量的原始信号的信号中的一个恢复来接近原始信号的信号 甚至来自包含两个信号的信号。

公开(公告)号：EP1404039A2

公开(公告)日：2004-03-31

申请号：EP03029484.7

申请日：2000-04-20

Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

Inventor： Kawamura, Akihisa ,  Ejima, Naoki ,  Shimbo, Masatoshi

IPC: H04B14/04 ,  H04H1/00

CPC classification number: H04B14/04 ,  G10L19/00 ,  G11B20/10527 ,  G11B2020/00014 ,  G11B2020/10546

Abstract: A method for transferring audio data and audio-related information includes: a generation step of generating second audio data from first audio data; a transmission step of transmitting the second audio data and audio-related information associated with the second audio data; and a reception step of receiving the second audio data and the audio-related information, wherein the audio-related information includes information representing a sampling frequency of the first audio data.

Abstract translation: 该方法涉及分析音频数据，生成适当的音频相关信息和调制的音频数据。 与音频数据相关的音频数据和音频相关信息，反式mitted。 的音频数据和表示音频数据的传送速度的音频相关信息包括信息被接收。 传送速度被显示在显示器（26）上。 因此独立claimsoft被包括用于在音频数据/音频相关信息的传送设备。

公开(公告)号：EP1298643A4

公开(公告)日：2003-12-10

申请号：EP01936970

申请日：2001-06-12

Applicant: KENWOOD CORP ,  KENWOOD GEOBIT CORP

Inventor： SATO YASUSHI

IPC: G10L19/02 ,  G10L21/038 ,  H04B1/66 ,  H04B14/04 ,  G10L13/00 ,  G10L21/02

CPC classification number: H04B1/662 ,  G10L19/02 ,  G10L21/038 ,  H04B14/04

Abstract: The spectrum of a PCM signal is separated into bands. A combination is designated out of the combinations of the reference band including the highest frequency and the other bands so that the designated combination has the highest correlation of spectrum distribution when one of the reference band and the other band is normalized. The spectrum of the same distribution as the spectrum distribution in the reference band of the designated combination is so scaled that the spectrum is along the function expressing the envelope, and the scaled spectrum is added to the higher-frequency side of the reference band to generate an output signal. The PCM signal is checked for a high-frequency part. Only if a high-frequency part is detected, a spectrum component is added and an output signal is generated. Thus a signal approximated to the original signal can be restored from one of a signal representing a signal having a suppressed spectrum component in part of the bands of the original signal and the signal representing the original signal that does not originally contain the spectrum component of the band and even from a signal containing both signals.

Abstract translation: PCM信号的频谱被分成多个频带。 在包括最高频率的参考频带和其他频带的组合中指定组合，使得当参考频带和另一频带中的一个被归一化时，指定组合具有最高频谱分布的相关性。 与指定组合的参考频带中的频谱分布相同的分布的频谱被缩放以致频谱沿着表达包络的函数，并且缩放频谱被添加到参考频带的较高频率侧以生成 一个输出信号。 PCM信号检查高频部分。 只有在检测到高频部分时，才会添加频谱分量并生成输出信号。 因此，可以从表示原始信号的部分频带中具有受抑制的频谱分量的信号的信号和表示原本不包含该原始信号的频谱分量的原始信号的信号中的一个恢复来接近原始信号的信号 甚至来自包含两个信号的信号。

公开(公告)号：EP1298643A1

公开(公告)日：2003-04-02

申请号：EP01936970.1

申请日：2001-06-12

Applicant: KABUSHIKI KAISHA KENWOOD ,  Kenwood Geobit Corporation

Inventor： SATO, Yasushi

IPC: G10L13/00 ,  H04B14/04

CPC classification number: H04B1/662 ,  G10L19/02 ,  G10L21/038 ,  H04B14/04

Abstract: The spectrum of a PCM signal is divided into bands. Combinations of a reference band inclusive of a highest frequency band and another band, one of the reference band and other band being normalized, are checked to identify a combination having a highest spectrum distribution correlation. The spectrum having the same distribution as the spectrum distribution of the reference band contained in the identified combination is scaled along an envelope function and added to a higher frequency side than the reference band to generate an output signal. A presence/absence of high frequency components of a PCM signal is detected. Only if there are high frequency components, the spectrum components are added to generate an output signal. It is therefore possible to recover a signal approximate to the original signal from either an original signal with the spectrum components in some bands being suppressed or a signal representative of an original signal containing no spectrum components in the bands or from a signal combining these two signals.

Abstract translation: PCM信号的频谱被划分成频带。 检查包括最高频带的参考频带和参考频带和其他频带之一被归一化的另一个频带的组合，以识别具有最高频谱分布相关性的组合。 具有与包含在所识别的组合中的参考频带的频谱分布相同的分布的频谱沿着包络函数缩放并且被添加到比参考频带更高的频率侧以生成输出信号。 检测PCM信号的高频分量的存在/不存在。 只有存在高频分量时，才会将频谱分量相加以生成输出信号。 因此，有可能从原始信号中恢复近似于原始信号的信号，该原始信号具有被抑制的某些频带中的频谱分量或者表示频带中不包含频谱分量的原始信号的信号，或者来自组合这两个信号的信号 。

公开(公告)号：EP0953966A3

公开(公告)日：2000-10-11

申请号：EP99108715.6

申请日：1999-04-30

Applicant: NEC CORPORATION

Inventor： Shinta, Minoru, c/o NEC Miyagi, Ltd.

IPC: G10L3/00 ,  H04M11/06

CPC classification number: G10L19/24 ,  G10L19/20 ,  H03M5/02 ,  H03M7/30 ,  H04B14/04 ,  H04M11/066

Abstract: A voice signal or a modem signal input into a transmitter is coded, and the coded signal is transmitted from the transmitter to a receiver through a digital transmission line. In this voice coding apparatus, when the input modem signal is a modem signal output from a high-speed modem, it is transmitted without low bit rate compression. By virtue of this constitution, the voice coding apparatus can realize high-speed modem transmission not involving a lowering in transmission speed.

Abstract translation: 输入到发射机的语音信号或调制解调器信号被编码，并且编码信号通过数字传输线从发射机传输到接收机。 在该话音编码装置中，当输入调制解调器信号是从高速调制解调器输出的调制解调器信号时，它在没有低比特率压缩的情况下被发送。 通过这种结构，语音编码装置可以实现不涉及降低传输速度的高速调制解调器传输。

公开(公告)号：EP0663762B1

公开(公告)日：1999-02-24

申请号：EP94309763.4

申请日：1994-12-23

Applicant: Oki Electric Industry Co., Ltd.

Inventor： Komoto, Eiji, c/o Oki Elec. Ind. Co. Ltd.

IPC: H04N1/64 ,  H03M7/30 ,  H03M7/40

CPC classification number: H04B14/04 ,  H04N19/124 ,  H04N19/126 ,  H04N19/60

公开(公告)号：EP0806848A2

公开(公告)日：1997-11-12

申请号：EP97300689.3

申请日：1997-02-04

Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

Inventor： Takita, Maho

IPC: H04B14/04

CPC classification number: H04B14/04

Abstract: A voice encoding/decoding apparatus has a data buffer holding voice data and encoded data, a decoding process unit which receives the voice data of one subframe from the data buffer to decodes the same and outputs obtained encoded data of one subframe to the data buffer, a decoding process unit which receives the encoded data of one subframe from the data buffer to decodes the same and outputs obtained voice data of one subframe to the data buffer, a frame synchronization detecting unit, a first clock generating unit providing timing of inputting/outputting the voice data to/from the data buffer, a second clock generating unit providing timing of inputting/outputting the encoded data to/from the data buffer, a word transfer information providing unit providing the number of words of the voice data and the number of words of the encoded data to be inputted/outputted to/from the data buffer, and information about positions of the voice data and the encoded data in the data buffer, and a control unit minimizing a time required from an inputting to an outputting of the data upon encoding and decoding the data of each subframe on the basis of the information provided by the word transfer information providing unit.

公开(公告)号：EP0681379A1

公开(公告)日：1995-11-08

申请号：EP95200797.9

申请日：1995-03-29

Applicant: Koninklijke PTT Nederland N.V.

Inventor： van den Brink, Wilhelmus Albertus Christianus ,  Dignum, Robertus Laurentius Maria ,  Emons, Michel Johannes Wilhelmus Maria

IPC: H04B14/04

CPC classification number: H04B14/04

Abstract: Method of calculating the transmission quality of a series of cascaded codecs. For each type of codec, a function is determined which is specific for the relationship between the Q-equivalent over a series of codecs of that same type and the number of codecs which said series comprises. In addition, the type sequence is determined of the series of codecs such as those cascaded in the transmission medium. The series is traversed in steps and, starting from the Q-equivalent for one codec of the type which occurs as the first in the series of codecs, the Q-equivalent is always calculated over the traversed part of the series by calculating, starting from the Q-equivalent calculated last, the next Q-equivalent under the control of the function which is specific for the type of the last codec in said part which has been traversed. The Q-equivalent finally calculated for the entire codec series is converted into an MOS value which is a measure of the subjective quality of the codec series.

Abstract translation: 计算一系列级联编解码器的传输质量的方法。 对于每种类型的编解码器的，功能是确定性的开采所有其特异于在一系列的编解码器那样相同的类型和其中所述系列包括编解码器的数量的Q-当量之间的关系。 此外，该类型序列确定性开采的系列编解码器：如那些在传输介质级联。 该系列步骤遍历，从Q-等效的量，发生如在串联的编解码器的第一类型的一个编解码器开始，Q-等效总是通过计算，从开始计算在系列中的横穿部分 所述Q-等效算出的负载，该功能的所有控制，其特异于在所述部件的负荷编解码器已遍历的类型下的下一个Q-当量。 所述Q-等效最终计算用于整个编解码器串联的MOS值全部是编解码器系列的主观质量的量度转换成。