公开(公告)号：ZA201701428B

公开(公告)日：2018-12-19

申请号：ZA201701428

申请日：2017-02-24

Applicant: PANASONIC IP CORP AMERICA

Inventor： KAWASHIMA TAKUYA ,  EHARA HIROYUKI

公开(公告)号：SG11201701197TA

公开(公告)日：2017-03-30

申请号：SG11201701197T

申请日：2015-07-03

Applicant: PANASONIC IP CORP AMERICA

Inventor： KAWASHIMA TAKUYA ,  EHARA HIROYUKI

IPC: G10L19/035 ,  G10L19/02

Abstract: An audio signal coding apparatus (100) includes a time-frequency transformer (101) that outputs sub-band spectra from an input signal, a sub-band energy quantizer (102), a tonality calculator (103) that analyzes tonality of the sub-band spectra, a bit allocator (104) that selects a second sub-band on which quantization is performed by a second quantizer (107) on the basis of the analysis result of the tonality and quantized sub-band energy, and determines a first number of bits to be allocated to a first sub-band on which quantization is performed by a first quantizer (106), the first quantizer (106) that performs coding using the first number of bits, the second quantizer (107) that performs coding using a pitch filter, and a multiplexer(108).

公开(公告)号：CA2958429A1

公开(公告)日：2016-01-28

申请号：CA2958429

申请日：2015-07-03

Applicant: PANASONIC IP CORP AMERICA

Inventor： KAWASHIMA TAKUYA ,  EHARA HIROYUKI

IPC: G10L19/035 ,  G10L19/02

Abstract: An acoustic signal encoding device (100) comprises: a time-frequency convertor (101) for outputting a sub-band spectrum from an input signal; a sub-band energy quantization unit (102); a tonality calculation unit (103) for analyzing the tonal characteristics of the sub-band spectrum; a bit distributor (104) for selecting a second sub-band to be quantized at a second quantization unit and determining a first bit number distributed to a first sub-band to be quantized at a first quantization unit on the basis of the result of analyzing the tonal characteristics and a quantized sub-band energy; the first quantization unit (106) for encoding using bits having the first bit number; the second quantization unit (107) for encoding using a pitch filter; and a multiplexer (108).

公开(公告)号：ES2749222T3

公开(公告)日：2020-03-19

申请号：ES11840382

申请日：2011-10-26

Applicant: PANASONIC IP CORP AMERICA

Inventor： HORI TAKAKO ,  EHARA HIROYUKI

IPC: H04W28/18 ,  H04L29/06 ,  H04W36/00 ,  H04W76/12 ,  H04W84/04 ,  H04W88/18

Abstract: Un terminal (102) de comunicación, que comprende; un cambiador de modo configurado para cambiar un modo de códec o un conjunto de modos de códec del terminal (100) de comunicación o un terminal (102) asociado que es un destino de comunicación, el terminal (100) de comunicación está configurado para configurarse mediante un mensaje de señalización para negociación recibido desde el terminal (102) asociado cuando comienza la comunicación entre el terminal (100) de comunicación y el terminal (102) asociado, el mensaje de señalización para la negociación de códec incluye un códec y un modo de códec o un conjunto de modos de códec; y un transmisor (2702) configurado para transmitir, durante la comunicación con el terminal (102) asociado, un modo de códec del terminal (100) de comunicación actualmente en uso, utilizando una carga útil del protocolo de transporte en tiempo real RTP, en el que el transmisor (2702) está configurado para transmitir una solicitud de modo de códec CMR para solicitar al terminal (102) asociado que cambie el modo de códec del terminal (102) asociado utilizando la carga útil RTP, la carga útil RTP incluye un campo de solicitud de modo de códec que solo está presente cuando es necesario cambiar el modo de códec o el conjunto de modos de códec del terminal (102) asociado.

公开(公告)号：EP2640052A4

公开(公告)日：2017-11-29

申请号：EP11840382

申请日：2011-10-26

Applicant: PANASONIC IP CORP AMERICA

Inventor： HORI TAKAKO ,  EHARA HIROYUKI

IPC: H04W28/18 ,  H04L29/06 ,  H04W76/02 ,  H04W84/04 ,  H04W88/18

CPC classification number: H04L69/08 ,  H04L69/22 ,  H04L69/24 ,  H04W28/18 ,  H04W36/0083 ,  H04W76/022 ,  H04W84/045 ,  H04W88/181

Abstract: Provided is a terminal capable of determining the status of a communications and selecting an appropriate codec mode without applying a load to either a network or terminals, by using information held by the terminal as negotiation information. A UE (100) sends to a partner the codec mode selected from a plurality of candidate codec modes notified by the partner, when communications commence. The UE (100) comprises: a wireless receiver (600) that receives a first information relating to the characteristics of a network to which the partner is currently connected; an information comparison unit (606) that compares the first information and a second information relating to the characteristics of the network that the UE is currently connected to, and decides the communications format; and a mode determination unit (608) that selects the codec mode to be used, from among the candidates and based on the decided communications format.

公开(公告)号：EP3174050A4

公开(公告)日：2017-05-31

申请号：EP15824312

申请日：2015-07-03

Applicant: PANASONIC IP CORP AMERICA

Inventor： KAWASHIMA TAKUYA ,  EHARA HIROYUKI

IPC: G10L19/02 ,  G10L19/002 ,  G10L19/032 ,  G10L19/035

CPC classification number: G10L19/002 ,  G10L19/0204 ,  G10L19/0208 ,  G10L19/032 ,  G10L19/035

Abstract: An audio signal coding apparatus (100) includes a time-frequency transformer (101) that outputs sub-band spectra from an input signal, a sub-band energy quantizer (102), a tonality calculator (103) that analyzes tonality of the sub-band spectra, a bit allocator (104) that selects a second sub-band on which quantization is performed by a second quantizer on the basis of the analysis result of the tonality and quantized sub-band energy, and determines a first number of bits to be allocated to a first sub-band on which quantization is performed by a first quantizer, the first quantizer (106) that performs coding using the first number of bits, the second quantizer (107) that performs coding using a pitch filter, and a multiplexer (108).

Abstract translation: 一种音频信号编码装置（100），包括：时间 - 频率变换器（101），从输入信号的没有输出子带光谱，一个子带能量量化器（102），一个音调计算器（103）做了分析的分音调 带光谱，（104）做了位分配器选择在哪个量化由第二量化器进行的色调和量化子带能量的分析结果的基础上的第二子带，和bestimmt比特的firstNumber 将被分配到其上的量化由第一量化器执行的第一子带，所述第一量化器（106）没有进行使用的比特的firstNumber，第二量化器（107）确实执行使用音调滤波器编码编码，并 复用器（108）。

公开(公告)号：EP3128513A4

公开(公告)日：2017-03-29

申请号：EP15774034

申请日：2015-03-23

Applicant: PANASONIC IP CORP AMERICA

Inventor： NAGISETTY SRIKANTH ,  LIU ZONG XIAN ,  EHARA HIROYUKI

IPC: G10L19/02 ,  H03M7/30

CPC classification number: G10L19/0208 ,  G10L19/028 ,  G10L19/035 ,  G10L21/038

Abstract: An encoder according to the present disclosure includes a first encoding unit that generates a first encoded signal in which a low-band signal having a frequency lower than or equal to a predetermined frequency from a voice or audio input signal is encoded, and a low-band decoded signal; a second encoding unit that encodes, on the basis of the low-band decoded signal, a high-band signal having a band higher than that of the low-band signal to generate a high-band encoded signal; and a first multiplexing unit that multiplexes the first encoded signal and the high-band encoded signal to generate and output an encoded signal. The second encoding unit calculates an energy ratio between a high-band noise component, which is a noise component of the high-band signal, and a high-band non-tonal component of a high-band decoded signal generated from the low-band decoded signal and outputs the calculated ratio as the high-band encoded signal.

Abstract translation: 根据本公开的编码器包括：第一编码单元，其生成其中编码具有来自语音或音频输入信号的低于或等于预定频率的频率的低频带信号的第一编码信号， 频带解码信号; 第二编码单元，其基于所述低频带解码信号编码具有比所述低频带信号的频带高的频带的高频带信号，以生成高频带编码信号; 以及第一复用单元，其多路复用第一编码信号和高频带编码信号以产生并输出编码信号。 第二编码单元计算作为高频带信号的噪声分量的高频带噪声分量与从低频带产生的高频带解码信号的高频带非音调分量之间的能量比 并将计算出的比值作为高频带编码信号输出。

公开(公告)号：EP2706766A4

公开(公告)日：2015-12-09

申请号：EP12796764

申请日：2012-05-25

Applicant: PANASONIC IP CORP AMERICA

Inventor： HORI TAKAKO ,  EHARA HIROYUKI

IPC: H04W76/04 ,  H04W88/18

CPC classification number: H04W36/0022 ,  H04W72/04 ,  H04W76/041 ,  H04W88/181

Abstract: The objective of the present invention is to suppress deterioration of call quality caused by transcoding without interrupting a call even if a codec used by one of the terminals during communication is changed. A modification determination unit (608), in the case of detecting a modification of a codec used by one terminal of two terminals, determines whether or not to constrain the bandwidth of the first codec using a first codec of the other terminal, and a second codec after modification by the first-mentioned one of the terminals. A signaling generation unit (610) transmits, to the other terminal, signaling for limiting the bandwidth if the bandwidth is to be limited.

公开(公告)号：EP3113181A4

公开(公告)日：2017-03-08

申请号：EP15756036

申请日：2015-02-06

Applicant: PANASONIC IP CORP AMERICA

Inventor： KAWASHIMA TAKUYA ,  EHARA HIROYUKI

IPC: G10L19/028 ,  G10L19/02 ,  G10L21/038

CPC classification number: G10L19/028 ,  G10L19/26

公开(公告)号：EP2500901A4

公开(公告)日：2016-10-12

申请号：EP10829713

申请日：2010-11-11

Applicant: PANASONIC IP CORP AMERICA

Inventor： YAMANASHI TOMOFUMI ,  MORII TOSHIYUKI ,  EHARA HIROYUKI

IPC: G10L19/24 ,  G10L21/02 ,  G10L21/038

CPC classification number: G10L21/038 ,  G10L19/24

Abstract: There is disclosed an encoder apparatus whereby, when a band expanding technique for encoding, based on the spectral data of a lower frequency portion, the spectral data of a higher frequency portion is applied to a lower layer in a hierarchical encoding/decoding system, an efficient encoding can be performed in an upper layer as well, thereby improving the decoded-signal quality. In an encoder apparatus (101), a second layer decoder unit (207) calculates a spectrum (differential spectrum), which is to be encoded in a third layer encoder unit (210) that is an upper layer of the second layer decoder unit (207), by applying such an ideal gain (first gain parameter al) that minimizes the energy of the differential spectrum.