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Moriya Takehiro, Harada Noboru, Jin Akio, Ikeda Kazunaga: (Ja) ディジタル信号処理方法、その処理器、そのプログラム、及びそのプログラムを格納した記録媒体, (En) Digital signal processing method, processor thereof, program thereof, and recording medium containing the program. Nippon Telegraph And Telephone Corporation, Moriya Takehiro, Harada Noboru, Jin Akio, Ikeda Kazunaga, KUSANO Takashi, June 3, 2004: WO/2004/047305 (31 worldwide citation)

(EN) From a sample SFC of a current frame, a sample string S similar to its head, sample string, and an end sample string is extracted, concatenated before and after the current frame as a substitute sample string AS, and subjected to filter processing or prediction encoding so as to obtain a proces ...


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Moriya Takehiro, Mori Takeshi, Ikeda Kazunaga, Iwakami Naoki: Multichannel acoustic signal coding and decoding methods and coding and decoding devices using the same. Nippon Telegraph & Telephone, August 12, 1998: EP0858067-A2 (26 worldwide citation)

In multichannel acoustic signal coding and decoding, left-and right-channel signals are alternately interleaved for each sample to generate a one-dimensional signal sample sequence. The one-dimensional signal sample sequence is subjected to coding based on correlation. In coding, the left- and right ...


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Jin Akio, Moriya Takehiro, Ikeda Kazunaga, Mori Takeshi: Sound encoding method, decoding method, encoding device, decoding device, encoding program, and decoding program. Nippon Telegr &Amp Teleph Corp &Lt Ntt&Gt, August 29, 2003: JP2003-241799 (17 worldwide citation)

PROBLEM TO BE SOLVED: To provide a sound encoding method which applies scalable encoding and suppresses sound quality deterioration even in a state wherein a packet loss is generated.SOLUTION: Waveforms are cut out of an input sound signal at specified time intervals (step 101) and a scalable encodi ...


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Moriya Takehiro, Jin Akio, Ikeda Kazunaga, Mori Takeshi: Digital signal encoding method, decoding method, encoding device, decoding device, digital signal encoding program, and decoding program. Nippon Telegraph & Telephone, December 8, 2004: EP1484841-A1 (12 worldwide citation)

A down sampler 13 down samples a digital signal in the sampling frequency thereof from 96 kHz to 48 kHz on a frame-by-frame basis. The converted signal is compression encoded and output as a main code Im. An up sampler 16 converts a partial signal corresponding to the main code Im to a signal having ...


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Moriya Takehiro, Jin Akio, Ikeda Kazunaga, Mori Takeshi: Encoding method for digital signal, decoding method therefor, apparatus for the methods and program thereof. Nippon Telegr &Amp Teleph Corp &Lt Ntt&Gt, November 21, 2003: JP2003-332914 (7 worldwide citation)

PROBLEM TO BE SOLVED: To provide an encoding method capable of correcting missing bits.SOLUTION: In the method, coordinate bit strings are created by combining bits over a frame by corresponding bits of a series of samples by frames of an input digital signal, and the coordinate bit strings are outp ...


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Moriya Takehiro, Jin Akio, Ikeda Kazunaga, Mori Takeshi: Digital signal encoding method, decoding method, encoder, decoder, digital signal encoding program, and decoding program. Nippon Telegr &Amp Teleph Corp &Lt Ntt&Gt, October 14, 2004: JP2004-289196 (4 worldwide citation)

PROBLEM TO BE SOLVED: To provide a encoding method for compressing the information of a digital signal without causing distortion and selecting a hierarchically configured sampling rate, a decoding method, an encoder, a decoder, and programs for them.SOLUTION: A down sampling section 13 converts the ...


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Moriya Takehiro, Jin Akio, Ikeda Kazunaga, Mori Takeshi: Digital signal encoding method, decoding method, encoding device, decoding device, digital signal encoding program, and decoding program. Nippon Telegraph And Telephone Corporation, Moriya Takehiro, Jin Akio, Ikeda Kazunaga, Mori Takeshi, KUSANO Takashi, September 18, 2003: WO/2003/077425 (3 worldwide citation)

The sampling frequency of a digital signal is converted from 96 kHz to 48 kHz for each frame by a down-sampling unit (13). The signal converted is compressed/encoded and output as a main code Im. A local signal corresponding to the main code Im is converted to a signal of sampling frequency of, for ...


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Moriya Takehiro, Jin Akio, Ikeda Kazunaga: Encrypting method, decrypting method, encrypting device, decrypting device, encrypting program, and decrypting program. Nippon Telegr &Amp Teleph Corp &Lt Ntt&Gt, May 27, 2004: JP2004-151433 (2 worldwide citation)

PROBLEM TO BE SOLVED: To improve the compression efficiency of information.SOLUTION: An encrypting device comprises a process for forming a plurality of groups by combining groups in which samples in at least one frame are rearranged and groups in which samples are not rearranged, a process for gene ...


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Moriya Takehiro, Harada Noboru, Jin Akio, Ikeda Kazunaga: Digital signal processing method, its program, and recording medium storing the program. Nippon Telegr &Amp Teleph Corp &Lt Ntt&Gt, February 22, 2007: JP2007-047813 (2 worldwide citation)

PROBLEM TO BE SOLVED: To maintain continuity and efficiency with substantially no degradation by concluding filter processing requiring processing extending over preceding and succeeding frames, like, for example, an interpolation filter, autoregressive prediction coding, and decoding in only the cu ...


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Moriya Takehiro, Jin Akio, Mori Takeshi, Ikeda Kazunaga: Digital signal coding and decoding methods and apparatuses and programs therefor. Nippon Telegraph & Telephone, March 12, 2003: EP1292036-A2 (1 worldwide citation)

At the coder side, bits of samples of each frame of an input digital signal are concatenated every digit common to the samples across each frame to generate equi-order bit sequences, which are output as packets. At the decoding side, the input equi-order sequences are arranged inversely to their arr ...