Samsung Electronics Co., Ltd.

Keithley Instruments, Inc.

Huawei Technologies Co., Limited

Miao Lei

Junghoe Kim

Eunmi Oh

Ki-hyun Choo

Shihwa Lee

Sangchul Ko

Eun-mi Oh

Dohyung Kim

Sangwook Kim

Jung-hoe Kim

Ennmi Oh

Yang Gao

Miyoung Kim

Chang-yong Son

Jerold A Williamson

Jianxian Yan

Michael Chao

Joseph N Furio

Junghoo Kim

Herve Taddei

Sanwook Kim

Kim Jung-Hoe

Oh Eun-Mi

A method, medium, and apparatus with scalable channel decoding. The method includes recognizing the configuration of channels or speakers, calculating the respective number of same path decoding levels for each multi-channel signal using the recognized configuration of the channels or speakers, and performing decoding and up-mixing according to the calculated respective number of decoding levels.

Method, medium, and apparatus with scalable channel decoding

Surround audio decoding for selectively generating an audio signal from a multi-channel signal. In the surround audio decoding, a down-mixed signal, e.g., as down-mixed by an encoding terminal, is selectively up-mixed to a stereo signal or a multi-channel signal, by generating spatial information for generating the stereo signal, using spatial information for up-mixing the down-mixed signal to the multi-channel signal.

Method, medium, and system generating a stereo signal

A method, medium, and system decoding and/or encoding multiple channels. Accordingly, down-mixed multiple channels can be decoded/up-mixed to a left channel and a right channel during a first stage, thereby enabling a high quality sound output even in scalable channel decoding.

Method, medium, and system decoding and encoding a multi-channel signal

An system, method, and method of encoding/decoding a multi-channel audio signal, including a decoding level generation unit producing decoding-level information that helps a bitstream including a number of audio channel signals and space information to be decoded into a number of audio channel signals, wherein the space information includes information about magnitude differences and/or similarities between channels, and an audio decoder decoding the bitstream according to the decoding-level information. Accordingly, even a single input bitstream can be decoded into a suitable number of channels depending on the type of a speaker configuration used. Scalable channel decoding can be achieved by partially decoding an input bitstream. In the scalable channel decoding, a decoder may set decoding levels and outputs audio channel signals according to the decoding levels, thereby reducing decoding complexity.

System, medium, and method of encoding/decoding multi-channel audio signals

An apparatus for and a method of processing a multi-channel audio signal using space information. The apparatus includes: a main coding unit down mixing a multi-channel audio signal by applying space information to surround components included in the multi-channel audio signal, generating side information using the multi-channel audio signal or a stereo signal of a down-mixed result, coding the stereo signal and the side information, and transmitting the coded result as a coding signal; and a main decoding unit receiving the coding signal, decoding the stereo signal and the side information using the received coding signal, up mixing the decoded stereo signal using the decoded side information, and restoring the multi-channel audio signal.

Apparatus and method for processing multi-channel audio signal using space information

A method, medium, and system generating a 3-dimensional (3D) stereo signal in a decoder by using a surround data stream. According to such a method, medium, and system, a head related transfer function (HRTF) is applied in a quadrature mirror filter (QMF) domain, thereby generating a 3D stereo signal by using a surround data stream.

Method, medium, and system synthesizing a stereo signal

Method, medium, and system for generating a stereo signal

In an embodiment, a method of receiving a digital audio signal, using a processor, includes correcting the digital audio signal from lost data. Correcting includes copying frequency domain coefficients of the digital audio signal from a previous frame, adaptively adding random noise coefficients to the copied frequency domain coefficients, and scaling the random noise coefficients and the copied frequency domain coefficients to form recovered frequency domain coefficients. Scaling is controlled with a parameter representing a periodicity or harmonicity of the digital audio signal. A corrected audio signal is produced from the recovered frequency domain coefficients.

System and method for correcting for lost data in a digital audio signal

A method, medium, and apparatus encoding and/or decoding audio signals. By encoding and/or decoding a high-frequency signal using an excitation signal extracted from a low-frequency signal, coding efficiency can be maximized because sound quality of a signal corresponding to a high-frequency region does not deteriorate when audio signals are encoded or decoded using a low bit amounts or rates.

Method, medium, and apparatus with bandwidth extension encoding and/or decoding

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Yongin-si, South Korea

Miao Lei