Lg Electronics Inc.

Yonsei University

Intellectual Discovery Co., Ltd.

Yang Won Jung

Hyen O Oh

Jae Hyun Lim

Dong Soo Kim

Hee Suk Pang

Hyen-O Oh

Myung Hoon Lee

Hyo Jin Kim

Jong Ha Moon

Joon Il Lee

Christof Faller

Chang Heon Lee

Hong Goo Kang

Chul Soo Lee

Sung Young Yoon

Hee Suck Pang

Jeongook Song

Alexis Favrot

Hyeon O Oh

Chirstof Faller

Sang Wook Shin

Jeong Ook Song

Hyon-O Oh

Hee-Suk Pang

Chirsluf Faller

Jung Wook Song

A method of processing an audio signal is provided. A decoding apparatus receives the audio signal, which includes a plurality of objects. The decoding apparatus further receives object information, object gain information, and object correlation information, preset presence information, preset number information, preset information based on the preset presence information and the preset number information, and preset rendering data. The preset information exists in a header region or in each frame. The decoding apparatus obtains a preset matrix from the user by an input unit of the audio decoding apparatus when the preset type information indicates the preset rendering data is defined by the user, and adjusts an output level of the plurality of objects for an output channel based on the object information and the preset matrix. The decoding apparatus outputs an adjusted audio signal including the plurality of objects with an adjusted output level.

Method and an apparatus for processing an audio signal

An apparatus for processing an audio signal and method thereof, the method including receiving a downmix signal including at least one normal object signal, and a bitstream including object information determined when the downmix signal is generated; extracting, from an extension part of the bitstream, an extension type identifier indicating whether the downmix signal further includes a multi-channel object signal; generating spatial information using the object information and mix information when mode information indicates that the multi-channel object signal is to be suppressed and the extension type identifier indicates that the downmix signal further includes the multi-channel object signal; and transmitting spatial information. The mix information is to control an object position or an object level of the at least one normal object signal.

A method of processing an audio signal, the method including receiving a downmix signal including at least one object signal, and object information extracted when the downmix signal is generated, the at least one object signal including a background object and at least one independent object; receiving mix information including mode selection information, the mix information for controlling the at least object signal; receiving enhanced object information corresponding to a residual signal generated when the at least one object signal is downmixed to the downmix signal; generating downmix processing information by using the object information and the mix information; generating an output signal by applying the downmix processed information to the downmix signal; and extracting the background object and the at least one independent object from the downmix signal, by using the enhanced object information.

A method for processing an audio signal at an audio decoder, the method including receiving a downmix signal, a residual signal, and object information; extracting a background-object signal and a foreground-object signal from the downmix signal using the residual signal and object information; receiving mix information including gain information for the background-object signal; generating a downmix processing information based on the object information and the mix information; and generating an output signal including a modified background-object signal and a modified foreground-object signal. The modified background-object signal is obtained by modifying a gain of the background-object signal using the mix information. The modified foreground-object signal is obtained by modifying a gain of the foreground-object signal using the downmix processing information.

An apparatus for processing an audio signal and method thereof, the method including receiving a downmix signal including at least one normal object signal, and a bitstream including object information determined when the downmix signal is generated; extracting an extension type identifier indicating whether the downmix signal further includes a multi-channel object signal, from an extension part of the bitstream; extracting spatial information from the bitstream when the extension type identifier indicates that the downmix signal further includes the multi-channel object signal; and transmitting spatial information when mode information indicates that the least one normal object signal is to be suppressed. The spatial information is determined when a multi-channel source signal is downmixed into the multi-channel object signal. The mix information is to control an object position or an object level of the at least one normal object signal.

A method of processing an audio signal, the method including receiving a downmix signal and a first information, the downmix signal including at least one object, the first information including object information indicating an attribute of the at least one object; receiving a second information, the second information including external preset information and applied object number information, the external preset information being an external input and including an external preset rendering parameter and external preset metadata, the applied object number information indicating a number of objects to which the external preset information is applied; generating downmix processing information controlling panning or gain of the downmix signal by using the object information and the external preset information based on the applied object number information; and modifying the downmix signal by using the downmix processing information.

A method for decoding an audio signal, receiving a downmix signal having at least one independent object and a background object downmixed therein receiving object information and enhanced object information, wherein the object information includes at least one of level information and correlation information between the independent object and the background object, wherein the enhanced object information includes a residual signal extracting the at least one independent object and the background object from the downmix signal using the object information and the enhanced object information receiving mix information from a user, the mix information being usable to control gain or panning of the independent object or the background object generating downmix processing information using at least one of the object information and enhanced object information processing at least one independent object and the background object using at least one of the downmix processing information and the mix information.

Method and apparatus for processing an audio signal

A method of processing an audio signal, and which includes a receiving object information including object level information indicating a level of objects, object gain information and object correlation information; receiving preset presence information and preset number information; receiving preset information based on the preset presence information and the preset number information by an audio decoding apparatus, the preset information including preset metadata representing an attribute mode of the preset information, preset rendering data and preset type information indicating whether the preset rendering data is in a matrix type or not obtaining a preset matrix from the preset rendering data by the audio decoding apparatus, and generating a processed audio signal by controlling a gain or panning of the at least one object included in the audio signal based on the downmix processing information.

An audio signal processing method is disclosed. The audio signal processing method includes receiving a residual and long term prediction information, performing inverse frequency mapping with respect to the residual to generate a synthesized residual, and performing long term synthesis based on the synthesized residual and the long term prediction information to generate a synthesized audio signal of a current frame, wherein the long term prediction information comprises a final prediction gain and a final pitch lag, the final pitch lag has a range starting with 0, and the long term synthesis is performed based on a synthesized audio signal of a frame comprising a preceding frame.

Method and apparatus for processing audio signals

A method for processing an audio signal is disclosed. The method for processing an audio signal includes frequency-transforming an audio signal to generate a frequency-spectrum, deciding a weighting per band corresponding to energy per band using the frequency spectrum, receiving a masking threshold based on a psychoacoustic model, applying the weighting to the masking threshold to generate a modified masking threshold, and quantizing the audio signal using the modified masking threshold.

A method of processing a signal, which includes receiving at least one of a first signal and a second signal, receiving mode information, and decoding the at least one of the first signal and the second signal using at least one of a first coding scheme and a second coding scheme according to the mode information. Further, the mode information is information for indicating that a prescribed mode corresponds to which one of at least three modes.

Method and an apparatus for processing speech, audio, and speech/audio signal using mode information

A method and apparatus for signal processing which enable data compression and recovery with high transmission efficiency are disclosed. Data coding and entropy coding are performed with correlation and grouping is used to increase coding efficiency. A method for signal processing according to this invention, the method includes decapsulating the signal received over an Internet protocol network, obtaining data coding identification information from the de-capsulated signal and data-decoding data according to a data coding scheme indicated by the data coding identification information, wherein the data coding scheme includes at least a pilot coding scheme, the pilot coding scheme decodes the data using a pilot reference value corresponding to a plurality of data and a pilot difference value, and the pilot difference value is generated using the data and the pilot reference value.

Method of processing a signal and apparatus for processing a signal

A method and apparatus for processing an audio signal is disclosed. Herein, the method includes receiving a downmix information having at least one independent object and a background object downmixed therein; receiving an object information and a mix information; and extracting at least one independent object from the downmix information using the object information and the enhanced object information.

An encoding method and apparatus and a decoding method and apparatus are provided. The decoding method includes extracting an arbitrary down-mix signal and compensation information necessary for compensating for the arbitrary down-mix signal from the input bitstream, compensating for the arbitrary down-mix signal using the compensation information, and generating a three-dimensional (3D) down-mix signal by performing a 3D rendering operation on the compensated arbitrary down-mix signal. Accordingly, it is possible to efficiently encode multi-channel signals with 3D effects and to adaptively restore and reproduce audio signals with optimum sound quality according to the characteristics of an audio reproduction environment.

Apparatus and method for encoding/decoding signal

A method and apparatus for processing an audio signal is disclosed. Herein, the method includes receiving a downmix information having at least two independent objects and a background object downmixed therein; separating the downmix information into a first independent object and a temporary background object using a first enhanced object information; and extracting a second independent object from the temporary background object using a second enhanced object information.

Growing community of inventors

Seoul, South Korea

Yang Won Jung