Abstract:
Disclosed is an integrated voice/audio encoding/decoding apparatus whereby the overlap region of a window is adjusted based on the transition interval. In the present invention, encoding is carried out by making windows of relatively long length overlap in order to increase the efficiency of encoding, while the overlap region of the windows is reduced in accordance with the transition interval when there is a transition interval between frames, thereby making it possible to reduce the occurrence of noise due to transition intervals.
Abstract:
Provided are a broadcast transmitting apparatus and a broadcast transmitting method for providing an object-based audio using multi-channel audio encoding and decoding, and a broadcast playback apparatus and a broadcast playback method. The broadcast transmitting apparatus may generate audio identification information for identifying whether a multi-channel audio signal is an object-based audio signal. Then, if the multi-channel audio signal is identified as an object-based audio signal based on the audio identification information, the broadcast playback apparatus may control multi-channel audio signals for each channel and output the signals.
Abstract:
Disclosed are a method and a system for converting a multi-channel audio signal. The multi-channel audio signal converting system may comprise: an output position checking unit for checking an output position for each channel of an output multi-channel audio signal and an input multi-channel audio signal; a signal allocation unit which allocates a channel signal of an input channel to an output channel when output positions of the input and output channels are the same in the output and input multi-channel audio signals; a signal distribution unit which distributes the channel signal of the input multi-channel audio signal to two channels of the output multi-channel audio signal which are closest to a channel of the input multi-channel audio signal; and a channel signal calculation unit which calculates a signal for each channel of the output multi-channel audio signal on the basis of channel signals respectively allocated or distributed to channels of the output multi-channel audio signal.
Abstract:
Disclosed are an audio authoring apparatus and audio playback apparatus for an object-based audio service, and an audio authoring method and audio playback method using same. The audio authoring apparatus and the audio playback apparatus provide an object-based audio service using audio object signals corresponding to the number of audio channels which can be processed by the audio playback apparatus.
Abstract:
Disclosed are an apparatus and method for window processing for connecting between an MDCT frame and a heterogeneous frame, an encoding apparatus and encoding method, and a decoding apparatus and decoding method. The window processing method involves applying, to the MDCT frame, a window for interconnection between the MDCT frame and a frame having no aliasing term, so as to satisfy TDAC conditions for the recovery of an original signal.
Abstract:
Disclosed are an encoding method and encoding device, a decoding method and decoding device and a transcoding method and transcoder for multi-object audio signals. The multi-object audio signal encoding device can provide the listener with satisfactory sound quality by encoding object signals other than the foreground object signals in a plurality of input object signals, and encoding the foreground object signals.
Abstract:
Provided is a method and apparatus for encoding/decoding a multi-channel audio signal. The apparatus for encoding a multi-channel audio signal includes a frame converter for converting the multi-channel audio signal into a framed audio signal; means for downmixing the framed audio signal; means for encoding the downmixed audio signal; a source location information estimator for estimating source location information from the framed multi-channel audio signal; means for quantizing the estimated source location information; and means for multiplexing the encoded audio signal and the quantized source location information, to generate an encoded multi-channel audio signal.