Samsung Electronics Co., Ltd.

Kang Eun Lee

Chang Yong Son

Shi Hwa Lee

Min Soo Kim

Do-Hyung Kim

Do Hun Kim

Eun-mi Oh

Ki-hyun Choo

Ho-sang Sung

Jung-hoe Kim

Eun Mi Oh

Chang-yong Son

Sang Oak Woo

Ho Sang Sung

Raj Narayana Gadde

Sandeep Raju

An apparatus for processing data including a data compressor configured to compress ultrasonic data, and store the compressed ultrasonic data in a memory; and a data decompressor configured to read the stored ultrasonic data from the memory, decompress the read ultrasonic data, and transfer the decompressed ultrasonic data to a processor configured to perform beamforming.

Apparatus and method for processing ultrasonic data

A method and apparatus for processing audio data are provided. When an encoded audio bitstream sampled at a sampling frequency is received, a resampling ratio for processing the encoded audio bitstream is computed. If the the resampling ratio is within the resampling threshold range, then the encoded audio bitstream is processed in frequency domain and a desired number of audio samples per frame are outputted according to the resampling ratio. The encoded audio bitstream is processed in frequency domain using sample rate converter integrated into a filter bank of an audio decoder. If the resampling ratio is outside the resampling threshold range, then the encoded audio bitstream is processed in time domain and a desired number of audio samples per frame are outputted according to the resampling ratio.

Method and apparatus for processing audio data

An audio processing apparatus and method are provided. The audio processing apparatus includes an envelope detector to detect an envelope of an input signal with respect to a low frequency band, and a signal restorer to restore the input signal including a high frequency band by performing frequency folding of frequency sub-band according the envelope.

Apparatus and method with enhancement of sound quality

An apparatus and method for generating a panoramic sound are provided. The panoramic sound generation apparatus may include a panning coefficient calculation unit to calculate a panning coefficient that represents directivity of a sound source using an input signal, a masker determination unit to determine a direction masker that extracts a sound source of a desired direction based on the panning coefficient, and a channel separation unit to separate to be used as an output signal, output to a sound output device, using the direction masker.

Apparatus and method for generating panoramic sound

A method and apparatus for reproducing audio data using low power are provided. The apparatus may reproduce the audio data by determining a power mode based on a memory resource of an internal memory, and an amount of a memory required for reproducing the audio data, controlling a power based on the determined power mode, and decoding the audio data.

Apparatus and method of reproducing audio data using low power

An error concealment method and apparatus for an audio signal and a decoding method and apparatus for an audio signal using the error concealment method and apparatus. The error concealment method includes selecting one of an error concealment in a frequency domain and an error concealment in a time domain as an error concealment scheme for a current frame based on a predetermined criteria when an error occurs in the current frame, selecting one of a repetition scheme and an interpolation scheme in the frequency domain as the error concealment scheme for the current frame based on a predetermined criteria when the error concealment in the frequency domain is selected, and concealing the error of the current frame using the selected scheme.

Error concealment method and apparatus for audio signal and decoding method and apparatus for audio signal using the same

An apparatus and method for decoding audio data. The apparatus for decoding the audio data may perform block data unpacking by preferring a channel order to a block order from a bitstream, and perform dithering through preferring a block order to a channel order. Complexity in decoding may be reduced through integrating bitstream searching and the bock data unpacking, and a dithering error may be prevented through processing the block data unpacking and the dithering separately.

Apparatus and method for decoding audio data

A signal processing apparatus and method providing a 3-dimensional (3D) sound effect may determine a mask related to an ambience of an input signal, separate the input signal into a primary signal and an ambience signal using the mask, decorrelate the ambience signal, and sum the decorrelated ambience signal and the primary signal, accordingly generating an output signal to which a sound effect is applied.

Signal processing apparatus and method for providing 3D sound effect

An apparatus of generating a multi-channel sound signal is provided. The apparatus may include a sound separator to determine a number (N) of sound signals based on at least one of a mixing characteristic and a spatial characteristic of a multi-channel sound signal when receiving the multi-channel sound signal, and to separate the multi-channel sound signal into N sound signals, the sound signals being generated such that the multi-channel sound signal is separated, and a sound synthesizer to synthesize N sound signals to be M sound signals.

Apparatus of generating multi-channel sound signal

A signal processing apparatus and method for providing a spatial impression. The signal processing apparatus applies a reverberation effect to a summed signal formed by summing original signals corresponding to locations of a plurality of sound sources, and removes a correlation from the summed signal, thereby generating reverberation signals corresponding to the locations of the plurality of sound sources. Next, the signal processing apparatus applies panning information derived from the original signals, thereby reflecting location information of the original signals.

Signal processing apparatus and method for providing spatial impression

Provided is an apparatus, method and computer-readable medium generating a vertical direction virtual channel that may apply a vertical direction spectrum shape to a source signal, and generate a vertical direction virtual speaker signal by adjusting a gain with respect to a signal in which the vertical direction spectrum shape is applied, based on virtual speaker direction information.

Apparatus, method and computer-readable medium producing vertical direction virtual channel

A method of multi-path trellis coded quantization (TCQ) usable in a speech coding system, and a quantizer using the method. Specifically the method includes calculating accumulated distortions corresponding to 2N survivor paths, wherein N indicates an integer greater than two, each of the 2N survivor paths is going towards one of nodes at an i th stage of a trellis, and i indicates an integer greater than zero, comparing the accumulated distortions respectively corresponding to the 2N survivor paths to select N paths among the 2N survivor paths, wherein the accumulated distortions corresponding to selected N paths are smaller than the accumulated distortions corresponding to unselected N paths establishing the selected N paths as survivor paths going toward an i+1 th stage, and selecting an optimal path among the 2N survivor paths corresponding to each node of a last stage.

Multi-path trellis coded quantization method and multi-path coded quantizer using the same

A surround sound virtualization apparatus and method. The surround sound virtualization apparatus may include an audio decoder to perform head-related transfer function (HRTF) filtering, and a time delay unit to provide a time delay to a plurality of output signals of the audio decoder.

Surround sound virtualization apparatus and method

A method and apparatus of generating a sound field effect is provided. The sound field effect generating apparatus may generate a frequency coefficient that is frequency-transformed from a direct signal, may generate a reflection signal from the frequency coefficient, may generate an output signal using the frequency coefficient and the reflection signal, and may perform an inverse-frequency transform of the output signal.

Method and apparatus of generating sound field effect in frequency domain

An audio processing apparatus and method for a mobile device are provided. The audio processing apparatus and method may appropriately determine sound source localizations corresponding to a voice signal and an audio signal, and thereby may simultaneously provide a voice call service and a multimedia service. Also, the audio processing apparatus and method may guarantee quality of the voice call service even when simultaneously providing the voice call service and the multimedia service.

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Hwaseong, South Korea

Kang Eun Lee