DECODING DEVICE, DECODING METHOD, AND PROGRAM

    公开(公告)号:US20210359703A1

    公开(公告)日:2021-11-18

    申请号:US17265171

    申请日:2019-06-05

    Abstract: The present technology relates to a technology for improving the efficiency of a tactile reproduction system by reducing the amount of data for a tactile signal while tactile reproducibility is ensured.
    A decoding device according to the present technology includes a decoding unit configured to decode a tactile signal encoded for each of frequency bands. This enables efficient encoding in which bit distribution for a tactile signal which is difficult for humans to perceive due to the tactile properties is reduced.

    Encoding device and method, decoding device and method, and program

    公开(公告)号:US10049677B2

    公开(公告)日:2018-08-14

    申请号:US15500253

    申请日:2015-07-23

    Abstract: The present technology relates to an encoding device and a method, a decoding device and a method, and a program that enables acquisitions of high-quality sound even in a resource-poor setting.A demultiplexer demultiplexes a supplied code string, to obtain the quantized low-band spectrum, the spectral characteristic code, and the quantized expansion coefficient(s). At this point, the code string includes a single quantized expansion coefficient or quantized expansion coefficients of the respective bands in the high band depending on the spectral characteristic code. A spectral inverse quantization unit obtains the low-band spectrum by inversely quantizing the quantized low-band spectrum. An expansion coefficient inverse quantization unit obtains the expansion coefficient(s) by inversely quantizing the quantized expansion coefficient(s). An expanded spectrum generation unit generates an expanded spectrum, in accordance with the low-band spectrum and the expansion coefficient(s) depending on the spectral characteristic code. An IMDCT unit generates a band-expanded time-series signal from the low-band spectrum and the expanded spectrum. The present technology can be applied to decoding devices.

    ENCODING DEVICE, ENCODING METHOD, DECODING DEVICE, DECODING METHOD, AND PROGRAM

    公开(公告)号:US20210272426A1

    公开(公告)日:2021-09-02

    申请号:US17254566

    申请日:2019-04-25

    Abstract: To reduce a data amount required for tactile presentation while enabling driving of different types of tactile presentation devices corresponding to different physical amounts.
    An encoding device according to the present technology is provided with an encoding unit that generates coded data by performing encoding to compress an information amount by utilizing an interconversion property between physical amounts on a plurality of tactile signals representing different physical amounts. This makes it possible to obtain the tactile signals representing desired physical amounts within a range in which interconversion may be performed while compressing the information amount by utilizing the interconversion property between the physical amounts.

    Audio coding/decoding method and apparatus using excess quantization information

    公开(公告)号:USRE48272E1

    公开(公告)日:2020-10-20

    申请号:US15434964

    申请日:2017-02-16

    Abstract: There is provided an audio coding device which appropriately sets the quantization bit number by a small calculation amount in each stage when coding an input audio signal by performing multi-stage normalization/quantization. A quantization information calculation section determines total quantization information idwl0, based on normalization information idsf, and allocates the total quantization information idwl0 for quantization information idwl1 and quantization information idwl2. At this time, the quantization information calculation section limits the quantization information idwl1 by a limiter lim1, and allocates the total quantization information idwl0 for quantization information idwl1. If the quantization information idwl1 exceeds the limiter lim1, the excess is allocated for the quantization information idwl2. A first normalization section and a first quantization section normalizes and quantizes a frequency spectrum mdspec1 in the first stage. A second normalization section and a second quantization section normalizes and quantizes a differential frequency spectrum mdspec2 in the second stage.

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