Apparatus and method of encoding audio signal by switching frequency domain transformation scheme and time domain transformation scheme
    9.
    发明申请
    Apparatus and method of encoding audio signal by switching frequency domain transformation scheme and time domain transformation scheme 审中-公开
    通过切换频域变换方案和时域变换方案对音频信号进行编码的装置和方法

    公开(公告)号:US20110087494A1

    公开(公告)日:2011-04-14

    申请号:US12588297

    申请日:2009-10-09

    IPC分类号: G10L19/00

    摘要: Provided are an apparatus of encoding an audio signal by switching a time domain transformation scheme and a frequency domain transformation scheme, and an apparatus of decoding an audio signal by switching the time domain transformation scheme and the frequency domain transformation scheme. When any one transformation scheme of the time domain transformation scheme and the frequency domain transformation is switched into the other transformation scheme, an audio signal before and after the switching is encoded using an additionally transformed audio signal, or an encoded audio signal is decoded.

    摘要翻译: 提供了一种通过切换时域变换方案和频域变换方案对音频信号进行编码的装置,以及通过切换时域变换方案和频域变换方案对音频信号进行解码的装置。 当时域变换方案和频域变换的任何一个变换方案被切换到另一变换方案时,使用附加变换的音频信号对切换之前和之后的音频信号进行编码,或对编码的音频信号进行解码。

    Context-based arithmetic encoding apparatus and method and context-based arithmetic decoding apparatus and method
    10.
    发明申请
    Context-based arithmetic encoding apparatus and method and context-based arithmetic decoding apparatus and method 有权
    基于上下文的算术编码装置和方法以及基于上下文的算术解码装置和方法

    公开(公告)号:US20100324912A1

    公开(公告)日:2010-12-23

    申请号:US12801632

    申请日:2010-06-17

    IPC分类号: G10L19/00

    摘要: Disclosed are a context-based arithmetic encoding apparatus and method and a context-based arithmetic decoding apparatus and method. The context-based arithmetic decoding apparatus may determine a context of a current N-tuple to be decoded, determine a Most Significant Bit (MSB) context corresponding to an MSB symbol of the current N-tuple, and determine a probability model using the context of the N-tuple and the MSB context. Subsequently, the context-based arithmetic decoding apparatus may perform a decoding on an MSB based on the determined probability model, and perform a decoding on a Least Significant Bit (LSB) based on a bit depth of the LSB derived from a process of decoding on an escape code.

    摘要翻译: 公开了一种基于上下文的算术编码装置和方法以及基于上下文的算术解码装置和方法。 基于上下文的算术解码装置可以确定要解码的当前N元组的上下文,确定与当前N元组的MSB符号相对应的最高有效位(MSB)上下文,并使用上下文确定概率模型 的N元组和MSB上下文。 随后,基于上下文的算术解码装置可以基于所确定的概率模型对MSB执行解码,并且基于从解码处理导出的LSB的位深度对最低有效位(LSB)执行解码 一个转义码。