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    • 5. 发明授权
    • Audio-signal correction apparatus, audio-signal correction method and audio-signal correction program
    • 音频信号校正装置,音频信号校正方法和音频信号校正程序
    • US09214162B2
    • 2015-12-15
    • US13410411
    • 2012-03-02
    • Masami Nakamura
    • Masami Nakamura
    • G06F17/00G10L21/0332H03G7/00H03G3/00H03G11/00
    • G10L21/0332G06F17/00H03G3/002H03G7/007H03G11/008
    • Sequential digital audio signals are received to calculate a difference between each currently sampled digital audio signal and another digital audio signal sampled at one sampling period before each currently sampled digital audio signal. Differences for the sequential digital audio signals are stored. The number of digital audio signals consecutively clipped is counted in the received sequential digital audio signals. A specific difference is retrieved, from the stored differences, for a digital audio signal sampled at a specific number of sampling periods before each clipped digital audio signal. The specific number of sampling periods is determined based on the counted number of digital audio signals consecutively clipped. Each clipped digital audio signal is corrected based on the specific difference.
    • 接收顺序数字音频信号以计算每个当前采样的数字音频信号与在每个当前采样的数字音频信号之前的一个采样周期采样的另一数字音频信号之间的差值。 存储顺序数字音频信号的差异。 在接收的顺序数字音频信号中对连续裁剪的数字音频信号的数量进行计数。 对于在每个限幅数字音频信号之前的特定采样周期采样的数字音频信号,从存储的差异中检索特定的差异。 取决于采样周期的具体次数是根据连续剪切的数字音频信号的计数数来确定的。 每个限幅数字音频信号根据具体的差异进行校正。
    • 10. 发明授权
    • Data converting device, program and method
    • 数据转换装置,程序和方法
    • US08368569B2
    • 2013-02-05
    • US12918172
    • 2009-02-20
    • Masami Nakamura
    • Masami Nakamura
    • H03M1/06
    • G11B20/10G11B20/10037G11B2020/00057G11B2020/10546G11B2220/2545H03M1/207
    • A data conversion device is provided with a data converting means that sequentially converts first data into second data of the number of second bits, wherein an analog signal is quantized into the first data by the number of first bits, and the first and second data can be first and second maximum values, respectively. The data converting means is comprised of a first conversion means (steps 21 and 23) that, when a value of the fast data is not the first maximum value, converts the first data to the second data by adding 0 to a lower bit side of the first data and a second conversion means (steps 21 and 24-26) that converts the first data to the second data so that, when a value of the first data is the fast maximum value, a value can be made larger, in accordance with a value be-fore or after the first data, than the data of the number of second bits obtained by adding 0 to the lower bit side of the first data. With the structure, when the data obtained by quantizing an analog signal is converted to data with the number of more bits, a rounding error by quantizing is improved as much as possible.
    • 数据转换装置具有数据转换装置,该数据转换装置将第一数据顺序地转换成第二位数的第二数据,其中模拟信号通过第一位的数量被量化到第一数据中,并且第一和第二数据可以 分别为第一和第二最大值。 数据转换装置包括第一转换装置(步骤21和23),当快速数据的值不是第一最大值时,通过将第一数据添加到第二数据的下位,将第一数据转换为第二数据 第一数据和第二转换装置(步骤21和24-26),其将第一数据转换为第二数据,使得当第一数据的值是快速最大值时,可以根据 比第一数据之前或之后的值高于通过将0加到第一数据的低位侧而获得的第二位数的数据。 利用该结构,当通过量化模拟信号获得的数据被转换成具有更多位数的数据时,尽可能地改进通过量化的舍入误差。