公开(公告)号：US20160094240A1

公开(公告)日：2016-03-31

申请号：US14496980

申请日：2014-09-25

申请人： Anthony Evan O'Shaughnessy ,  Colin Lyden ,  Joseph Peter Canning

发明人： Anthony Evan O'Shaughnessy ,  Colin Lyden ,  Joseph Peter Canning

IPC分类号： H03M1/12

CPC分类号： H03M1/1245 ,  H03H17/0621 ,  H03H17/0642 ,  H03H17/0664 ,  H03H17/0685

摘要： It is known to perform sample rate conversion. A sample rate converter is arranged to receive digital data at an input sample rate Fs and to output data at an output sample rate Fo, where Fo=Fs/N, and N is decimation factor greater than 1. A problem can arise with sample rate converters when a user wishes to change the decimation rate. Generally a sample rate converter needs to discard the samples in its filter when the decimation rate is changed, and the filter output is unusable until the filter has refilled with values taken at the new decimation rate. The sample rate converter provided here does not suffer from this problem. The sample rate converter includes at least Q channels. Each channel comprises a Qth order filter arranged to select input signals at predetermined intervals from a run of P input signals, and to form a weighted sum of the selected input signals to generate an output value, and where the runs of P input signals of one channel are offset from the runs of P signals of the other channels.

摘要翻译： 已知进行采样率转换。 采样率转换器被布置为以输入采样率Fs接收数字数据，并以输出采样率Fo输出数据，其中Fo = Fs / N，N是抽取因子大于1.可能会出现采样率的问题 转换器，当用户希望改变抽取率时。 通常，抽样速率改变时，采样率转换器需要丢弃其滤波器中的样本，并且滤波器输出不可用，直到滤波器用新的抽取率取值为止。 这里提供的采样率转换器不会受到这个问题的困扰。 采样率转换器至少包括Q个通道。 每个通道包括Q阶滤波器，其布置成从P个输入信号的行程中以预定间隔选择输入信号，并且形成所选输入信号的加权和以产生输出值，并且其中一个P输入信号的运行 通道偏离其他通道的P信号的运行。