Filters the input signal $x[n]$ with the FIR filter.

Parameters:¶

x: ArrayLike¶

The input signal $x[n]$ with length $L$.

mode: 'full' | 'valid' | 'same' = 'full'¶

The non-streaming convolution mode.

• "same": The output signal $y[n]$ has length $L$. Output sample 0 aligns with input sample 0.

• "full": The full convolution is performed. The output signal $y[n]$ has length $L+N$, where $N$ is the order of the filter. Output sample delay aligns with input sample 0.

In streaming mode, the "full" convolution is performed. However, for each $L$ input samples only $L$ output samples are produced per call. A final call to flush() is required to flush the filter state.

Returns:¶

The filtered signal $y[n]$. The output length is dictated by the mode argument.

Examples

See the FIR filters example.