nd4j-backends/nd4j-api-parent/nd4j-api/src/main/java/org/nd4j/linalg/convolution/Convolution.java
public static IComplexNDArray convn(IComplexNDArray input, IComplexNDArray kernel, Type type, int[] axes) {
        return Nd4j.getConvolution().convn(input, kernel, type, axes);
    }
public static IComplexNDArray convn(IComplexNDArray input, IComplexNDArray kernel, Type type, int[] axes) {
        return Nd4j.getConvolution().convn(input, kernel, type, axes);
    }
ND Convolution

@param input  the input to op
@param kernel the kernel to op with
@param type   the opType of convolution
@param axes   the axes to do the convolution along
@return the convolution of the given input and kernel