FIR-LPF-1kHz.v.bak

module FIR_Filter (
    input wire [15:0] AUD_IN,
    output wire [15:0] AUD_OUT
);
    // Filter coefficients (adjust according to desired filter characteristics)
    parameter [15:0] COEFFS [0:2] = '{16'h0ABC, 16'h1234, 16'h5678};

    // Internal signals
    reg [15:0] delay_line [0:2];

    always @(AUD_IN) begin
        // Shift values in delay line
        delay_line[2] <= delay_line[1];
        delay_line[1] <= delay_line[0];
        delay_line[0] <= AUD_IN;

        // Filter output computation
        AUD_OUT <= (COEFFS[2] * delay_line[2]) + (COEFFS[1] * delay_line[1]) + (COEFFS[0] * delay_line[0]);
    end
endmodule