FIR filter design for producing bass and treble sound on FPGA (verilog user)

I suggest you use FDA tool to generate the .m file only for the filter and using it store the coefficients onto a file by putting a break point. Load this coefficient file in the FIR compiler and set different parameters as I have already told you and generate the .vhd/.v file as per your requirement. . So your filter is ready. All you have to do in MATLAB is generate the filter coefficients according to your requirements that's all and then do the rest in the latest version of the QUARTUS.