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How do I configure BiQuad DSP filter using q15 coefs, e.g. calling arm_biquad_cascade_df1_init_q15() method?I guess, I am missing some basic concepts here. Calculated coefs (e.g. with this calculator) can have values greater that 1 and I do not think I can just scale them down since arm_biquad_cascade_df1_init_q15() method seems to expect standardized values (a0=1). See this picture.How to correctly convert calculated coefs to q15 values?