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| #ifndef _IIRFILETER_HH_8524585704327027602
| #define _IIRFILETER_HH_8524585704327027602
|
| /// <summary>
| /// IIRÂ˲¨Æ÷ÀàÐÍ
| /// </summary>
| enum IIRFilterType
| {
| bessel,
| butterworth,
| linkwitz_riley,
| eq,
| };
|
| enum IIRBANDType
| {
| lowpass,
| highpass,
| bpf_pq, //(constant skirt gain, peak gain = Q)
| bpf_zero, //(constant 0 dB peak gain)
| notch,
| apf,
| peaking_eq,
| lowshelf,
| highshelf,
| };
|
| class IIRFilter
| {
| private:
| void call_peaking_eq_with_lowfreq(double fc, double gain, double q, int fs, double* coef_b, double* coef_a);
| void call_peaking_eq(double fc, double gain, double q, int fs, double* coef_b, double* coef_a);
| public:
| int eq(IIRBANDType type, int f0, double g, double q, int fs, double(*sos)[6]);
| int butters(IIRBANDType type, int n, int fc, int fs, double g, double (*sos)[6]);
| int linkwitzs(IIRBANDType type, int n, int fc, int fs, double g, double(*sos)[6]);
| int bessels(IIRBANDType type, int n, int fc, int fs, double g, double(*sos)[6]);
| };
|
| #endif
|
|
