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      可以帮我确认一下sigma dsp帮助文档中的这两个算法是否是正确的呢? 其余算法均正确,只有这两个算法计算出来的值与sigma dsp

软件计算出来的值不同,而有导入芯片后,输出波形也会出现问题.  谢谢

        Bessel HP算法:

Coefficients

alpha = sin(ω0) / ( 2.0 * 1/sqrt(3))

a0 =   1 + alpha

a1 =  -2*cos(ω0)

a2 =   1 - alpha

b0 = -(1 + cos(ω0)) * gainLinear / 2

b1 = -(1 + cos(ω0)) * gainLinear

b2 = -(1 + cos(ω0)) * gainLinear / 2

Butterworth HP算法:

Coefficients

alpha = sin(ω0) / ( 2.0 * 1/sqrt(2) )

a0 =   1 + alpha

a1 =  -2*cos(ω0)

a2 =   1 - alpha

b0 = -(1 + cos(ω0)) * gainLinear / 2

b1 = -(1 + cos(ω0)) * gainLinear

b2 = -(1 + cos(ω0)) * gainLinear / 2