o_195h4n6al16jb186b1b2qs7fgssa.pdf

} IIRTransposedStruct;
extern fractional* IIRTransposed (
int numSamps,
fractional* dstSamps,
fractional* srcSamps,
IIRTransposedStruct* filter
);
Arguments: Filter structure:
numSectionsLess1 1 less than number of cascaded second
order (biquadratic) sections (also S-1)
coeffsBase pointer to filter coefficients (also {a, b}),
either in X-Data or program memory
coeffsPage coefficient buffer page number, or 0xFF00
(defined value COEFFS_IN_DATA)if
coefficients in data space
delayBase1 pointer to filter state 1, with one word of
delay per second order section (also d1),
onlyin Y-Data
delayBase2 pointer to filter state 2, with one word of
delay per second order section (also d2),
onlyin Y-Data
finalShift output scaling (shift left)
Filter Description:
numSamps number of input samples to filter (also N)
dstSamps pointer to destination samples (also y)
srcSamps pointer to source samples (also x)
filter pointer to IIRTransposedStructfilter structure
Mô tả: IIRTransposedInitinitializes bằng không các giá trị chậm trễ trong một
Cấu trúc IIRTransposedStructfilter.
Bao gồm: dsp.h
Prototype: ngoài void IIRTransposedInit (
IIRTransposedStruct * bộ lọc
);
Lập luận: Cấu trúc bộ lọc:
(Xem mô tả các IIRTransposedfunction).
Khởi tạo Mô tả:
lọc con trỏ đến cấu trúc IIRTransposedStructfilter.
Bình luận: Sự chậm trễ được tạo thành từ hai bộ đệm độc lập, mỗi bộ đệm
có chứa một từ của nhà nước lọc mỗi section {d2 [s], d1 [s]}, 0 ≤s