DSP_iir_ss
[Filtering and convolution]

Collaboration diagram for DSP_iir_ss:

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Detailed Description

short	DSP_iir_ss (short Input, const short *restrict Coefs, int nCoefs, short *restrict State)

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Function Documentation

short DSP_iir_ss	(	short	Input,
		const short *restrict	Coefs,
		int	nCoefs,
		short *restrict	State
	)

This function implements an IIR filter, with a number of biquad stages given by nCoefs / 4. It accepts a single sample of input and returns a single sample of output. Coefficients are expected to be in the range [-2.0, 2.0) with Q14 precision.

Parameters:

	Input	= Single sample input
	Coefs	= Coefficients with Q14 precision
	nCoefs	= Number of coefficients
	State	= State

Algorithm:

DSP_iir_ss_cn.c is the natural C equivalent of the optimized intrinsic C code without restrictions. Note that the intrinsic C code is optimized and restrictions may apply.

Assumptions:

Coefs and State are double word aligned.
nCoefs is a multiple of 4 and >= 4.

Implementation Notes:

Interruptibility : The code is interruptible.
Endian support : supports both Little and Big endian modes.

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