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discrete time low pass filter

Xixika answered on June 23, 2023 Popularity 4/10 Helpfulness 2/10

answer discrete time low pass filter

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discrete time low pass filter

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/*
	First-Order Low-Pass Filter
    
	@param [float] 	prev_filtered 		Previous Filtered Measurement
	@param [float] 	curr_mes 			Current Non-Filtered Measurement
    @param [float] 	timestep_s			Timestep Between Measurements In Seconds
    @param [float] 	cuttof_freq			Desired Cuttof Frequency
*/

float filter_lowPass(float prev_filtered, float curr_mes, float timestep_s, float cuttof_freq)
{
	float alpha = 1 / (1 + 2 * PI * cuttof_freq * timestep_s);
	
	return alpha * prev_filtered + (1 - alpha) * curr_mes;
}

Popularity 4/10 Helpfulness 2/10 Language c

Source: Grepper

Tags: discrete filter time whatever

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Contributed on Jun 23 2023

Xixika

0 Answers Avg Quality 2/10

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discrete time high pass filter

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/*
	First-Order High-Pass Filter
    
	@param [float] 	prev_filtered 		Previous Filtered Measurement
	@param [float] 	curr_mes 			Current Non-Filtered Measurement
    @param [float]	prev_mes			Previous Non-filtered Measurement
    @param [float] 	timestep_s			Timestep Between Measurements In Seconds
    @param [float] 	cuttof_freq			Desired Cuttof Frequency
*/

float filter_highPass(float prev_filtered, float curr_mes, float prev_mes, float timestep_s, float cuttof_freq)
{
	float alpha = 1 - 1 / (1 + 2 * PI * cuttof_freq * timestep_s);
	
	return (1 - alpha) * prev_filtered + (1 - alpha) * (curr_mes - prev_mes);
}

Popularity 3/10 Helpfulness 1/10 Language c

Source: Grepper

Tags: discrete filter time c

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Contributed on Jun 23 2023

Xixika

0 Answers Avg Quality 2/10

discrete time low pass filter

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