Linked Questions

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1answer
2k views

Relationship between sampling frequency and number of coefficients [duplicate]

I have been designing a bandpass filter with a passband between $95\textrm{ kHz}$ and $105\textrm{ kHz}$ (using MATLAB's fdatool and ...
2
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1answer
647 views

Number of taps needed in an FIR filter to remove DC

An FIR filter is being used to remove the DC of an ECG. The sampling rate is 500Hz. How many taps would said FIR filter require (theoretically and practically) to filter out the DC. P.S. the filter ...
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1answer
3k views

Does Higher Sampling Rate Increase SNR?

I have AM demodulated voice samples that come from a 14bit ADC that I will filter, process, and then send to a CODEC. I can choose a sample rate of 96kSPS, 64kSPS, 48kSPS, or 32kSPS at the CODEC. ...
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1answer
2k views

Design narrow bandpass filter for signal with high sampling rate

I have to bandpass-filter a signal which has been sampled with 4000 Hz. Only frequencies around 15 Hz shall remain after filtering (let's say in a band between 10 Hz and 20 Hz; the narrower the ...
1
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0answers
4k views

Designing bandpass FIR filter MATLAB

I am trying to design a FIR bandpass filter for a STM32F407 microcontroller with a passband of 1kHz between 59500 Hz and 60500 Hz or something similar (since I don't really know how tight I can ...
2
votes
2answers
767 views

“fred harris rule of thumb”:

I would like to cite "fred harris rule of thumb" for estimating filter order. Is there a book or paper where I can find this rule of thumb? Thanks a bunch.
1
vote
1answer
597 views

Computational Complexity of Polyphase Resampling

does someone know the approximate computational complexity of a polyphase resampling algorithm? I am trying to find a good argument to prefer a polyphase resampling of Scipy over the FFT resampling ...
1
vote
2answers
496 views

what is the suitable design Method to the filter?

hi i'm going to design a low pass FIR filter for an EEG signal for the detection of eppileptic siezure and i want to know what is the suitable design Method to the filter? i need this FIR filter just ...
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1answer
461 views

What are the largest FIR filter lengths used in practice?

This is a rather general set of questions. I'm interested in knowing up to what orders, direct form FIR filters are considered useful for practical applications (both in hardware and software)? ...
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2answers
143 views

How do Anti-Aliasing Filters filter the signal?

I have programmed a anti-aliasing filter that uses the fourier-transformation and makes a perfect cutoff on my desired cutoff frequency for downsampling without aliasing. I have read about other ...
0
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1answer
172 views

FIRFilter with low cut-off compared to sampling frequency

Sorry if my question is some FIRFiltering basics, but I couldn't find a specific answer after some search. I am trying to design a decimating low pass filter in C (actually in OpenCL with GPU) with ...
1
vote
1answer
128 views

Bandwidth of a finite impulse response filter

In a machine learning application, a model learns to apply a filter h(n) via convolution to a 1-dimensional input signal s(n) (e....
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1answer
92 views

Bandpass filter with very high sampling rate

Consider a bandpass filter with Low Cut 17Hz, High Cut 22 Hz, Fs = 45000 Hz and Order = 6. When I pass a mixture of multiple sinusoidal waves through this filter (with a sine wave of frequency 20 Hz), ...
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1answer
52 views

EEG Sampling, Which Order should cover my result?

I have EEG data sampling rate is 250 Hz and I want to band pass this data in ( 0.5-3 Hz & 3-8 Hz & 8-13 Hz & 13-30 Hz & 30-40 Hz). Currently, the data is in the frequency range of ...
0
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0answers
49 views

How to design a bandpass FIR filter?

I want to design a bandpass filter (BPF) using a FIR filter by the window method. I have $f_{c1} = 3\, \mathrm{kHz}$, $f_{c2} = 6\, \mathrm{kHz}$ and slope is $-80\, \mathrm{dB/dec}$. How can I find ...

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