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Optimal detector for the frequency hopping modulation

Started by kman 7 months ago7 replieslatest reply 7 months ago106 views
I have a device, which transmits a signal of constant amplitude, and a frequency, chaotically hopping over predefined set of frequencies. For example: F0+500 F0+800 ......

Efficient digital interpolation filter

Started by LC_Poon 7 months ago5 replieslatest reply 7 months ago163 views
I came across this paper entitled "Design of Efficient Digital Interpolation Filters and Sigma-Delta Modulator for Audio DAC" where the author oversamples an input...

reconstruct phase-shifted sine tone

Started by iosman123 7 months ago8 replieslatest reply 7 months ago103 views
Hello,I am trying an example matlab code for reconstructing a sine-tone using window OLA, using a Hanning window (periodic). Sampling frequency is 8kHz and the...

Adaptive Filter Theory: prequisites to learning

Started by alnesbit 8 months ago7 replieslatest reply 7 months ago184 views
Hello!I purchaesd Haykin (2014), "Adaptive Filter Theory," 5th ed., largely to learn about echo cancellation and other useful topics for music and audio signal processing...

Understanding the Nyquist frequency when doing complex FFT

Started by ronnu 7 months ago13 replieslatest reply 7 months ago146 views
Hi, I'm working on shift algorithm in MATLAB. My selected sampling frequency is 64Hz. I created a complex time domain signal with a frequency of 30Hz. As far as...

A low sensitivity and limit-cycle-free IIR filter implementation

Started by hjko 7 months ago6 replieslatest reply 7 months ago105 views
An IIR filter implementation suffers from instability and zero-input limit cycles when the poles are located near the unit circle. Recently, I developed an optimal...

Posting Equations - Please help me identify problems with our MathJax implementation

Started by stephaneb 7 months ago9 replieslatest reply 7 months ago66 views
Hi, in this thread, @rbj mentioned that the MathJax implementation in this forum is erratic and I believe him. I had issued in the past and it is always frustrating. ...

multi windowing and combining fft

Started by Samp17 7 months ago4 replieslatest reply 7 months ago109 views
I have made an impulse response of an acoustical system.  I have windowed this impulse response to filter any reflections.  The window length used on this impulse...

FFT Interpolation

Started by MrColly 7 months ago23 replieslatest reply 7 months ago230 views
I am having difficulties accepting the validity of FFT interpolation / time domain zero padding. When a section of time data of length T is selected from which...

FFT bins size and averaging

Started by pointblanke 7 months ago3 replieslatest reply 7 months ago97 views
Hi,I have a signal coming from an ADC that I oversample with an fs=80kHz and then I subsequently average 8 samples to get a rate of 10ks/s. I feed this averaged...

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