Top "Signal-processing" questions

AKA digital signal processing (DSP).

How can I calculate audio dB level?

I want to calculate room noise level with the computer's microphone. I record noise as an audio file, but how …

audio signal-processing
What Are High-Pass and Low-Pass Filters?

Graphics and audio editing and processing software often contain functions called "High-Pass Filter" and "Low-Pass Filter". Exactly what do these …

algorithm graphics audio photoshop signal-processing
Intuitive understanding of 1D, 2D, and 3D convolutions in convolutional neural networks

Can anyone please clearly explain the difference between 1D, 2D, and 3D convolutions in convolutional neural networks (in deep learning) …

machine-learning deep-learning signal-processing conv-neural-network convolution
Data Compression Algorithms

I was wondering if anyone has a list of data compression algorithms. I know basically nothing about data compression and …

c++ c algorithm compression signal-processing
Calculate autocorrelation using FFT in Matlab

I've read some explanations of how autocorrelation can be more efficiently calculated using the fft of a signal, multiplying the …

matlab signal-processing fft correlation
Why does FFT produce complex numbers instead of real numbers?

All the FFT implementations we have come across result in complex values (with real and imaginary parts), even if the …

algorithm math audio signal-processing fft
Creating sine or square wave in C#

How do I generate an audio sine or square wave of a given frequency? I am hoping to do this …

c# audio signal-processing
Signal processing library in Java?

I'd like to compute power spectral density of time series; do some bandpass, lowpass, and highpass filtering; maybe some other …

java signal-processing numerical-analysis
What is the Hamming window for?

I'm working with some code that does a Fourier transform (to calculate the cepstrum of an audio sample). Before it …

signal-processing window-functions
Determine frequency from signal data in MATLAB

I have data from a sensor and I need to find the frequency of it. It looks like fft() seems …

matlab signal-processing frequency noise