Top "Signal-processing" questions

AKA digital signal processing (DSP).

FFT Pitch Detection - Melody Extraction

I am creating a pitch detection program that extracts the fundamental frequency from the power spectrum obtained from the FFT …

signal-processing fft pitch sound-synthesis audio
What are the downsides of convolution by FFT compared to realspace convolution?

So I am aware that a convolution by FFT has a lower computational complexity than a convolution in real space. …

numpy scipy signal-processing fft convolution
From Amplitude or FFT to dB

I've a Python code which performs FFT on a wav file and plot the amplitude vs time / amplitude vs freq …

python signal-processing fft wav decibel
How would i down-sample a .wav file then reconstruct it using nyquist? - in MATLAB

This is all done in MATLAB 2010 My objective is to show the results of: undersampling, nyquist rate/ oversampling First i …

matlab audio signal-processing resampling
calculate turning points / pivot points in trajectory (path)

I'm trying to come up with an algorithm that will determine turning points in a trajectory of x/y coordinates. …

python algorithm matlab signal-processing
Real Time Audio Analysis In Linux

I'm wondering what is the recommended audio library to use? I'm attempting to make a small program that will aid …

linux audio real-time signal-processing alsa
Android audio : change pitch

The Android documentation for SoundPool says "the application can also alter the pitch by adjusting the playback rate in real-time …

android audio signal-processing soundpool
the Length of signal in calculating FFT

I want to ask some questions related to the last question of mine so I don't want to post in …

matlab signal-processing fft wavelet
How to get the frequency of a square wave in a python script

I'm using the TSL235 (http://www.ti.com/lit/ds/symlink/tsl235.pdf) light-to-frequency converter and the Raspberry Pi. The …

python raspberry-pi hardware signal-processing gpio
Resampling Audio in MATLAB

I have a wav file that has been imported into MATLAB and is sample at 44.1 kHz. I am trying to …

matlab audio signal-processing resampling