Top "Signal-processing" questions

AKA digital signal processing (DSP).

Lowpass Butterworth Filtering on MATLAB

I have been writing a very simple code to remove noise from a signal. The signal is just a sinusoidal …

matlab signals signal-processing lowpass-filter
Power spectrum of an image

I have begun (a small project) to calculate the power spectrum of an image in the frequency domain. So, what …

matlab signal-processing dft
Note onset detection

I am developing a system as an aid to musicians performing transcription. The aim is to perform automatic music transcription (…

audio signal-processing onset-detection
Resampling of two data sets of different length in MATLAB

I have two vectors: sensorA of length 927 and sensorB of length 1250. I would like to make them of the same …

matlab signal-processing sampling resampling
Android active noise cancellation

I'm working a somewhat ambitious project to get active noise-reduction achieved on Android with earbuds or headphones on. My objective …

android audio signal-processing audiorecord noise-reduction
Calculating frequencies from .mp3 or .wav files?

I'm trying to do some note recognition on mp3 or wav files. The problem is: How do I use the …

java audio signal-processing fft pitch-tracking
resizing 3D matrix (image) in MATLAB

I have a 3D matrix (MxNxK) and want to resize it to (M'xN'xK') (like imresize in matlab). I am using …

matlab image-processing signal-processing 3d-modelling multidimensional-array
How to make a simple EQ AudioUnit (bass, mid, treble) with iOS?

does anyone know how to make a simple EQ audio unit (3 bands - low, mid, hi) with iOS ? I know …

iphone ios core-audio signal-processing audiounit
Does "16bit integer PCM data" mean it's signed or unsigned?

I'm using FMOD to develop an application which would immediately start playing the recording of the next/previous sentence exactly …

audio signal-processing pcm fmod
unit of fft(DFT) x axis

Possible Duplicate: How to get Frequency from FFT result I am somehow confused with the x axis of fft(DFT) …

matlab signal-processing fft dft