The waveform-similarity tag has no wiki summary.
2
votes
3answers
102 views
Calculating similarity between two signal plots
I have two plots, each having frequency as x-axis and Gain as y-axis. By taking one data set as a reference I have to calculate similarity between them.
The graphs have same values on the x-axis and ...
0
votes
4answers
253 views
How to generate a good Sinus audio signal of specific SampleRate, DataBits and Chunnels in a time frame
I encountered a problem when I tried to generate by a program an sinus audio signal.
My parameters are
Sample Rate: 44100 Hz
Data Bits: 16 bits
Channels: 2
I need to create a WAV file ...
2
votes
2answers
110 views
Audio descriptor of data
Is there a way to generate a waveform from data (any kind of data: integer, hexadecimal, string, char, binary), in a common audio player, without converting the data to an audio format?
I'm looking ...
3
votes
2answers
157 views
Why is there a mismatch between normalized cross-correlation and perception for basic waveforms?
To my ears, sawtooth and square waves are more similar to each other than either one is to a triangle wave. However, when I compare their magnitude spectra against each other using normalized ...
2
votes
1answer
218 views
Signal matching: How to quantify the difference between two signals of varying frequency
I have two waves, and I would like to quantify the difference between them.
They are exponential sine waves where the frequency decreases with time.
I'm interested in the difference in decay ...
0
votes
2answers
333 views
Audio signal comparison for automatic singing evaluation
I am trying to compare audio waveform from input waveform (A) to preset waveform (B)from in the device.
I try to lookup everywhere. Most likely someone give such a source code as follow :
...
8
votes
1answer
454 views
What is the difference between normalized peak of correlation, versus peak of correlation divided by its average?
Given a template, and a signal, the question arises as to how similar the signal is to the template.
Traditionally a simple correlation approach is used, whereby the template and a signal are ...
7
votes
2answers
236 views
Good metric for qualitatively comparing image patches
I am trying to "match" little square patches in an image. At first glance, it seems reasonable to simply do a Euclidean distance style comparison of two of these arrays to get a "similarity" measure. ...
20
votes
4answers
8k views
How do I implement cross-correlation to prove two audio files are similar?
I have to do cross correlation of two audio file to prove they are similar.
I have taken the FFT of the two audio files and have their power spectrum values in separate arrays.
How should I proceed ...
