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Results tagged with audio
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user 159
Audio, or in terms of signal processing, an audio signal is an analog or digital representation of sound, typically as an electrical voltage.
5
votes
Accepted
How to check the FFT results of a sine wave?
It seems you're calculating the spectrum by averaging 10 windows (non-overlapping?) to get the magnitude squared at 8192 or 8193 frequencies (from 0 to Nyquist, but some algorithms might drop the Nyqu …
- 356
19
votes
How do I implement cross-correlation to prove two audio files are similar?
In signal processing the cross-correlation (xcorr in MATLAB) is a convolution operation with one of the two sequences reversed. Since time reversal corresponds to complex conjugation in the frequency …
- 356