Genre

Spectral centroid

Spectral Rolloff

Spectral flux

Time domain zero-crossing

MFCC

Larger window to summarize features

To model the time it takes a human to "understand" and extract texture information from a signal

Treat points within the "texture window" as if points in a Gaussian distribution

Then get mean and variance

"Another way to think of the texture window is as a memory of the past"

"In our system, an analysis window of 23 ms (512 samples at 22 050 Hz sampling rate) and a texture window of 1 s (43 analysis windows) is used."

"It is defined as the percentage of analysis windows that have less RMS energy than the average RMS energy across the texture window."

"For the BH calculation, the DWT is applied in a window of 65 536 samples at 22 050 Hz sampling rate which corresponds to approximately 3 s. This window is advanced by a hop size of 32 768 samples. This larger window is necessary to capture the signal repetitions at the beat and subbeat levels."

A0, A1: relative amplitude (divided by the sum of ampli- tudes) of the first, and second histogram peak;

• RA: ratio of the amplitude of the second peak divided by the amplitude of the first peak;

• P1, P2: period of the first, second peak in bpm;

• SUM: overall sum of the histogram (indication of beat strength)

multipitch detection algorithm from Tolonen and Karjalainen

"The three dominant peaks of the SACF are accumulated into a Pitch Histogram (PH) over the whole soundfile. For the computation of the PH, a pitch analysis window of 512 samples at 22 050 Hz sampling rate (approximately 23 ms) is used."

Frequency quantized and converted to MIDI note numbers

2 versions of the PH: folded and unfolded

FA0: Amplitude of maximum peak of the folded his- togram.

UP0: Period of the maximum peak of the unfolded his- togram.

FP0: Period of the maximum peak of the folded his- togram.

IPO1: Pitch interval between the two most prominent peaks of the folded histogram.

SUM The overall sum of the histogram. This is feature is a measure of the strength of the pitch detection.