Audio fingerprint emulation (Philips)

refer to the A highly robust Audio fingerprinting System "

Philips Audio Fingerprint extraction process:

Step One:

resample to 5kHz,down-mix to Mono.

Step Two:

Frame processing, frame length and frame movement see literature.

Step Three:

(1) add hanning window,FFT transform, get the amplitude spectrum of each frame

(2) frequency pre- 300~2000hz, divided into a sub-band, similar to the bark domain

(3) obtain the energy of each sub-band and

Step Four:

Get a child fingerprint

Step Five:

A child fingerprint, as an audio fingerprint.

Simulation results:

The first figure is the first fingerprint of Song 1 .

The second figure is the first fingerprint of Song 1 compressed to 192kbps .

The third figure is the first fingerprint of Song 2 .

The fourth figure is the fingerprint difference between Figure 1 and Figure 2 .

The fifth figure is the fingerprint difference between Figure 1 and Figure 3 .

Audio fingerprint emulation (Philips)