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The bandwidth of various genres of music can be analyzed in the frequency domain.

Bandwidth refers to how spread-spectrum the signal is and what frequencies are present. If a signal is composed of many high frequencies, the bandwidth will be large. However, if the signal is composed of mostly low frequencies, the bandwidth will be small. After taking the shifted FFT of windows of the music vector, we find the last frequency component above a certain cutoff threshold, which is the bandwidth of the signal. Because classical music is composed of harmonic instruments, its bandwidth will be smaller and it will have fewer frequency components. However, hard music like punk or rap has lots of non-sinusoidal drumbeats, which will create more frequency components and their bandwidth will be larger.

Bandwidth for classical music.
Bandwidth for jazz music.

Results

The bandwidth of songs in the frequency domain is very good at distinguishing jazz. However, the bandwidth of punk, techno, and country, all hover around the same value. Rap has most of its power in low frequencies, and those coefficients will be large. Therefore, the bandwidth will be small because the spread of the frequency components is localized in the low frequencies. Jazz, however, has high and low frequencies, so there could be a frequency component in the high frequencies that is large, increasing the bandwidth.

We also give the neural network a measure of how bandwidth changes over the time period of a song. The standard deviations are good at telling jazz and country apart from the other genres, but no one genre stands out.

Overall, bandwidth is a good detector for jazz and rap, but poorer in distinguishing between classical, punk, techno, and country, which all have about the same bandwidth.
Variation of bandwidth across time.

Questions & Answers

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Maira Reply
nanopartical of organic/inorganic / physical chemistry , pdf / thesis / review
Ali
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Bhagvanji
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Giriraj
Preparation and Applications of Nanomaterial for Drug Delivery
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RAW Reply
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Professor
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Professor
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Rafiq
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Damian
How we are making nano material?
LITNING Reply
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LITNING Reply
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LITNING
scanning tunneling microscope
Sahil
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Santosh
Do u think that Graphene and Fullrene fiber can be used to make Air Plane body structure the lightest and strongest. Rafiq
Rafiq
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Mahi
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Rafiq
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Bob Reply
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Bob
The nanotechnology is as new science, to scale nanometric
brayan
nanotechnology is the study, desing, synthesis, manipulation and application of materials and functional systems through control of matter at nanoscale
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Kyle
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Adin
why?
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Kyle
biomolecules are e building blocks of every organics and inorganic materials.
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how did you get the value of 2000N.What calculations are needed to arrive at it
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Source:  OpenStax, Ece 301 projects fall 2003. OpenStax CNX. Jan 22, 2004 Download for free at http://cnx.org/content/col10223/1.5
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