Friday Math Movie - The Math in MP3 Audio Files

By Murray Bourne, 12 Sep 2008

This week's movie gives us an overview of analog and digital music recording.

We see how trigonometric graphs and sampling (using Fourier Series) are involved in music recordings.

The recording engineers in this movie are strongly anti-MP3, since a lot of the subtlety of the original is lost.

There are some people who strongly hold on to the belief that LP (long play 12" black vinyl discs) analog recordings are better than digital recordings.

Maybe, but remembering the inconvenience and the terrible sound of scratched and dusty LPs, I'm not going back to LP records any time soon...

[Sorry! This video no longer exists.]

You may also be interested in: Fast Fourier Transform which explains more about how digital recordings are made.

Be the first to comment below.

Leave a comment

Comment Preview

HTML: You can use simple tags like <b>, <a href="...">, etc.

To enter math, you can can either:

  1. Use simple calculator-like input in the following format (surround your math in backticks, or qq on tablet or phone):
    `a^2 = sqrt(b^2 + c^2)`
    (See more on ASCIIMath syntax); or
  2. Use simple LaTeX in the following format. Surround your math with \( and \).
    \( \int g dx = \sqrt{\frac{a}{b}} \)
    (This is standard simple LaTeX.)

NOTE: You can't mix both types of math entry in your comment.

Search IntMath, blog and Forum