Updates and Errata

This page will contain ongoing updates and corrections to Audio Transducers. If you find a error in the text or want a point cleared up simply E-mail me and I'll add it to the list.

Updates are extensions to the text. They will not likely mean much as they will assume that you have the text to reference back to.

Updates

A pdf file with Appendix A (not in printed text). This appendix has an example of a waveguide calculation with higher order modes considered.

Errata

pg. 19 - Eq. (1.11.32) contains an extra left bracket.

Pg. 276 - the functions A2,3(w) are actually the denominators of the functions
referred to on that page. This is not stated as such.

Pg. 62 - the 4th line should read "Using this result in Eq. 3.6.60 leads to" and
- Eq. 3.6.63 and 3.6.64 - the argument of the Hankel function should
have a cosj instead of a sinj . (Eq. 3.6.67 is correct)

pg. 149 - Eq. 6.5.14 for T_n^m should be multiplied by 1/2, the k's in the H_0,1 and
H_1,0 should not be there, and the last term in the last line should
be h⁽¹⁾(kr_n+1) h⁽²⁾(kr_n)

pg. 32 - Fig. 2-5 has the wrong curve for a ceramic magnet - the wrong
        quadrant is shown. The correct curve slops down from the correctly
        shown Y-axis value and intersects a point at 1.7 Oersteds and 2.0
        kilo Gauss. It then falls off rapidly. This error has no effect on the
        discussion in this section.