CaltechAUTHORS
  A Caltech Library Service

String Stretching, Frequency Modulation, and Banjo Clang

Politzer, David (2014) String Stretching, Frequency Modulation, and Banjo Clang. , Pasadena, CA. (Unpublished) http://resolver.caltech.edu/CaltechAUTHORS:20150313-132229631

[img] PDF - Submitted Version
See Usage Policy.

453Kb
[img] Audio (MPEG) (D5-G3) - Supplemental Material
See Usage Policy.

32Kb
[img] Audio (MPEG) (D5plus-minus-scs) - Supplemental Material
See Usage Policy.

32Kb
[img] Audio (MPEG) (D5plus-minus-sss) - Supplemental Material
See Usage Policy.

32Kb
[img] Audio (WAV) (D5tremolo) - Supplemental Material
See Usage Policy.

93Kb
[img] Audio (WAV) (FM-D5) - Supplemental Material
See Usage Policy.

93Kb
[img] Audio (WAV) (FM-D5pluck) - Supplemental Material
See Usage Policy.

15Kb
[img] Audio (MPEG) (clang) - Supplemental Material
See Usage Policy.

822Kb
[img] Audio (MPEG) (goodtime-stinsons2) - Supplemental Material
See Usage Policy.

557Kb
[img] Audio (MPEG) (head-rub) - Supplemental Material
See Usage Policy.

151Kb
[img] Audio (MPEG) (hexagon-nylon-2) - Supplemental Material
See Usage Policy.

612Kb
[img] Audio (MPEG) (hexagon-steel-1) - Supplemental Material
See Usage Policy.

628Kb
[img] Audio (MPEG) (no-knot-stinsons2) - Supplemental Material
See Usage Policy.

544Kb
[img] Audio (WAV) (pureD5) - Supplemental Material
See Usage Policy.

31Kb
[img] Audio (WAV) (pureD5pluck) - Supplemental Material
See Usage Policy.

93Kb
[img] Audio (MPEG) (sine-stiff-head-pluck) - Supplemental Material
See Usage Policy.

33Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20150313-132229631

Abstract

The banjo’s floating bridge, string break angle, and flexible drumhead all contribute to substantial audio range frequency modulation. From the world of electronic music synthesis, it is known that modulating higher frequency sounds with lower acoustic frequencies leads to metallic and bell-like tone. The mechanics of the banjo does just that quite naturally, modulating fundamentals and harmonics with the motion of the bridge. In technical terms, with a floating bridge, string stretching is first order in bridge motion, in contrast to it being second order in the vibration amplitude of the strings.


Item Type:Report or Paper (Discussion Paper)
Related URLs:
URLURL TypeDescription
http://www.its.caltech.edu/~politzer/FM.pdfAuthorArticle
ORCID:
AuthorORCID
Politzer, David0000-0002-4983-6621
Additional Information:I would like to thank Greg Deering and the Deering Banjo Company® for encouragement and support for the pursuit the physics of banjo sound, thank Frank Rice of Caltech for constructive observations, and thank my wife, Maria, who always has a sympathetic ear, asks good questions, and often suggests good answers.
Other Numbering System:
Other Numbering System NameOther Numbering System ID
HDP14-02
Record Number:CaltechAUTHORS:20150313-132229631
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20150313-132229631
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:55753
Collection:CaltechAUTHORS
Deposited By: H. Politzer
Deposited On:13 Mar 2015 22:16
Last Modified:27 Oct 2017 20:18

Repository Staff Only: item control page