Representation: **diss¶

**diss – sensory dissonance representation

The **diss representation is used to characterize the degree of sensory dissonance for successive acoustic moments. Two types of tokens are recognized by **diss: dissonance-tokens and barlines. Dissonance-tokens encode integer values greater than or equal to zero. Larger values represent higher sensory dissonance. Dissonance values reflect the measurement method devised by Kameoka and Kuriyagawa (see **REFERENCES**). Barlines are represented using the “common system” for barlines – see **barlines**.

It is recommended that files containing predominantly **diss data should be given names with the distinguishing `.dis’ extension.

The following table summarizes the **diss mappings of signifiers and signifieds.

0-9	dissonance values specified as integers;
	measure numbers
=	barline
==	double barline
=;	barline with pause sign

Summary of ***diss** Signifiers*

A sample document is given below:

**diss
*C:
*M4/4
=1
65
84
152
160
=2
211
1017
841
1221
=3
*-

Note that rests are not represented in the **diss scheme.

The following Humdrum command produces **diss data as output:

**diss** calculate the degree of sensory dissonance for successive spectra

The following tandem interpretations can be used in conjunction with **diss:

meter signatures	*M6/8
key signatures	*k[f#c#]
key	*c#:

Tandem interpretations for ***diss***

`` barlines, diss, **spect, spect``

Kameoka, A. & Kuriyagawa, M. “Consonance theory, part I: Consonance of dyads.” Journal of the Acoustical Society of America, Vol. 45, No. 6 (1969a) pp.1451-1459. Kameoka, A. & Kuriyagawa, M. “Consonance theory, part II: Consonance of complex tones and its calculation method.” Journal of the Acoustical Society of America, Vol. 45, No. 6 (1969b) pp.1460-1469.