R: Tone perception data

tonedata {mixtools} | R Documentation

## Tone perception data

### Description

The tone perception data stem from an experiment of Cohen (1980) and have been analyzed in de Veaux (1989) and Viele and Tong (2002). The dataset and this documentation file were copied from the fpc package by Christian Hennig. A pure fundamental tone was played to a trained musician. Electronically generated overtones were added, determined by a stretching ratio of `stretchratio`. `stretchratio=2.0` corresponds to the harmonic pattern usually heard in traditional definite pitched instruments. The musician was asked to tune an adjustable tone to the octave above the fundamental tone. `tuned` gives the ratio of the adjusted tone to the fundamental, i.e. `tuned=2.0` would be the correct tuning for all `stretchratio`-values. The data analyzed here belong to 150 trials with the same musician. In the original study, there were four further musicians.

### Usage

    data(tonedata)

### Format

A data frame with 2 variables, `stretchratio` and `tuned`, and 150 cases.

### Author(s)

Christian Hennig

### Source

Original source: Cohen, E. A. (1980), Inharmonic tone perception. Unpublished Ph.D. dissertation, Stanford University

R source: Hennig, Christian (2010), fpc: Flexible procedures for clustering, R package version 2.0-2. https://cran.r-project.org/package=fpc

### References

de Veaux, R. D. (1989), Mixtures of Linear Regressions, Computational Statistics and Data Analysis 8, 227-245.

Viele, K. and Tong, B. (2002), Modeling with Mixtures of Linear Regressions, Statistics and Computing 12, 315-330.

[Package mixtools version 1.2.0 Index]