Spectra Comparisons

Three Flutist Comparison (Straight-tone)

The following table is organized as follows:

These spectral charts show:

Flutist 1 Flutist 2 Flutist 3


Straight-tone Fluctuations

Even among well-trained professionals straight-tone notes can unintentionally change timbre. Some of the notes captured for this study have significant fluctuations in the harmonic content. Occasionally, a long-tone might go through different phases. The following table shows three different flutists playing B4.

Flutist 1 Flutist 2 Flutist 3

The samples selected for the survey avoided notes with large changes in the harmonic profile. These types of notes would have been difficult for listeners to assess the tone quality since it varies.

Trumpet and Oboe Comparison (Straight-tone)

Some flute tones were described as: brassy, trumpety, reedy, or oboe-like. Spectral charts for a professional trumpet player and a professional oboist are shown below. Both instruments are rich in upper harmonics (H3-H7). H3 (green) is prominent in many of these charts. In some notes, H5 (red) has a greater presence relative to flute spectra. Each row is a different pitch:


Trumpet Oboe