Note Mix
Overview
This view shows the most likely chord and key context of the sound source in the form of relative note levels. The data is displayed as a constellation of pitch and weight LEDs arranged in a semitone circle. This view makes it easy to spot major and minor scale patterns.
Pitch LEDs
Each pitch LED represents a pitch class in the audio spectrum as follows:
- A label identifies the pitch class.
- Colour represents the pitch class.
Weight LEDs
Each weight LED represents the relative weight of a pitch class as follows:
- Radial position represents the pitch class.
- Length represents the relative weight.
- Colour represents the pitch class.
Switching Between Chord and Key Views
- To view the chord constellation, tap on Chord.
- To view the key constellation, tap on Key.
Example: Complex Tone in Spectral Mode
The sound source is a complex tone with 10 harmonics and a fundamental frequency of 220Hz (A3). The harmonics fall into five pitch classes. Only four are displayed in this case because the fifth one is too weak.
The weight constellation suggests that the A pitch class is the most prominent, while B is the least significant (of the four shown). The major triad pattern of A, C# and E is clearly visible. Due to the pitch ambiguity introduced by harmonics, the Spectral mode is not well suited for analyzing a polyphonic sound source. To reproduce this example, set the Audio Source to Complex Tone, and set the Analysis Mode to Spectral. |
Example: Complex Tone in Perceptual Mode
The sound source is a complex tone with 10 harmonics and a fundamental frequency of 220Hz (A3). The harmonics resolve to a single pitch class (ideal case).
The weight constellation shows only a contribution from the A pitch class, as expected. To reproduce this example, set the Audio Source to Complex Tone, and set the Analysis Mode to Perceptual. |