Timbre analysis requires a method that preserves when acoustic changes occur
Evidence
Therefore an analysis method is required in which the timing of acoustic changes during a note is preserved in the result. One analysis technique commonly used for the acoustic analysis of speech is a plot of amplitude, frequency and time known as a “spectrogram.” Frequency is plotted on the vertical scale; time on the horizontal axis and amplitude is plotted as the darkness on a gray scale, or in some cases the color, of the spectrogram. — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1433
Categorization
- DEFINE: Defines the spectrogram and its three encoding axes: frequency vertical, time horizontal, amplitude as darkness.
- XREF: connects to: Timbre is the cue by which listeners identify which instrument produced a note — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1425; A spectrogram preserves timing of acoustic changes in a note — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1433; Acoustic change detection may improve when listeners do not attend to the stimulus (+3 more)
Broader Connections
- A spectrogram preserves timing of acoustic changes in a note
#expands(1.00) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1433 - Acoustic change detection may improve when listeners do not attend to the stimulus
#qualifies(1.00) - Timbre comprises spectral content and how frequencies and amplitudes shift over a note
#expands(1.00) — David M. Howard, Jamie Angus, Acoustics and Psychoacoustics, 1427 - High-frequency auditory analysis preserves only the temporal envelope of signals
#contradicts(1.00) — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 1672