Figure 4 - The Navigation and Visualisation of Environmental Audio using Zooming Spectrograms

Other figures that are a part of this publication include: Figure 1 - Top, Figure 1 - Mid, Figure - 4 (Focused stack), and Interactive zooming demo

A sequence of fourteen images from smallest scale (top) to largest scale (bottom) focused on minute 60 (7am). Three-color mappings are used to cover the 11.6 bit scale gap: ACI-ENT-EVN at the smallest scales, BGN-POW-EVN at the mid-scales and the BGN-POW at the large scales (see table).

 

Color mapping

Scale

Red

Green

Blue

Small

ACI

ENT

EVN

Mid

BGN

POW

EVN

Large

BGN

Cube-helix color-scale

POW

An interactive zooming implementation of this image is at http://www.ecosounds.org/Zoom/zoom.

A focused stack of false-color spectrogram with varying resolutions.

Axes: The x axis time scale varies from small-scale (top) to large scale (bottom). The scales shown are: 60, 24, 12, 6, 4, 2, 1, 0.6, 0.4, 0.2, 0.16, 0.08, 0.04, 0.02 seconds/pixel. The horizontal grid-lines are at 1 kHz intervals.

Last modified: 20 July 2015.