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What
is Sound Ruler ?
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português
What is
Sound Ruler?
Sound
Ruler is an analysis, graphing and teaching tool for bioacoustics.
It
is open code and free. Like scientific knowledge, it is available for all to
use, criticize, adapt for their needs and improve on.
Its
visual interactive approach to analysis brings you the best of two worlds: the
control of manual analysis and the objectivity and speed of automated analysis.
Sound
Ruler gives special attention to simple, repetitive sounds, that can be quickly
analyzed in great detail pulse by pulse for studies on populational variation.
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The main features of Sound
Ruler include:
Analysis
- Unrestricted sound file
size
No need to edit your field recordings down to each call. You can keep long
sequences in each file, in the way they were digitized. With Sound Ruler you
can examine, analyze, filter, graph and run CCAs on the fly from the original
long sequences, saving the positional information and filter parameters.
- Manual, automatic, or
interactive recognition and measurement of calls and pulses
From Mouse logging to automated call recognition and measurement of 35 variables
per pulse.
- Sound recognition based
on amplitude, duration, frequency and/or interval
- Adjustable low-pass,
high-pass or band-pass real-time filtering during the analysis
Remove unwanted sounds from a whole analysis with one click, without having
to edit any files.
- Tuning curve filtering
Look, listen to and analyze your animal sounds through the ears of the natural
receiver. This feature can also be used to easily design a variety complex
filter profiles.
- Cross correlation analysis
Get your sound measurements and CCA analysis done at once with no extra effort!
Have your bandpass filters and tuning curves applied to the calls on the fly,
before the CCA.
Perform simple or 2D CCAs, sliding spectrograms in the time and frequency
axes.
- Amplitude calibration
Calibrate your measurements using reference signals in volts or decibels.
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Graphing
- Oscilograms, spectrograms
and power spectra
- Editable and resizable
figures with a refresh function for batch graphing
Customize a figure for size and arrangement of plots. Then select another
call in Sound Ruler and click Refresh in your figure. The new data replace
the old inside your ready figure.
- Copy figures and paste
them into your text or image editor as bitmaps and metafiles.
- Export figures to seven
bitmap and metafile formats, compressed or not.
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Interactive measurement
- Measurements taken automatically
are displayed graphically
When the computer takes the measurements, the results are plotted on the graphs,
so you can inspect if the job was well done.
- You accept measurements,
skip the call or change settings and reanalyze
- Easy navigation over
previous results
The result navigator allows you to instantly move among the results for all
calls in an analysis session.
- Four options for saving
data: mouse log, textpad, spreadsheet or relational database
Depending on the analysis, it might be appropriate to just log your mouse
clicking, or tell Sound Ruler to take some measurements and paste them into
a text file, or save extensive amounts of data in spreadsheet or database
ready format.
- Save raw measurements,
calculated results and/or settings
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Teaching
- Explore acoustic scenarios
with Sound Math.
Let your students build hypothetical acoustic scenarios and explore how the
properties of sound relate to each other and interact with the environment
at the source, through the medium, at the receiver's ears and inside the computer.
- No-edit graphing, filtering,
tuning curve and CCA
Sound Ruler allows the students to do and undo several treatments and analyses
to the sound file, without having to edit and save it. They can quickly experiment
with and assimilate how physical processes influence call structure.
- Highly visual interface
Sound Ruler's highly graphical interface and result display provide students
with large amounts of sensory input that help them to make physical concepts
sound intuitive.
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