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Title: The Bird's Ear View of Space Physics: Audification as a Tool for the Spectral Analysis of Time Series Data Open Access Deposited

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Methodology
  • Not available
Description
  • Audification Routines in MATLAB and IDL
Creator
Depositor
  • thomasz@umich.edu
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Related items in Deep Blue Documents
  • Alexander, R.L., O’Modhrain, S., Roberts, D.A., Gilbert, J.A., & Zurbuchen, T.H. (2014). The Bird's Ear View of Space Physics: Audification as a Tool for the Spectral Analysis of Time Series Data (Audio), University of Michigan - Deep Blue. https://deepblue.lib.umich.edu/handle/2027.42/106425
Resource type
Last modified
  • 05/20/2021
Published
  • 12/06/2018
DOI
  • https://doi.org/10.7302/3gvs-g356
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To Cite this Work:
Zurbuchen, T. H. (2018). The Bird's Ear View of Space Physics: Audification as a Tool for the Spectral Analysis of Time Series Data [Data set], University of Michigan - Deep Blue Data. https://doi.org/10.7302/3gvs-g356

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Audification Routines in MATLAB and IDL

The following IDL Code will write one-dimensional Input_Data to an audio file with the name Audified_Data.wav:

dataparam = Input_Data; Change to your vector name
ScaledData = -32768+65535.*(dataparam-min(dataparam))/max(dataparam-min(dataparam)); scales the data appropriately
write_wav,'Audified_Data.wav',ScaledData,44100; Writes Audio

Matlab 2013 and future releases: The following code will write one-dimensional Name_Of_Vector to an audio file with the name Audified_Data.wav:

Input_Data = Name_Of_Vector; %Change to vector name
minC = min(Input_Data(:,1)); %Finds min data value
maxC = max(Input_Data(:,1)); %Finds max data value
ScaledData = 2*(Input_Data(:,1) - minC)./(maxC-minC) - 1; %Scales data between -1 and 1
fs = 44100; %Sets sample frequency
bits = 16; %Sets bit depth
audiowrite(ScaledData(:,1),fs,bits,'Audified_Data.wav'); %Writes Audio

Matlab 2012 and earlier:
The wavwrite function should be used in place of audiowrite.

Here is a page with helpful information on the WAVE file format:
https://ccrma.stanford.edu/courses/422/projects/WaveFormat/

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