Input File Parameters
FILE TYPES, LENGTH, & SIZE
The application can process mono, uncompressed sound files, saved in the .wav or
.aif formats. Only the left channel of stereo files submitted is
processed. Sound files must be at least 316ms-long for 10Hz frequency resolution
(158ms-long for 20Hz frequency resolution). The maximum file length that can be
processed depends on the submitted sound file's sampling and bit rates. The maximum size of files that can be submitted to the server is
12Mb, corresponding to ~2mins of mono files at 48Ksamples/sec, 16bit.
The application will calculate roughness (or roughness profiles) based on the instantaneous spectrum at
the user-specified point(s) in time.
[For more on what is meant by instantaneous spectrum see the information
on the signal analysis method used.]
Note on percussive passages: Submitting solo percussive passages may give misleading roughness results. Since
roughness is calculated based on instantaneous spectra at the time(s) specified, roughness sensations based on fast
alterations among dense, inharmonic spectra may not be faithfully captured.
Files submitted for analysis are transferred to the application server via the
network. After the analysis has been completed, the submitted files are
automatically deleted. Multiple analyses of the same sound file require resubmission
of the file.