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General file considerations
The Realiser cannot delete files from SD cards; that must be done with a computer.
The files the Realiser writes onto SD cards can easily be archived on a computer. The Realiser assigns
file names as follows:
PRIR20XX.SVS
HPEQ20XX.SVS
PRES20XX.SVS
where XX can be any number from 00 to 99.
Files are loaded from the Realiser into the root directory of the card, and likewise when loading files
from an SD card to the Realiser, the files must be in the root directory. There is no problem if files of
other types are also present in the root directory.
The Realiser will find the highest-numbered existing file in the category in question (PRIR, HPEQ,
PRES) and will assign the next-higher number to the new file when it is loaded.
For example, if the SD card root directory contained the files PRIR2037.SVS and HPEQ2009.SVS,
then the next PRIR file saved to the card would be named PRIR2038.SVS and the next HPEQ file
would be named HPEQ2010.SVS. It would not matter if there were or were not other PRIR or HPEQ
files in the root directory with numbers lower than 37 and 9. Thus if, for example, there were only one
file in the SD card’s root directory, PRIR2099.SVS, then no other PRIR files can be added. However,
files can be renamed freely, provided that the file name convention PRIR20XX.SVS and
HPE20XX.SVS is observed. Each SD card root directory can hold up to one hundred PRIR files and
up to one hundred HPEQ files. You can of course archive more files in subdirectories, but only those
in the root directory will be loadable.
Each PRIR file is about 3.1 MB in size, each HPEQ file is 32 kB, and each PRES file is about 7.6 MB.
Although the file names do not give information as to the specific contents, the text data entered (PRIR
listener, environment, time stamp; HPEQ listener, headphone model, time stamp) are stored as text in
the file header. The header can be examined using a computer; a hex editor is an appropriate tool. If
you associate the file extension .SVS with the hex editor, inspection is quickly done. You can edit the
text fields, but
only
with a hex editor,
not
a text editor or word processor. Do this
only if you are
familiar with hex editing and only if you back up the file first
.
Earlier file format
Files created with firmware prior to the 21 July 2011 version are saved to the SD card with names
PRIR00XX.SVS and HPEQ00XX.SVS and saving presets to cards was not possible. The current
firmware creates PRIR20XX.SVS, HPEQ20XX.SVS and PRES20XX.SVS files.
The 00XX files are loadable and readable with all firmware. However, the 20XX files are not usable
with earlier firmware.
Note that if you load an 00XX file into a Realiser with current firmware and then write it to an SD
card, it will be written in the 20XX format. Therefore if you are in a situation where you need file
compatibility with Realisers running earlier firmware, you should archive the 00XX files for that
purpose. A better solution, of course, would be to make sure that all Realisers are running the latest
firmware, in which case all files are usable.
