ISLA Instruments S2400 User Manual
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SD Card Format
The S2400 uses an SD Card to store samples, kits, projects, and settings. It must be formatted as
FAT32, which is standard for most new SD cads. We have tested it with up to 512 GB cards. An
inserted SD card can be formatted by the S2400 with the format option in the Settings menu.
File and Folder Names
The S2400 can only read valid FAT32 file and folder names. A square character (ā”) in a file or
folder name indicates an untranslatable Unicode character. It also means that it is an invalid
FAT32 name, and the S2400 cannot open that file/folder. MacOS allows invalid folder names
(including trailing spaces and embedded slashes) that no other OS can read. Rename invalid
folders/files on your computer.
Samples
Samples (.WAV files) can be saved to and loaded from any folder on the SD card. When saving a
sample to a project, the project must exist. If no project was loaded or saved before sampling,
the new project must be named and saved before the sample is saved. If the project exists, the
sample is saved in the project directory, but the project itself is not saved at that time.
Sample Size
There is no limit on the length of a sample that can be played from the SD card. The only size
limits are on sampling time, and waveform editing.
Supported Sample Formats
File Format: WAV
Sample Rates: 26KHz, 44.1KHz, and 48KHz
Bit Depth: 16-bit, 24-bit, 32-bit, and 32-bit float
Files other than WAV are not loaded. Sample rates other than those listed play at 48KHz. Bit
depths other than those listed do not play.
Optimal Sample Format
The S2400 Audio Engine is 48KHz, 16-bit, so that is the optimal sample format for playback.
44.1KHz files are supported because they are so common, however, they have to be resampled
to 48KHz during playback, which can add some aliasing in low frequencies.
Samples with a bit depth higher than 16-bit are converted during playback. So, there is no
benefit to loading files of higher bit depth. They will also take up more memory and CPU
resources.
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