Max File Length
The Data Recorder streams data to audio files. A single audio file will be limited to the length
specified, here, in hours, minutes, and seconds. Tap on the time to reveal a picker control with
which the maximum duration may be specified, up to 2 hours, 59 minutes, and 59 seconds. Tap on
the time again to hide the picker control.
When this option is enabled, the latitude, longitude, and altitude at the time of the
measurement will be embedded within the audio file and included in optional info files (see
below). Horizontal and vertical accuracy (in meters) will also be included.
Audio File Format
Data can be saved in AIF, CAF, or WAV audio files.
To make sense of multiple files written in a single recording session, each file
can be assigned an auto-incremented numeric suffix (Counter) or a compact suffix indicating
the date and time the file was saved. The suffix will be appended to the end of the filename as
indicated in the Data Recorder's main display.
Save Info File
The Data Recorder embeds metadata within the audio file (chunkID: 'FHdr') including date, time,
location (if enabled), input channel details, and sensitivity calibration information. This
metadata can also be optionally saved to a separate info file for easy retrieval. The info file
will have the same name as the audio file.
Info File Format
The info file can be saved in CSV, TXT (tab-delimited), or MAT-file format.
To allow the recording to continue after the maximum file length has been reached for the
current recording session, switch this option on. When one file is finished, another will be
recorded to, up to the File Limit described below. This option will only have an effect if the
File Limit is greater than 1.
If the Keep Recording option is enabled and File Limit is greater than 1, the Data Recorder will
stream to a new audio file each time the current max file length is reached, until the file
limit is met. So, for example, if the maximum file length is 1 hour, Keep Recording is enabled,
and File Limit is 8, the Data Recorder, if allowed to run long enough, will capture 8 hours of
data which will be split into 8 audio files.
*In SoundMeter X, most tools are available only via subscription (subscriptions can be purchased within SoundMeter X).
*SoundMeter Basic only includes tools and features found in the Standard subscription.