This initial system release is made in order to encourage discussion and development of the system.
Although a basic framework design has been created this is only a starting point and architecture may change if requirements change.
Any input, ideas, code, suggestions, information resources, etc.. you may have please email: firstname.lastname@example.org
command line options:
-p process -c # channels -d # Sample bits -i infile ` -o outfile -l # length in seconds -r # Sample rate -s <c|l|m> source c = cd; l = line; m = mic
How to Calibrate the SPL Meter.
There are two types of calibration that can be used a simple high and low level calibration and a full response table.
- Connect calibrator. Connect an SPL calibrator to the microphone mount, or, if none is available, use a high quality SPL meter and the pink noise generator. Either way, generate a known SPL field.
- use command line: "wavc -l n" where n is the the SPL that is being generated
- use command line: "wavc -h n" where n is the the SPL that is being generated
The above steps will create a very basic two level calibration but due to the response of some microphone transducers you may want to create a full range correction. This can be achieved by use of the command : "wavf -l n" where n is the calibration SPL, this can be repeated for any number of levels to create a full calibration table. The calibration table is saved in a file calib.txt.