Editing Sound sensor (section)

=== Procedure: Recorder ===

 FILE 1,"sounds"
 WAIT UNTIL SOUND IS GREATER THAN 20
 REPEAT
 STORE 1,SOUND
 UNTIL SOUND IS LESS THAN 10
 CLOSE 1

This shows a typical graph produced using this procedure:

[[File:Chart-Sound-Recorder.svg|none]]

When sampling in this way about seven samples per second will be stored.
If logging is to be performed over a long period, for so example recording the level of sound during the night, very large files will be produced.
Samples could be taken less frequently, for example once every minute, but as each reading is taken in a fraction of a second any change in sound level between samples will be missed.

To avoid this problem you can take readings at more frequent intervals and average the result.
Procedure "LongTime" shows an example using the average command.
Readings are taken over a ten second period and the average value is then stored.
This routine is repeated 60 times to give an overall logging time of ten minutes.