Hard Disk Recording with AMon


Measurement series

With AMon you can schedule audio measurement series and create standardized sets of hard disc recordings. In order to create proper audio measurement series, follow these steps:


Step 1.

Start AMon. The main form shows up. Select 'Recording' in the dropdown-list on the toolbar.

Step 2.

Open the 'Settings' window and specify:

  • The audio output directory ('Audio Files').
  • A backup directory (optional).
  • Automatic file naming options (Numbers, Date Time, or Both).
  • An additional string that is added to each name of the recorded wave-files (optional).
  • A time schedule.
  • The audio input device.
  • The recording format.
  • The chunk length (= duration of each audio file created during recording).

Note that:

  • All recorded files are automatically saved in the default output directory.
  • The recording device has to be selected before recording. Make sure that it is the same as the Windows default audio input device!
  • Test the audio input device before recording!
  • You can specify any format supported by the soundcard.
  • High chunk lengths may cause problems. Each chunk has to fit into the computers free RAM.
Step 3.

Start the specified measurement series by clicking the red 'Start Recording' button. Controls in the toolbar are:


Control Function
Save current event log.
Clear current event log and current bitmap.
Start recording.
Pause recording.
Start analyzing recorded files (active only in monitoring mode).
Pause analysis of recorded files (active only in monitoring mode).
Create measurement report.
Reset current measurement.

Note that:

  • AMon will wait until the specified start time.
  • AMon 1.0 will not show any diagrams in recording mode!
  • AMon will provide feedback about its states and errors in the event log.
  • The 'Start Recording' button will blink during recording and while AMon is in wait-state.
A simple example

Let's say, you are a researcher and you want to record sounds of a given mouse in your lab. The mouse is called Susy and you use a P51M microphone from Sejona. You want to know what she is talking about during the night when you are at home. So, follow these steps:

  1. Create and select an audio output directory. Name it “Susy”. Make sure that enough space is on your hard disk.
  2. Create and select a backup directory on a second HDD. Name it “Susy Backups”. Make sure that enough space is on this drive.
  3. Select the sound card.
  4. Select a proper recording format, e.g. 200 kHz (to record ultrasound, if possible), 16 Bit, Mono
  5. Set the chunk length to 600 seconds (10 minutes).
  6. Set the recording schedule to “20:00:00 - 08:00:00”.
  7. Select “Both” in the automatic file naming panel.
  8. Name the user defined string (Add String) “p51m” (the microphone type)
  9. Click the 'Start Recording' button. AMon will wait until 8:00 P.M., then start the measurement series and record until 8:00 A.M..

On the next morning, you will find in the output directory “Susy” exactly 72 recordings. They are named this way:

\MyRecordings\Susy\p51m 0001 2012-07-02 20-00-00.wav

\MyRecordings\Susy\p51m 0002 2012-07-02 20-10-00.wav

\MyRecordings\Susy\p51m 0003 2012-07-02 20-20-00.wav

...

\MyRecordings\Susy\p51m 0072 2012-07-03 07-50-00.wav

In the backup directory “Susy Backups” the same 72 recordings will be saved:

\MyRecordings\Susy Backups\p51m 0001 2012-07-02 20-00-00.wav

\MyRecordings\Susy Backups\p51m 0002 2012-07-02 20-10-00.wav

\MyRecordings\Susy Backups\p51m 0003 2012-07-02 20-20-00.wav

...

\MyRecordings\Susy Backups\p51m 0072 2012-07-03 07-50-00.wav

Note that:

  • AMon is able to record for months or even years, if enough space is on your disk.
  • In recording mode AMon will just record - nothing else