ecoObs Mini-batcorder 1.0 Beknopte handleiding - Pagina 14

Blader online of download pdf Beknopte handleiding voor {categorie_naam} ecoObs Mini-batcorder 1.0. ecoObs Mini-batcorder 1.0 17 pagina's.

ETTINGS

Settings

Using the freely supplied software tools (see ecoObs downloads page) you

can setup your Mini-batcorder according to your needs.

Filecode

The Filecode consists of ten alphanumeric characters (including underscore)

and is used as identiﬁcation of a recording.

Quality

The standard value for Quality is 20, which is optimal for most bats in com-

mon recording situations. At higher values (>20), less call like signals will be

recognized, while lowering the Quality value (<20) tightens up the trigger al-

gorithm.

Threshold

The Threshold inﬂuences the recording range of the batcorder. The standard

value of -27 dB is approximate to an amplitude of 4.5% of the maximal ampli-

tude. This resembles a recording distance (radius) of at least 10 meters for

most European bat species. If you want to increase the recording range,

Threshold has to be lowered to a value of -30 dB or -36 dB. A change of the

threshold value does not change the batcorders gain! Only signals with am-

plitudes above the threshold will be analyzed. Possible values are -18, -24, -

27, -30, -36 dB and -42 dB ( 12.5% to 0.8% of maximal amplitude). If you use

a value different from -27 dB you have to adjust the appropriate setting in

bcAdmin. In newer versions of bcAdmin the threshold is set in the same

steps as in the batcorder menu.

Posttrigger

The post trigger is deﬁned by the interval between two successive detected

calls that are still written into the same sound ﬁle. After this interval, a new

recording is started if a call is recognized. We recommend a value of 400 ms

or 600 ms. Possible values are 0 ms, 200 ms, 400 ms, 600 ms and 800 ms.