Specifications

Set the Delay audio value in milliseconds if you find that audio playback precedes video

playback. Currently this must be a positive number between 0 and 2000. To perform the

opposite function, that is to delay the video by using a negative value here, is not yet

supported.

You may choose to Record audio with video clips. The Clip Viewer (See 10.) will playback the

audio when you open a clip and press the Play button.

You may choose to Trigger the camera when loud-enough noises are detected. The camera's

trigger (See 7.3) "break time" is used to end recording regardless of whether or not you have

the video motion sensor enabled. You may adjust the sensitivity of the audio trigger (the

loudness of the audio signal which will cause recording to begin). When the slider is toward

the left, only very loud sounds will trigger recording. When the slider is toward the right, small

sounds will also trigger recording. Maximum sensitivity is achieved when the microphone gain

is high (or at max) and the trigger sensitivity is high (or at max). Beneath the sensitivity slider is

an audio power meter, which will show the current strength of the audio signal. When the

signal is sufficient to trigger recording, the meter will show in red. This meter may only be

available once the audio source has been initialized (that is, you Ok the camera property

window, and then return to this properties page).

By default, a 1 second average intensity is used for the audio trigger. With this option

enabled, only longer/sustained noises will result in a trigger. With this option disabled, short

noises such as a single hand-clap may be capable of triggering the camera.

7.3 Motion/Trigger profiles

This page defines the interaction between several key Blue Iris components: Motion

Detection, Triggers, and Profiles.

There are several ways to trigger a camera, and motion detection is only one of them. You

may also use Audio (See 7.2), a Digital I/O

(See 11.) device or other external source such as a

mobile client app. In addition one camera can trigger other cameras if they are in a common

group.

Alerts (See 7.5) may be configured to fire when the camera is in a triggered state.