LRAD-100X
GENASYS INC.
Manual Part No.: 106457-00 Rev E
15
14.0 Recording MP3, WAV or WMA Files
The LRAD-Normalizer software CD included with this kit is provided to optimize audio files for
use with the LRAD.
Recordings for playback on the LRAD can be created on any computer with a microphone. The
file formats that can be played back on the LRAD’s MP3 player include:
•
MP3: MPEG Layer-3 compression, all bit rates, stereo or mono.
•
WAV: Uncompressed PCM (Pulse Code Modulation), all bit rates, stereo or mono.
•
WMA: Windows Media Audio compression, all bit rates, stereo or mono.
15.0 The Recording Microphone
The LRAD-100X system includes a rugged microphone with an integrated digital recording chip.
This microphone can record and store approximately one minute of audio and is also capable of
broadcasting live speech. To broadcast live speech, simply press and hold the PUSH TO TALK
(PTT) button (item 1 in Figure 10) and speak into the microphone.
In certain situations, the user may prefer to record a message instead of broadcasting live
speech. The recording feature is extremely useful when a message needs to be quickly recorded
for repeated continuous use, or when feedback cannot be avoided when broadcasting live
speech through the microphone.
15.1 Feedback
About microphone feedback
:
Microphone feedback is caused when the microphone picks up the LRAD’s audio output,
causing a loud harmonic hum through the device. Placing the microphone directly in the sound
projection path of the LRAD and keying the PUSH TO TALK button will result in the worst-case
feedback scenario. This is because the sound being produced by the LRAD is being fed back into
itself, causing a reverberation and resulting in a loud screech from the device. When operating
the LRAD, the user should always be vigilant about limiting feedback.
