AudioLock Digital Audio Scrambling Upgrade For Viewlock II

Audiolock II upgrade for Viewlock II allows up to two audio channels to be encrypted together with the video. With no size increase over the standard video only unit, Audiolock II is highly compact and offers complete protection for video and audio surveillance links.

Audiolock II converts the incoming audio to an encrypted digital bit stream and adds this audio data to unused video lines. This technique is a robust and highly secure method of transmitting the audio over the link.

Audiolock II uses advanced digital audio compression, resulting in excellent signal to noise performance. Indeed, Audiolock II provides near broadcast quality audio, vastly superior to the traditional sub-carrier audio channels used by video microwave links.

With the Audiolock II upgrade, the video is connected in the normal way to the Viewlock II, however, audio is presented to the encoder rather than the transmitter. The Audiolock encoder then combines the audio within the scrambled video feed ready for secure transmission. At the receive site, the decoder extracts the audio to provide a clear output. Audiolock is configurable for one channel of 14 kHz bandwidth or two channels of 7 kHz bandwidth.

Connection to Audiolock.