What Is Pro Logic 2?

Dolby Pro Logic II transforms stereo into surround sound.

Pro Logic II is a surround sound processing technology created by Dolby. The movies and music you hear are ordinarily produced by a two stereo channel. Dolby Pro Logic II transforms this stereo sound into 5.1-channel surround sound.

Benefits

Using Dolby Pro Logic II you will be able to hear all the intended details in the original audio.

When using Dolby Pro Logic II, you are certain to hear all the details and subtleties of the original content. This new sound is "so rich and realistic that it completely changes your audio experience."

What it Does

This technology makes it feel like you are surrounded by speakers.

Pro Logic II technology converts the stereo sound of whatever movie, video game or CD that you are enjoying to make it feel as if there are speakers all around you. According to the Dolby website, "There are hidden audio cues that already exist in the stereo content to create realistic surround sound." This will result in five full-length audio channels surrounding you.

Specifications

Dolby Pro Logic II has been designed to produce higher-quality audio.

Pro Logic II takes "the input signals and employs a servo loop to match their levels. These matched audio signals are sent directly to the matrix stages to derive the various output channels ... [and] the same audio signals that feed the output matrix are themselves used to control the servo loop." Hence, the sound is improved.

References

• Dolby: Dolby Pro Logic II
• Dolby: Dolby Pro Logic II Details
• Dolby: Pro Logic II Specifcations