The Dolby Digital "Double-D" logo is one of the most recognizable symbols in the world of sound technology and cinema. It represents Dolby Laboratories, a company founded in 1965 by Ray Dolby that revolutionized audio quality, particularly in film and home theatre systems.

Dolby Laboratories initially focused on reducing background noise in audio recordings, introducing the Dolby Noise Reduction system in the late 1960s. This technology became widely adopted in recording studios, cassette tapes, and professional audio environments but substantially unknown to the average people.

By the mid-1970s, Dolby shifted its attention toward improving sound quality in film. Dolby Stereo was launched in 1976, which added multi-channel sound to films, enhancing the audio experience in theatres. This marked Dolby's significant entry into cinema sound.

In 1982, the company introduced Dolby Surround sound for home use, followed by Dolby Pro Logic in the late 1980s, which brought cinema-like sound to home theatre systems.

The company continued innovating, and in 1992, Dolby Digital was introduced, a major milestone. Dolby Digital is a digital audio compression format that allows for discrete multi-channel audio, which became the standard for high-quality surround sound in theatres and home entertainment.

The "Double-D" logo was designed to symbolize Dolby's presence in both analog and digital sound. The two "D"s facing each other represent the concept of dual channels or stereo audio, and later, surround sound technologies. The logo started to gain widespread recognition in the 1990s with the rise of Dolby Digital in movie theatres and home video formats, such as DVD. As Dolby technology became synonymous with high-quality audio, the "Double-D" logo became a key part of the company's branding.

While the logo has remained relatively consistent in design, with its two interlocking "D"s, its context and usage have evolved. Initially associated with Dolby Stereo and Dolby Surround, the logo became closely tied to Dolby Digital as the standard for cinema sound. Over the years, Dolby has expanded into other technologies like Dolby Atmos for 3D surround sound, but the Double-D logo continues to serve as a representation of the company's commitment to high-quality audio experiences across different platforms.

The Dolby Double-D logo is not just a mark of technology but has become a cultural icon, particularly in film and television. It is often seen before the start of major films, TV shows, or high-end audio systems, and it’s associated with an expectation of immersive sound quality.

The Double-D logo reflects the company’s legacy in bringing innovation to the world of audio, especially in terms of creating a multi-dimensional listening experience for both professional and consumer audiences.

The logo has been split in parts so you can colourize each of them as you want:

• the Double-D logo;
• the “Dolby Digital” text;
• the frame border;
• the background.

Please note that the background is divided in an internal part and a external part that stays immediately below the frame border, in this way you can manage multicolour printing.