Height channels are

audio channel An audio signal is a representation of sound, typically using either a changing level of electrical voltage Voltage, also known as electric pressure, electric tension, or (electric) potential difference, is the difference in electric poten ...

s in

surround sound Surround sound is a technique for enriching the fidelity and depth of sound reproduction by using multiple audio channels from speakers that surround the listener ( surround channels). Its first application was in movie theaters. Prior to sur ...

multichannel audio. Height channels are located above the listening area and increase the sound field beyond the horizontal plane. Two systems that use height channels, Dolby Pro Logic IIz and DTS Neo:X, which matrixes a front left and front right height out of the front left and front right channels. According to Dolby, non-directional ambient effects such as rain and wind are mapped to the height channels. This is similar to what is mapped to rear surround channels. In 2002, Dolby premiered a master of ''

We Were Soldiers ''We Were Soldiers'' is a 2002 war film written and directed by Randall Wallace and starring Mel Gibson. Based on the book '' We Were Soldiers Once… and Young'' (1992) by Lieutenant General (Ret.) Hal Moore and reporter Joseph L. Galloway, i ...

'' which featured a Sonic Whole Overhead Sound soundtrack.

DTS-HD DTS-HD Master Audio (DTS-HD MA; known as DTS++ before 2004) is a multi-channel, lossless audio codec developed by DTS as an extension of the lossy DTS Coherent Acoustics codec (DTS CA; usually itself referred to as just DTS). Rather than being ...

is a format which supports virtually any amount (over 2000) discrete channels for which a demonstration of an 11.2 system using four height channels was given at a

Consumer Electronics Show CES (; formerly an initialism for Consumer Electronics Show) is an annual trade show organized by the Consumer Technology Association (CTA). Held in January at the Las Vegas Convention Center in Winchester, Nevada, United States, the event typi ...

. Tomlinson Holman's 10.2 surround sound, a format currently under development, uses 12 or 14 fully discrete channels, both including two height channels; front left and front right. The

Dolby Atmos Dolby Atmos is a surround sound technology developed by Dolby Laboratories. It expands on existing surround sound systems by adding height channels, allowing sounds to be interpreted as three-dimensional objects with neither horizontal, nor verti ...

surround system, which allows for unlimited number of tracks, uses height channels, too.

References

{{reflist Surround sound Film sound production

See also

References