Ultra Stereo
Ultra Stereo, stylized as ULTRA★STEREO, is a cinema sound system that was developed in 1984 by chief engineer Jack Cashin.
| Product type | Sound format Surround sound |
|---|---|
| Owner | Ultra Stereo Labs |
| Country | United States |
| Introduced | 1984 |
| Markets | Worldwide |
It was a 4/2/4 photographic sound encoding and decoding procedure compatible with (and using the same technical basic structure, with identical sound quality as) its competitor Dolby Stereo Matrix.