Dolby 585 Time Scaling Processor Print-friendly version
Overview		Front and Rear Panels		Specifications

The Dolby 585 is an advanced, real-time audio solution for the time scaling and pitch shifting of multichannel audio.

Broadcasters, studios, and postproduction facilities often have to change the frame rate of programs or time scale their content to fit allotted time slots. During these conversions, a program’s audio pitch will change, often changing the sound of the program. Correcting this pitch change is simple and quick with the Dolby^° 585 and produces unparalleled, natural-sounding results.

An intelligent algorithm adapts the 585’s processing to the audio it receives. Your audio mix will always sound natural, regardless of whether the program contains speech, music, effects, or a variety of content. The unit maintains phase coherence across all channels, it also ensures high-quality results that can be downmixed, and it preserves Dolby surround (matrix) encoding. A five-step sensitivity control adjusts how focused the algorithm is on the details of the audio material; the “5-high” default setting is appropriate for nearly all material.

The 585 will process PCM audio from any multichannel system, with special consideration for decoded Dolby E and Dolby Digital audio and their associated metadata. The 585 can process up to eight channels of audio simultaneously as one complete audio program or multiple separate programs. For example, it can process a 5.1-channel program and a stereo program at the same time, four stereo programs, or even eight mono programs.

Multichannel audio can be pitch shifted up or down by as much as 15 percent in real time. Alternatively, the unit can store audio in its internal memory for time scaling. In this mode, the 585 can scale audio programs up to 15 percent longer or shorter than the original while maintaining proper pitch. Memory capacity is approximately 23 minutes of mono audio, 11.5 minutes of stereo audio, and four minutes of 5.1-channel audio.

For time scaling or pitch shifting multichannel audio material for film, music, DVD, or DTV applications, the Dolby 585 Time Scaling Processor is a simple, easy-to-use solution giving unparalleled high quality, every time.