CEDAR-20 Production System
The CEDAR-20 Production System supported a range of real-time processes that preceded and later complemented the major CEDAR for Windows functions. Hosted by a conventional PC running DOS, and powered by the twin 40-bit floating-point DSPs of the CEDAR ProDSP/R-20 board, the system offered a full range of audio restoration, equalisation and dynamics processing modules. All of these operated in real time, allowing easy A/B comparison of the processed and unprocessed signals. The system is still used in restoration studios worldwide.
All CEDAR-20 products are now deleted and can no longer be supported.
The ProDSP/R-20, and upgrading to CEDAR for Windows
CEDAR for Windows could access existing ProDSP/R-20 boards and treat them as ProDSP/E Expansion boards. Because no trade-in of the ProDSP/R-20 was required, it was simple and cost-effective to upgrade from a DOS-based CEDAR system to a CEDAR for Windows suite running multiple applications simultaneously.
Running CEDAR-20 under Windows 3.x
Users with both CEDAR-20 and CEDAR for Windows systems could run them simultaneously under Windows 3.x. In this case, the ProDSP/R-20 would support the CEDAR-20 software modules, and did not appear in the CEDAR for Windows console.
The ProDSP/R-20 offered 24-bit I/O when used as a ProDSP/E and initialised under CEDAR for Windows. It returned to 20-bit operation when used to host any CEDAR-20 processes.
Running CEDAR-20 under Windows 95
It was not possible to run CEDAR-20 and CEDAR for Windows simultaneously under Windows 95. However, users could run CEDAR-20 as a stand-alone DOS application under Windows 95 provided that CEDAR for Windows was not loaded.
- AES/EBU and SPDIF I/O
- 120dB or 144dB dynamic range, dependent upon application
- 44.1kHz, 48kHz, 32kHz sampling rates supported
- Audio connections via 15-way D-connector (breakout cables supplied)
- Twin floating point AT&T DSPs with 1Mb zero wait-state RAM
- 40-bit maximum internal resolution
- >750dB DSP Dynamic range
- 25MFlops applied per audio channel