Cedar Audio Duo Auto Dehiss

Despite being told for many years that it was impossible, CEDAR Audio developed auto-dehissing because traditional noise reduction methods are - for most purposes - less than ideal. Dual-ended processes require encoding and do nothing to remove noise already present in a signal. Low-pass filters remove as much wanted signal as noise. Dynamic filters pump, round off transients and dull the genuine signal. Gates remove no noise when open. Expanders pump, and multi-band expanders have poor separation filters, leading to loss of high frequencies, loss of ambience, and degradation of hard transients.

So, for those occasions when it is inappropriate to employ a fully-featured, computer-based noise reduction system, we developed auto dehiss, which produces excellent results very quickly and with minimal fuss. The Duo auto dehiss processor incorporates the third generation of this process, which is optimised for consistent noises such as tape hiss and general background noise.

• AES/EBU and SPDIF digital I/O
• MIDI remote control
• 1U rack-mountable

• Sample rate: 30kHz - 100kHz
• I/O Wordlength: 16bit - 24bit
• I/O Format: AES/EBU & SPDIF
• Internal wordlength: 40-bit, fl oating point
• Processing power: 400MFLOPS (peak)
• Latencies: <5 samples (bypass)
• Declickle™: 190ms @ 44.1kHz
• Auto dehiss™: 463ms @ 44.1kHz
• Memories: 99 user defi nable
• MIDI: In/Out/Thru
• Full remote control
• Power supply: 85 - 260VAC; 50 - 60 Hz
• Consumption: 15W

Weight and Dimensions:
• 45 x 483 x 240mm
• Weight: 3kg (nett); 4kg (gross)