D*AP LM4 incorporates Version II of the company’s Level Magic™ adaptive loudness algorithm, which is compliant with all current broadcast audio loudness recommendations including ITU.1770 (versions 1 and 2), ATSC A/85, ARIB TR-B32 and EBU R128. Based on a Multi-Loop dynamic range control principle where slow changes (AGC), fast changes (Transient processing) and look ahead true peak limiting are handled simultaneously, LEVEL MAGIC™ offers level management with exceptionally high audio quality and without coloration, pumping, breathing, distortion or modulation effects. LM4 focuses on automatic and adaptive loudness control and sound processing for up to four channels of audio. All system parameters are remotely accessible allowing the unit to be integrated and remote controlled by broadcast control or scheduling systems via HTTP, emBER, SNMP or even simple GPI/O’s. A web interface allows easy and intuitive set up and configuration. Audio I/O‘s range from: on board AES I/O to optional 3G/HD/SD SDI I/O or even analog I/O. All interfaces support power fail bypass as standard. With optional redundant PSU the unit ensures maximum operational security.
- Level Magic™ II Loudness Management according to EBU R128, ITU.1770-2, ATSC A/85 (ITU.1770-1), ARIB TR-B32
- 4-ch DSP processing / 16ch SDI support
- Detailed loudness monitoring and metering with optional LoudnessLogger GUI
- Dynamics Section (Compressor / Expander)
- Optional SPECTRAL SIGNATURE™ dynamic EQ
- Front Panel Operation
- Web Interface based setup and configuration
- User Friendly Preset Functions
- Digital I/O AES/EBU
- Optional: 3G/HD/SD-SDI I/O, analogue I/O
- Power Fail Bypass Relais
- External control via HTTP, emBER, SNMP or GPI/O’s
- Relay bypass (manual or automatic on power fail)
- 320 ms video delay (number of frames depends on the video format)
- 16 channel audio de-embedder/embedder
- VANC (SMPTE 2020-2) de-embedder/embedder
- 16 x 16 de-embedder matrix (mono routing)
- 20 x 16 embedder matrix (mono routing)
- 0…320 ms audio delay per audio channel
- Automatic compensation of non processed audio signals for video delay