Summary
Three audio processors in one box: OPTIMOD Trio
Compact in its design but big in functionality: OPTIMOD Trio can be configured as AM Audio Processor, as FM Audio Processor or alternatively as HD Radio/DAB+/Streaming Audio Processor. In the HD Mode, Trio is even suitable for TV audio processing. No matter if you need to have a flexible backup unit, your requirements for an audio processor might change or if you simply want your audio to sound the best it can, OPTIMOD Trio does the job.
Features
FM Operating Mode: OPTIMOD Trio provides four FM processing structures: Five-Band, Low-Latency Five-Band, Ultra-Low-Latency Five-Band and Two-Band. Additionally, it can be also used as stand-alone stereo encoder with latency as low as 2 msec and full overshoot limiting in both the left/right and composite baseband domains. The defeatable ITU BS.412 Multiplex Power Controller constrains MPX power smoothly and reliably, ensuring compliance in countries that regulate it. An onboard RDS/RBDS generator supports dynamic PS scrolling and IP access. The optional μMPX Interface allows you to transmit DMPX over IP if you are using the FM operating mode.
AM Operating Mode: With OPTIMOD Trio you can achieve excellent quality in AM shortwave, medium wave and long wave broadcast sound. It increases the density and loudness of the program material by multiband limiting and multiband distortioncanceling clipping, improving the consistency of the station’s sound and increasing loudness and definition without producing audible side effects. OPTIMOD Trio compensates for the high- and low-frequency rolloffs of typical AM receivers with a fully adjustable program equalizer providing up to 20dB of high-frequency boost (at 5 kHz) without producing the side effects encountered in conventional processors.
HD Operating Mode: You can choose between the Five-Band processing structure for a spectrally consistent sound with good loudness control and the Two-Band processing structure for a transparent sound that preserves the frequency balance of the original program material while also effectively controlling subjective loudness. The “True Peak” limiter anticipates and controls peak levels following D/A conversion, a feature now required by many broadcasters. With our PreCode™ technology several aspects of the audio can be manipulated to minimize artifacts caused by low bitrate codecs often used in HD Radio™, DAB+, and streaming.
Technical Specification
ITU-R BS.1770-4 Loudness Control facilitates compliance with modern target loudness recommendations like EBU R128.
Silence Detection: A programmable silence detector is available for the analog, digital and AoIP inputs. It can generate alarms and allows automatic switching to a backup input/input audio storage.
Streaming Monitor Output: The processed signal can be optionally monitored remotely via IP, allowing processor adjustment in locations where a clean off-air signal is unavailable.
Internal Storage for Audio Backup: An optional 2 GB Flash Memory provides two hours linear or twelve hours AAC, MP3 or
OPUS encoded audio.
Internet Stream Decoder: This optional feature can be used as a backup audio source received via Audio-over-IP.
Audience Measurement: An internal Watermarking Encoder can optionally be added (Kantar, Nielsen or IPSOS).
Dual Power Supplies: OPTIMOD Trio is equipped with monitored dual-redundant power supplies.
Audio Input Channels: 1 x stereo analog, 2 x stereo digital AES3, 2 x stereo AoIP
Audio Output Channels: 1 x stereo analog, 2 x analog MPX/composite, 2 x stereo digital AES3 or 1 x stereo digital AES3 and 1 x DMPX (configurable), 2 x stereo AoIP, 1 x headphone output (for monitoring), Optional 1 x µMPX (DMPX over IP), SCA Inputs: 2 x TBA
Synchronisation: 10 MHz clock input, AES11 sync input, 19 kHz pilot tone reference output
GPIOs: 8 x inputs, 2 x outputs
Latency: 4 – 22 msec (depending on the processing structure)
Low-latency AES Output: 3 – 8 msec
IP Network: 1 x RJ45 Ethernet Management, 1 x RJ45 for AoIP
