Tieline to unveil two new codecs at NAB Show 2023: MPX I and MPX II

Tieline will unveil two new MPX codecs at NAB2023. MPX I and MPX II codecs deliver composite FM multiplex (MPX) codec solutions for real-time network distribution of FM-MPX or MicroMPX (µMPX) signals to transmitter sites.

MPX I transmits a composite STL signal from a single station with return monitoring. MPX II can transport two discrete composite FM-MPX signals from the studio to transmitters with return monitoring. Both units support analog MPX on BNC, MPX over AES192, and multipoint signal distribution.

The codecs support sending the full uncompressed FM signal, or high quality compressed µMPX at much lower bit-rates. An optional satellite tuner card with MPEG-TS and MPE support can receive DVB-S or DVB-S2 signals.

“Tieline is excited to unveil two new MPX codecs which leverage our longstanding expertise in audio encoding to flexibly and reliably distribute composite signals to transmitter sites,” said Charlie Gawley, VP Sales APAC & EMEA. “By supporting both analog and digital composite MPX signals, broadcasters can transition from analog to digital exciters over time and maximize the value of their MPX investment.”

Sending transmission-ready FM composite signals from the studio allows broadcasters to maintain audio processing and RDS data insertion at the studio. Composite MPX over IP signals can be replicated and distributed using multicast and multi-unicast technologies. Users can take advantage of redundancy features like redundant streaming, RIST, FEC, and automated SD card file failover.

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