WorldCast improves APTmpX, its compression algorithm for radio broadcasts

APTmpX, the compression algorithm for radio broadcasts WorldCast Systems, already has new versions that offer different levels of compression.

APTmpX seeks to reduce hardware and distribution costs that were previously associated with the architecture of standard FM network. The initial version of APTmpX, released in October 2020, offered FM broadcasters access to high-quality signal compression for the resulting centralized FM MPX/Composite broadcast. This solution was applied to compressions less than 900kbps.

Following recent optimization carried out by WorldCast engineers, APTmpX receives three new versions offering new levels of compression to 600, 400 or 300kbps network bandwidth. This achievement, according to WorldCast itself, means that the composite signal can now be directly transported with non-destructive compression from 600kbps to 300kbps “with maximum sound quality.”

Gregory Mercier, director of product marketing at WorldCast Systems, believes that these new versions will allow broadcasters in areas of low bandwidth penetration “to offer impressive audio quality to their audiences, regardless of what they are listening to.”

APTmpX Keys

Using APTmpX confers several advantages, according to WorldCast Systems. The algorithm is presented with a “excellent packet loss resistance”. Likewise, APTmpX is a solution “flexible” as it can connect to analog or digital MPX sources and receivers. APTmpX is also adapted for environments FM-SFN, as it “maintains maximum signal transparency at multiple transmission sites, while being fully compatible with SynchroStream, the highest signal synchronization technology.”

“APTmpX combines signal fidelity with the best latency performance and makes it easier than ever to ensure a consistent sonic signature across the entire transmitter network,” says WorldCast Systems.

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