Ultra-wideband (UWB) multicast can send shared audio blocks to many receivers without duplicating a downlink stream per listener. But receiving the same data does not guarantee that devices play in sync or that sound arrives at a listener's ears at the same time from all speakers. This paper builds a unified feasibility analysis that separates clock and actuation error, age-dependent acoustic propagation compensation, correlated block erasures, and reserved communication resources.
Using 4,590 policy–run records from Monte Carlo experiments, the author derives conditional bounds on one-listener arrival spread and a stationary expression for all-receiver block delivery under common and receiver-local losses. For an eight-receiver group, affine clock correction achieves a mean run-level 95th-percentile electronic span of 21.19 microseconds, while position assistance reduces the corresponding one-listener acoustic arrival span from 21.95 milliseconds to 419.43 microseconds.
That acoustic improvement is large, yet the paper notes that under a strict 30-microsecond timing criterion, 98.86% of compensated events still exceed the threshold. For a 64-receiver configuration, three block copies deliver to all receivers with probability approximately 0.97478 under the modeled correlated channel. The analysis exposes distinct failure mechanisms—position age, shared fades, retransmission limits, and schedule saturation—and argues that synchronous multicast audio performance must be interpreted with joint criteria that account for both timing and reliability constraints.