Audio Precision expands PDM channel count
- Details
PDM 16 is an optional interface module for the APx555, APx52x Series or APx58x Series audio analysers. Comprised of the input module installed in the analyser, a remote interface pod and an extension cable, the module provides sample-accurate inter-channel phase information, critical data for the creation of MEMS mic arrays. Developers of systems using beam-forming microphone arrays and other DSP-based multi-channel audio acquisition applications depend on a true representation of phase alignment of the input channels to validate their algorithms and designs. PDM 16 utilises synchronous sampling based on a common clock, thereby assuring a clear picture of the phase relationship between channels.
“With today’s smart devices incorporating as few as three and as many as seven MEMS microphones, the ability to conduct simultaneous, multi-channel test is critical for developers in evaluating their designs,” states Mike Flaherty, Audio Precision chief executive officer. “Our PDM 16 module’s multi-channel capability, acoustic test-friendly design, and ability to deliver sample-accurate inter-channel phase information make it the ideal measurement choice for MEMS mic designers and mic array developers alike.”
(Jim Evans)
