Solution · Mic-Array Front End

Let your device hear one clear sentence from 5 meters away

4-Mic Ring Array · Beamforming · AEC

A complete combination of high-SNR silicon microphones and beamforming references: from cavity simulation and array layout to algorithm porting and production calibration, Juchip FAEs deliver clear hearing as repeatable engineering, not lab demos.

Far-field pickup: 5 m
Beam coverage: 360°
Array format: 2 / 4-Mic
Array SNR: 65 dB(A)

Ask for Reference Design Book Array Layout ReviewMaterials and reviews via inquiry

System Architecture

Signal chain: from four sound ports to one text stringAcquisition → Conditioning → Recognition

Sync Acquisition

Four JSM3526 PDM mics share one clock with L/R latched assignment; sampling skew below one bit-clock.

JSM3526DB26UJ0

Echo Cancellation

AEC against the speaker reference path keeps wake words audible during self-playback.

AEC · Double-talk

Spatial Filtering

Beamforming maximizes gain toward the talker while suppressing lateral fan/TV noise.

Beamforming · MVDR

Recognition Output

Clean speech feeds wake/ASR engines; mutual certification with three leading voice SDKs.

KWS · ASR Ready

Bill of Solution

What You Get: Hardware, Algorithms & SupportWhat You Get

Array core ×4JSM3526DB26UJ065 dB(A) · direct PDM · L/R select — built for arrays

Smart upgrade slotJSM2691On-chip VAD/KWS for designs without an external DSP

Samples & FAE SupportSamples · FAE supportArray reference layout, interface timing and algorithm adaptation advice via inquiry

Deliverables

Six engineering deliverables, more than chips soldEngineered Handover

Cavity Simulation & Layout Review

Simulation review of cavity and port layout with guidance on isolation, resonance and SNR impact.

Reference Schematic & PCB Layout

Production-grade reference with PDM bus length matching, clock isolation and decoupling.

Beamforming & AEC Porting

Fixed-point algorithms and tuning manuals for mainstream DSP/SoC platforms.

Production Calibration Tooling

Full-inspection station setup, acoustic calibration limits and takt evaluation.

Acceptance Test Suite

Standardized scripts and cases for far-field pickup, wake rate and noise scenarios.

Algorithm Ecosystem Certification

Array solution mutually certified with three leading voice algorithm vendors.

Why Array

Single, dual or 4-mic array: how to chooseTrade-offs, Honestly

Dimension	Single Mic + SW NR	2-Mic Diff	4-Mic Array (This)
Effective pickup range	<= 1 m	1-2 m	3-5 m typical living room
Directional selectivity	None	Weak front/back	±30° steered beam
Robustness in noise	SNR dependent	Medium	Spatial filter + AEC
BOM & mechanical cost	Lowest	Low	Medium (4 pcs + board area)
Algorithm & tuning effort	Low	Medium	Carried by reference design
Best fit	Earbuds, near-talk	Small speakers	Smart speakers, conference, cockpit

Comparison reflects typical engineering experience for selection discussion, not committed metrics; real results depend on cavity, algorithms and the whole device.

Target Products

Proven in these product formsWhere It Ships

Smart Speaker4-mic ring top array, wake-able during self-playback

Soundbar / Omni Mic5 m table pickup with cascaded speaker direction

In-car Hands-free VoiceMulti-zone headliner/seat pickup on one array with AEC

Implementation

Four steps to bring the array into your deviceFrom Kick-off to Mass Production

Requirement AlignmentWeek 1

Product form, pickup distance, noise scenes and cost targets -> array topology proposal.

Cavity & Layout DesignWeek 2–3

Cavity simulation + reference layout review; lock mic positions, guides and isolation.

Algorithm Co-tuningWeek 4–6

BF/AEC joint tuning on the algorithm vendor's reference platform; run far-field acceptance cases.

Mass-production CalibrationMP+

Calibration tooling onto the line with SPC monitoring; supports hundred-million-level yearly delivery.

Bring your device drawings - we validate the array in our lab

Submit device dimensions and pickup targets; FAEs return an array topology proposal and test plan within 5 business days.

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