Directional Array Pickup

reSpeaker 4/6-mic array provides 3–5m directional pickup, built-in AEC echo cancellation, and DOA < 5° localization

On-Prem Live ASR

reComputer edge host runs SenseVoice with 12–48 streams concurrency and 167ms~583ms typical latency (J3011 167ms / J4012 505ms)

Local Privacy Redaction

Raw audio stream never leaves the device; reComputer redacts sensitive data on-premise under 50ms before text export

Scenario details

For fixed counters such as retail checkouts, bank and public service windows, pharmacy desks, and consultation tables. The three tabs below cover what the on-site AI hardware does.

Clear Pickup in Noise

Pain Points & Challenges

Bank counters, public service windows, and retail checkout lanes suffer background chatter, keyboard clicks, and queue chimes; basic microphones record distorted audio that severely degrades downstream speech-to-text accuracy.

Edge AI Solution

Deploy reSpeaker 4/6-mic arrays on counters with built-in AEC and noise reduction for 3–5m directional pickup and DOA < 5° error, suppressing lateral noise to focus on counter dialogue.


Core Advantages

  • On-Chip DSP: reSpeaker built-in AEC and noise suppression filter ambient interference
  • Directional: 4/6-mic array delivers 3–5m directional pickup with DOA < 5°
  • Plug & Play: Standard UAC interface delivers clean 16kHz audio over USB

Echo & Noise Suppression

reSpeaker built-in AEC and noise suppression deliver up to 20dB reduction; edge boxes receive pre-processed clean audio.

Directional Pickup

4/6-mic beamforming locks onto speakers with 3–5m pickup and DOA < 5° localization error.

Plug-and-Play USB

The array connects as USB audio; acoustic tuning is preset, no on-site calibration.

Retail Voice

Ready to deploy
$npx -y @seeed-studio/solution-cli deploy retail_voice
View full design & BOM →

Local Live Transcription

Pain Points & Challenges

Branch outlets generate thousands of daily customer dialogue recordings; streaming all audio to headquarters clouds consumes heavy WAN bandwidth and exposes sensitive IDs, account numbers, and passwords to compliance hazards.

Edge AI Solution

Deploy a low-power reComputer edge host in branch cabinets to run SenseVoice ASR (TensorRT / RKNN fp16) with 167ms~583ms typical latency, redacting sensitive data locally and uploading only structured text.


Core Advantages

  • Live ASR: SenseVoice transcribes on-prem with 167ms~583ms typical latency per sentence
  • Audio Privacy: Raw audio streams never leave the device; speech is redacted on-prem
  • Offline Resync: Sentences cache locally during outages and resume on reconnect

Edge Transcription

reComputer edge hosts benchmarked 12–48 streams (J4012 48-ch / J3011 32-ch / RK3576 12-ch) with SenseVoice typical latency 167ms~583ms.

Text-Only Upload

Raw audio streams never leave the device; entity redaction runs on site, uploading structured text only.

Keeps Recording Offline

Each sentence is stored locally and uploaded later; results reach your system over HTTP.

Retail Voice

Ready to deploy
$npx -y @seeed-studio/solution-cli deploy retail_voice
View full design & BOM →

Speaker Separation

Pain Points & Challenges

Single-channel recordings blend employee and customer voices into an inseparable stream; automated systems cannot tell who uttered which phrase, rendering employee compliance checks and service rating rules unusable.

Edge AI Solution

Combine reSpeaker mic arrays and reComputer edge hosts with diarization algorithms and DOA < 5° localization, segmenting timestamps within 20ms frames into structured turn-taking dialogue.


Core Advantages

  • Role Separation: Combines DOA < 5° localization and diarization to parse dialogue
  • Voiceprint Enrollment: Enroll staff voiceprints locally on reComputer with 3–5 phrases
  • Privacy & Security: Raw audio and voiceprint vectors remain on the edge host

Speaker per Sentence

Every sentence includes speaker tags and timestamps with DOA < 5° localization for precise role-based lookup.

Staff Voiceprints

Enroll staff voiceprints with 3–5 phrases locally on reComputer, matching against a 100-person database in seconds.

Voiceprints Stay Local

Feature vectors and raw audio are stored on the edge box with on-premise redaction, never uploaded to the cloud.

Retail Voice

Ready to deploy
$npx -y @seeed-studio/solution-cli deploy retail_voice
View full design & BOM →

Deployment & Selection Guide

The configurator narrows it down to a model by transcription mode, pickup setup and compute; the two architectures and device comparisons are in the cards below.

Not sure which to choose? See the full selection guide →

Transcription Mode

Configure Your Solution

Choose transcription mode and collection devices as needed to generate a recommended list.

  • Cloud Transcribe Kit

    reSpeaker collection → network → SenseCraft Voice transcription → analytics dashboard

    硬件/物料名称数量型号/SKU说明
    reSpeaker XVF3800 with Case (cased, plug-and-play on the counter)1114993701-
  • Local Transcribe Kit

    reSpeaker collection → local AI box ASR → optional cloud sync

    硬件/物料名称数量型号/SKU说明
    reSpeaker XVF3800 with Case (cased, plug-and-play on the counter)1114993701-
    reRouter CM4 (entry-level local transcription)1110110205-

Deployment Architecture

Cloud gateway relay or offline edge ASR

Cloud transcription streams audio to cloud via gateway without local edge box; on-premise mode runs offline ASR on edge box with audio kept local. Both setups share the same front-end mic arrays.


Core Advantages

  • Cloud Pipeline: Lightweight gateway streams audio without on-site compute
  • Offline Privacy: Edge host transcribes locally so audio never leaves premises
  • Shared Hardware: Both deployment modes use identical front-end mic arrays
ImageProductTierCapabilitiesMeasured StreamsScale
reRouter CM4 1432reRouter CM4 1432EntrySingle-language local transcription1–2 streams (CPU)Small single-point deployments, validated reference design
reComputer AI R2130-12reComputer AI R2130-12AdvancedReal-time multilingual transcription6 streams (p95 1173 ms)Medium scale, latency-sensitive
reComputer J4012reComputer J4012High throughputReal-time multilingual transcription48 streams (p95 789 ms)Many concurrent streams on one box
reComputer J3011reComputer J3011High throughputReal-time multilingual transcription32 streams (p95 293 ms)Many concurrent streams on one box
reComputer RK3576-30reComputer RK3576-30StandaloneMultilingual transcription + local analysis12 streams (p95 1067 ms)High privacy or offline environments
reComputer RK3588-30reComputer RK3588-30StandaloneMultilingual transcription + local analysis8 streams (p95 902 ms)High privacy or offline environments

Local Transcription Hosts

Edge hosts run offline ASR with zero leaks

Edge hosts run offline transcription on-premise so audio never leaves the store. Match compute tiers by stream count and offline analysis needs; see measured throughput on the left.


Core Advantages

  • High Throughput: Single box handles up to 48 concurrent live streams
  • On-Device Masking: Sensitive fields are redacted on site with zero leakage
  • Turnkey Setup: Validated official reference design ready for deployment

Retail Voice

Ready to deploy
$npx -y @seeed-studio/solution-cli deploy retail_voice
View full design & BOM →
ImageProductTypeRangeCoverageAmpAlgorithms
reSpeaker LitereSpeaker LiteLinear dual-mic~3m180°5WAEC · DoA
reSpeaker XVF3800reSpeaker XVF3800Circular quad-mic~5m360°5WAEC · DoA · Multi-beam
reSpeaker XVF3800 (with Case)reSpeaker XVF3800 (with Case)Circular quad-mic~5m360°5WAEC · AGC · DoA · VAD · Multi-beam
reSpeaker Flex Circular-4reSpeaker Flex Circular-4Circular quad-mic~5m360°10WAEC · DoA · Multi-beam
reSpeaker Flex Linear-4reSpeaker Flex Linear-4Linear quad-mic~5m180°10WAEC · DoA · Multi-beam

Audio Capture Devices

Select mic arrays by distance and coverage

Pick directional arrays for 1-on-1 counters; circular arrays for service desks; and Flex for 10W amp or custom enclosures.
* For wearable mobile badges, see In-Person Conversation Intelligence.


Core Advantages

  • Directional Dual-Mic: Beamforming suppresses side noise within three meters
  • Omni Quad-Mic: Circular four-mic array covers 360 degrees at service desks
  • Preset Acoustics: Pre-tuned DSP algorithms plug and play over USB

Frequently Asked Questions

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