Introducing the Seamless Sound Reinforcement Solution PXU316-LA-7MIC

In speaking, meeting, and classroom settings, the Seamless Sound Reinforcement Solution has emerged to enable speakers to communicate freely and comfortably while ensuring listeners can hear presentations clearly and pleasantly.

This sound reinforcement solution aims to provide listeners with a clear, low-latency, and high-fidelity audio experience, while offering speakers a natural and unrestricted amplification experience.

Multi-microphone array sound reinforcement solutions represent the optimal approach for technical upgrades, delivering new experiential features:

• Exceptional directionality that eliminates surrounding environmental noise interference
• Pickup range of 1-3 meters, giving speakers sufficient freedom of movement
• Ultra-low latency, making delay imperceptible to both speakers and listeners
• High-fidelity vocal spectrum reproduction, enhancing the listening experience

Solution Overview

The PXU316-LA-7MIC employs 7-microphone array technology, creating a high-performance sound reinforcement solution. It utilizes Beamforming technology to establish targeted directional pickup sectors while significantly reducing interference from outside these sectors, with noise attenuation of up to 30dB.

Voice enhancement for clearer playback is a priority for this solution. The algorithm processes audio at a 32KHz/24bit sampling rate, ensuring high-fidelity output with frequency response up to 8kHz across the vocal range. The 18ms latency delivers an excellent real-time experience, allowing speakers’ voices to be amplified by over 10dB through speakers without any perceptible delay.

The PXU316-LA-7MIC solution incorporates a high-performance XMOS processor with integrated BF, AFC, NS, AGC, and EQ algorithm modules for sound processing optimization. It supports ultra-low latency and wide-spectrum audio content, transmitting speakers’ voices in real-time with clarity, providing listeners with a more authentic and natural auditory experience without compromising realism or accuracy.

Solution Features

XMOS Controller

Utilizing XMOS’s latest highly flexible and powerful XCORE.AI chip

The XMOS XU316 multi-core processor delivers 800MHz/3200MIPS computing power with 1MB SRAM DSP resources

• Flexibly supports up to 8 PDM microphones and multiple I2S input/output audio interfaces
• The processor provides zero-latency audio interfaces, delivering lower latency for sound reinforcement systems
• Built-in DSP Float point/hardware-level VPU acceleration processing facilitates integration of additional algorithm modules

DSP Algorithm Processing

Integrates multiple algorithm modules for an ultimate sound reinforcement experience

The XMOS chip incorporates multiple DSP algorithm modules, providing a solution optimized for sound reinforcement applications

• 6+1 MIC array beamforming achieves 10-degree DOA and up to 20dB side-lobe suppression for directional pickup
• System latency of just 18ms from microphone input to Line-out output
• Algorithm processing at up to 32KHz@24bit format, with vocal frequency response up to 8KHz
• Supports built-in NS noise reduction and AFC algorithms, achieving sound amplification of over 10dB

Technical Specifications

Audio Specifications

• Microphone input frequency response: 0~16KHz
• Line-out output frequency response: 0~8KHz@0db/1Vrms

DSP Modules

• BF beamforming with adjustable 10~180 degree pickup sector
• DOA angle precision of ±10 degrees
• Side-lobe suppression up to 20dB

Hardware Specifications

• 72mm diameter circular 6+1 microphone array
• Power consumption: 5V@130mA
• System latency: 18ms

Hardware Interfaces

• USB Type-C port (UAC & 5V power)
• 3.5mm headphone jack Stereo out analog output

The PXU316-LA-7MIC is a 7-microphone sound reinforcement solution designed for meeting scenarios, ideal for evaluation and testing by manufacturers of sound reinforcement equipment and other enterprise users.

This solution can be supplied as either a PCBA or complete solution, with Pawpaw providing pre-sales and after-sales technical support.

Pawpaw Official Ordering Platforms

• Pawpaw Electronics Official Taobao Store: http://shop421158522.taobao.com

• Alibaba International Site: http://pawpaw.en.alibaba.com

For more information, please visit the Pawpaw Electronics website:

• Portal URL: https://www.pawpaw.cn

• Documentation URL: https://docs.pawpaw.ltd