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NR60：Noise Reduction Audio Processing Module
Output Power:
Certification: Others
Type: Wireless Audio
Size (mm):14.01*10.01mm
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NR61 Echo Cancellation & Noise Reduction Audio Processing Module
The NR61 is a general-purpose, portable, low-power, high-performance AI-based noise reduction module for voice processing. It supports noise suppression and AEC, making it suitable for full-duplex communication in vehicles, building intercoms, counter/window systems, conference calls, headsets, and hands-free devices. It handles wind noise, howling feedback, keyboard noise, traffic noise, music, and crowd noise, with EQ, AGC, and serial command volume configuration.
Parameters | Condition | Min. | Typ. | Max. | Unit |
Power Supply | 3.3 | 5.5 | V | ||
Working temperature | -20 | 25 | 85 | ℃ | |
Current consumption | |||||
Operating current | 30 | mA | |||
Noise reduction parameters | |||||
Signal-to-noise ratio | Signal power to background noise ratio | -5 | |||
Maximum noise suppression | Microphone ambient noise | ≤80 | db | ||
Voice distance | Distance from the person to the microphone | <10 | cm | ||
Processing Latency | 84 | ms | |||
Startup Time | Power-on to valid output | <200 | ms | ||
Interface Characteristics | |||||
Microphone Input | Differential | 1 | |||
Reference Input | AEC | 1 | |||
Audio Output | HPOUT | ||||
Configuration Interface | Parameter configuration | UART | |||
Features
Designed for near-field noise reduction, best performance when the voice is within 10 cm of the microphone
Environmental noise suppression ≤80 dB
Filters non-human voice noise such as:
Steady-state noise
Music noise
Wind noise
Transient random noise
Mechanical noiseNoise reduction latency: 84 ms from MIC input to HPOUT output
Sampling rate: 16 kHz, 16-bit
Adaptive AEC (Acoustic Echo Cancellation)
Deep-learning based noise reduction algorithm
Application
Online video conference systems
Hospital call systems
Building intercom systems
Bank counter communication systems
Any scenario requiring background noise suppression
Pin NO | Pin name | I/O | Description |
1,4 | GND | Connect to power ground | |
2 | RXD | I | Serial data reception (connect to MCU TXD) |
3 | TXD | O | Serial data transmission (connect to MCU RXD) |
5 | VCC | External power supply positive terminal(Minimum 3.3V, Maximum 5.5V) | |
6 | HPOUT | O | audio output pin is typically connected to the MIC_IN pin of the customer's product |
7 | SPK | I | Reference audio input (speaker output) |
8 | NC | I | Floating (Not connected) |
7 | MIC- | I | Microphone negative input pin |
8 | MIC+ | I | Microphone positive input pin |
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