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The BT8932D is a high-performance Bluetooth audio SoC launched by Bluetrum, specifically designed for open-ear headphones (such as ear clip-style and over-ear styles). The chip features a 32-bit RISC-V processor core, supports Bluetooth 6.0 (compatible with 5.4+BR+EDR+BLE), and integrates DSP instruction acceleration, AI noise cancellation, and high-definition audio codec functionality. It has been applied in open-ear headphones such as the Besign MC1 and Eli 1i Fit, providing solutions for high-quality sound, low leakage, and long battery life.

BT8932D Core Features

High-performance processor

32-bit RISC-V core (140MHz) with DSP instruction acceleration to optimise audio processing efficiency.

16Mbit Flash + 320KB RAM supporting AI noise cancellation, adaptive bass enhancement, and other algorithms.

Bluetooth 6.0 Dual-Mode Connectivity  

Bluetooth 5.4 + BR + EDR + BLE, supporting low-latency mode (suitable for gaming/video scenarios).

Maximum transmission power +10.5dBm, reception sensitivity -94.5dBm @2M EDR, enhancing signal stability.

Open-Ear Audio Optimisation

Directional sound transmission technology reduces sound leakage and protects privacy.

AI dynamic bass enhancement improves the low-frequency performance of open-ear headphones.

BISA spatial audio supports 360° surround sound.

Smart noise cancellation and call optimisation

DNN intelligent call noise cancellation, supports dual-microphone ENC, improves call clarity.

AI environment sound recognition, adaptive adjustment of noise cancellation intensity.

Low-power design

Integrated PMU (charging/step-down/LDO), optimises energy efficiency.

12-hour battery life per charge (up to 45 hours with charging case), supports fast charging (10 minutes of charging provides 2 hours of playback).

BT8932D Specifications

Processor: 32-bit RISC-V + DSP (140MHz)

Bluetooth Version: 6.0 (compatible with 5.4+BR+EDR+BLE)

DAC/ADC: Stereo DAC (104dB SNR) / Mono ADC (102dB SNR)  

Audio sampling rate: 8~192KHz  

Package: QFN32 (4×4mm)  

Operating temperature: -40°C ~ +85°C

The BT8932D is primarily used in TWS earbuds and open-ear headphones, such as the Baseus MC1 open-ear headphones and SOUNDPEATS Peat POP Clip open-ear headphones. In these devices, the BT8932D delivers robust audio processing capabilities, stable Bluetooth connectivity, excellent noise cancellation performance, and low-power operation, meeting users' demands for high-quality audio and extended battery life.

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