New ECM & MEMS Microphones

PUI Audio is proud to introduce a new line of high-performance ECM (Electret Condenser Microphone) and MEMS (Micro-Electro-Mechanical Systems) microphones, manufactured outside China. This expanded offering gives customers greater sourcing flexibility while maintaining the exceptional quality, reliability, and acoustic performance PUI Audio is known for.

ECM (Electret Condenser Microphone) microphone: Our ECM models feature a diaphragm positioned in front of a backplate embedded with electret material, which holds a permanent electric charge. When sound waves strike the diaphragm, it vibrates, leading to variations in the capacitance between the diaphragm and the backplate. These capacitance changes are then converted into an electrical signal, which is amplified by an internal Field Effect Transistor (FET) and transmitted to the output.

MEMS microphone: The MEMS microphone models feature a specialized preamplification ASIC that delivers high sensitivity and excellent signal-to-noise ratio from a compact capacitive audio sensor. Designed for surface mounting and high-temperature reflow assembly, these microphones combine ultra-low current consumption with low distortion and a high acoustic overload point— providing exceptional dynamic range and reliability.

With these advancements, PUI Audio continues to offer competitive, high-performance solutions for today’s audio applications.

Key Applications

• Medical Devices: Wearables and fitness trackers for voice control and audio recording, Respiratory monitoring – sensing breathing sounds or coughs
• Industrial Applications. In machine monitoring and production lines to detect malfunctions or predictive maintenance. In-cabin operator safety systems to monitor audio cues in harsh environments
• Security Monitoring Devices. Ideal for glass-break detection and acoustic-based fire alarm systems requiring precise, high-SNR audio input.
• Microphone Arrays. Supports beamforming, noise cancellation, and directional voice capture in multi-mic configurations
• Consumer Electronics. In earphones, smart IoT devices, and voice-controlled assistants for clear, low-noise audio capture.