Hearing Aid
- BTE (behind-the-ear) hearing aid using a zinc-air battery with size 675
- Configurable for mild, medium, severe, and deep hearing impairments
- Personalized equalization via programmable digital signal processing
- Design and development of hardware, firmware, and software
- External programming module for configuration and customization with its own firmware and PC software
- Volume control knob and button for operation mode selection
- Special-purpose microprocessor for hearing aids
- Dual microphone for audio directionality processing
- Receiver with vibration reduction mechanism under high power output
- Configuration connector with a 2-wire interface (bidirectional data)
- Signal processing features include selective filtering and acoustic echo cancellation
- Firmware developed in assembly language for noise suppression, selective amplification (using the filter bank coprocessor), user control handling, configuration port, battery monitoring, and general control
