파워보이스 영문 서브2-1-7_TECHNOLOGY_적용기술

This technology is used for communication and control between devices by inserting specific codes or data to audible or inaudible sound frequencies.
Implemented with an encoder for code generation and decoder for code analysis, it provides a range of applications through linkage with smartphones.

Key algorithm

This asynchronous sound wave detection algorithm of low complexity is applied with a signal processing algorithm for reception compensation of smartphones and a coding technique, and thus ensures reception performance regardless of eco environment even without the guard interval. SoundLife guarantees a recognition rate of 99.5% based on a distance of 5m from its home environment.

Single carrier wave-based M-ary FSK type sound wave communication: Encoding and decoding algorithm powerful for echo removal; Convenient to secure and regulate SNR; Applied to diverse fields with a small amount of resource utilization
Low-end/ low-power CPU embedded optimization design: 20 MIPS CPU; 20KB memory; Embedding in Coretex M3 in software format; Implements IOT between smartphones and electronic appliances
Concurrent execution of voice recognition and sound wave communication: Concurrent execution of voice recognition and sound wave communication; Concurrent decoding in voice frequency and sound wave frequency bands; Provides more diverse HMIs