There many apps and service that can help people to check their sleep quality in-home use, these apps and services still have some problems. For example, the type of snore checker app is very popular to calculate the numbers of a snore for sleep analysis at night. However, it may cause low accuracy because of the noise of background and cause privacy issues of recording audio analysis.
Slewell Tech is a startup using full-frequency recording technology to detect sleep condition. Slewell Tech uses the recording device to record the full-frequency (over 20 kHz) audio data of sleep period and to convert audio spectrogram as the graphics instantly. And using the audio graphics such as the spectrogram to classify different types of sounds, such as normal, snore, hypopnea, apnea, deep breath, and others. Full-frequency spectrogram can also detect the noise of the sleep environment to analyze the quality of sleep, such as noise from pets, vehicle, and even ultrasound.