Fundamentals: Science, Sound Types & Safety

Learn how looping sound triggers infant arousals and disrupts sleep, then switch to continuous 40–45 dBA audio and simple checks for calmer nights.

Use sound machines strategically while baby is awake: brief nature sounds at 40-45 dBA, measured at ear level, with quiet intervals to encourage babbling.

Learn how white noise affects infant language processing and sleep, with practical advice on safe volume, timing, placement, and healthier sound options.

Focus on crib-distance measurements, not box specs: place the machine 7–8 feet from the crib and target 45–50 dBA with dBC no more than 5 dB higher while avoiding spectral peaks. Get clear steps for accurate phone-based testing and room-specific placement so masking works without overstimulating infants.

Use white noise safely and effectively by targeting 50–60 dBA at crib distance, choosing spectrally smooth sound, and placing the machine 6–8 feet away angled from the crib. Follow meter-based checks and avoid tonal peaks to mask noise without risking auditory strain or sleep disruption.