Review on 💨 Experience Optimal Air Circulation with the Vornado 154 Whole Room Air Circulator Tower Fan, 32 by Veronica Toledo

Vornado 184 airflow is good in 3rd and 4th gear. At level 1, the fan is barely audible, which is good for a good night's sleep. But at 3 and 4 speeds there's a low-frequency rumble that physically cuts through the ears. We endure the buzz for 10 minutes, but if longer, my ears began to hurt. Some measurements were performed on the Vornado 184 sound profile using the Spec Scope and Physics Toolbox apps on the Pixel 3. For comparison, the old Lasko used high speed. The Pixel 3's microphone is only sensitive to a 24kHz signal. Any data after that is considered irrelevant. Test 1 - FFT with Pixel 3 at 6 inches from fan. The affected frequencies of the Vornado 184 start at 100 Hz to 24 kHz. The largest shift at high frequencies (2 kHz) was 28 dB. For the strongest bass shift (150Hz) as a 14dB change Test 2 - FFT with Pixel 3 at 10ft from fan. The FFT profile is similar to Test 1. Not surprisingly, the FFT is designed to observe spectral energy at different frequencies, not loudness. Test 3 - Volume with Pixel 3 3m away from the fan. Fan speed 1 - 47dB. Fan speed 2 - 52dB. Fan speed 3 - 57dB. Fan speed 4 - 62dB. how many frequencies are detected, basically a density plot. Fan speed 1 - The densest range is in the range from 0 Hz to 1 kHz. From 1 kHz to 2 kHz the density decreases. Fairly smooth from 2kHz to 10kHz. The density starts to increase from 10 kHz. Fan level 2 is almost the same as level 1, except that the densest range lasts up to 2 kHz. Fan speed 3 - the densest area now reaches 4kHz. Fan speed 4 is the biggest change, with the narrowest range going up to 12kHz. Check out the attached photos for all the different charts.