The frequencies of the notes of the 88 piano keys are tabulated. The sounds with these frequencies are output by the Web Audio API’s OscillatorNode. The frequency of a note doubles in an octave and the frequency of the 12…
I measured the acceleration spectrum of Gifu bus vibration with phyphox (Physical Phone Experiments). The measurement method is the same as this blog which measured the acceleration spectrum of the vibration of a washing machine. Sitting in the right-most seat…
I measured the sound of Web Audio API’s OscillatorNode with phyphox (Physical Phone Experiments). I set four different waveform parameters for the OscillatorNode: sine, square, sawtooth and triangle. All frequencies were set to 440 Hz. Click the buttons below to…
I applied Bootstrap (v5.0.2) to a specific region of WordPress post. 1. When creating a new post for this blog, I selected Text tab in Classic Editor and entered the following text. I pressed the Preview button to check it…
On March 12 (Sat.), 13 (Sun.) and 19 (Sat.), 2022, I walked around Nagara Bridge, Gifu Park, Mt. Kinka and Gifu Castle. I took photos with my smartphone and recorded GPS logs. GPS logs were recorded with phyphox (Physical Phone…
I recorded guitar sounds audio spectra with phyphox(Physical Phone Experiments). 1. I recorded audio spectra of the following acoustic guitar by plucking the 1st and 6th string. 2. I clicked the buttons pointed with the green boxes in the following…
I wrote the procedure to read Google Sheets from Google Charts on this page before. Anyone can read the Sheet data with this method. Google Charts document describes the method to read Google Sheets with authentication on this page. I…
This is a memo on how to record data from the 3-axis accelerometer with phyphox (Physical Phone Experiments) and estimate the number of steps walked while recording the data. I walked up and down the stairs this time. I used…
I measured an acceleration spectrum of a washing machine with phyphox(Physical Phone Experiments). I watched movies of phyphox featuring acceleration spectra of washing machines before. I think it’s easier to understand the physical meaning of acceleration spectra of vibrating equipment…
On Wednesday, February 23, 2022, a national holiday (Emperor’s Birthday), I took a walk at Gifu City Chikusan Center Park. I took photos with my smartphone and recorded GPS logs with phyphox (Physical Phone Experiments). I recorded phyphox GPS logs…
