Category information-technology-english

I added a synthesizer’s unison function to the electronic piano on this page. By moving the Detune1 and Detune2 sliders in the Unison frame, you can superimpose oscillator sounds with slightly different frequencies. The oscillator with the frequency of the…

I updated the digital piano on this page so that the gain changes according to the ADSR (Attack, Decay, Sustain, Release) parameters when the keyboard keys are pressed and released. # It works mostly stable with Chrome and Edge on…

When I changed the keyboard layout of the digital piano on this page, I removed the hover (color changes when the mouse hovers over a key) and active (color changes when a key is pressed) effects from the white and…

I changed the keyboard layout of the electronic piano on this page. Volume: Current waveform: Sine Square Sawtooth Triangle Custom The main change is to prepare the black keys as the child elements of the white keys in JavaScript that…

The time variation of the sound amplitude after pressing a key on the digital piano on this page has been changed. Although it is different from the sound of a piano, it seems a little closer to the sound of…

I prepared a page for a digital piano using Web Audio API based on this page. This code is just a modification of the sample code. I applied the following modifications: i. added black keys, ii. used a function to…

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…