Test site
The test site is a separate front-end of the site for testing new instruments and features before pushing them to the main branch. You can access it by adding test.onlinesequencer to the URL of a page. On the test site, profile pictures and playlist thumbnails will not load, the interfaces for sequence pages are older, and the forum/wiki lacks formatting or are not found respectively.
Synthesizer
Currently being tested is an adjustable synthesizer instrument (ID 55). Similar to the 8-bit instruments, it makes use of the Web Audio API instead of samples. When selecting the instrument, the synthesizer tab is shown, with the following options:
- Waveform: the base waveform and sound to use for the instrument. Can be sine, square, sawtooth, or triangle.
- Filter: The type of filter pass and frequency to use can be selected with the dropdown menu and slider. A low pass, high pass, and band pass are available.
- Currently, it seems like the high pass and band pass are mislabeled as each other.
- Resonance: A slider controlling the resonance of the filter.
- Oscillator waveform: The waveform to use for the oscillator.
- Oscillator frequency/toggle: Allows you to turn the oscillator on or off, along with its period relative to a measure or by frequency.
- Oscillator type and amplitude: The dropdown menu allows you to select what the oscillators affects; volume, pitch, and the filter intensity can be adjusted. The slider controls the effect of the oscillation.
- ADSR: ADSR can be toggled on the left side of the tab. When enabled, the ADSR sliders will control the attack, delay, sustain, and release of the synthesizer.