Endless Dream inherits beatoraja’s flexible audio stack and extends it with per-chart volume normalization. All audio settings live in the Audio tab of the launcher and are stored in theDocumentation Index
Fetch the complete documentation index at: https://mintlify.com/seraxis/lr2oraja-endlessdream/llms.txt
Use this file to discover all available pages before exploring further.
audio object inside config_sys.json. Getting audio right — particularly the buffer size — is the single most effective thing you can do to reduce input lag.
Audio driver
OpenAL (default)
OpenAL (default)
The default driver, provided by libGDX. Works out of the box on Windows, Linux, and macOS without additional setup. OpenAL is a good choice for most players.When OpenAL is selected, the device name picker is disabled — OpenAL uses the system default audio device automatically.
PortAudio
PortAudio
An alternative low-level driver that exposes individual audio devices by name. Select PortAudio from the Audio Driver dropdown and then choose your output device from the Device Name list that appears. If no PortAudio devices are detected the launcher falls back to OpenAL automatically and logs an error.PortAudio can offer lower latency on some systems, particularly on Windows with ASIO or WASAPI exclusive-mode devices.
Buffer and latency
Device buffer size
Device buffer size
The number of audio frames the driver buffers before sending audio to your speakers. The default is 384 frames.
- Too high: audible delay between hitting a key and hearing the keysound, making accurate play difficult.
- Too low: audio underruns manifest as clicks, pops, or crackling noise.
Simultaneous sources
Simultaneous sources
The maximum number of sounds that can play at the same time. Default is 128. BMS charts can trigger many keysounds simultaneously during dense patterns — increasing this prevents sounds from being cut off during busy sections. Valid range: 16 – 1024.
Sample rate
Sample rate
Forces the audio device to use a specific sample rate. Options are 44100 Hz, 48000 Hz, or blank (let the system decide). Leave this blank unless you have a specific reason to override it, such as matching your hardware’s native rate to avoid resampling artifacts.
Volume controls
The Audio tab provides three independent volume sliders, each ranging from 0.0 to 1.0:| Slider | Controls |
|---|---|
| System volume | UI sounds, BGM in music select, and other non-chart audio |
| Key volume | Keysounds triggered by note hits during gameplay |
| BG volume | Background note sounds that play automatically regardless of player input |
When Normalize Volume is enabled, the key volume and BG volume sliders are disabled. Volume levels are managed automatically on a per-chart basis instead.
Volume normalization
Endless Dream 0.4.0 introduced automatic per-chart loudness normalization. When enabled, the game analyzes each chart’s audio and adjusts playback volume so that every chart plays at a consistent perceived loudness, regardless of how the original BMS files were mastered. To enable normalization, check the Normalize Volume box in the Audio tab of the launcher. The key volume and BG volume sliders will be grayed out while normalization is active — Endless Dream manages these levels automatically.Volume normalization is off by default. Enable it if you find yourself adjusting volume between charts or if particularly loud or quiet charts are disrupting your play experience.
Frequency and fast-forward options
Freq option (practice mode)
Freq option (practice mode)
Controls how audio is handled when the FREQ rate modifier is active in practice mode. Two modes are available:
- FREQUENCY (default): playback speed changes, and pitch changes proportionally (like playing a record faster or slower).
- UNPROCESSED: no pitch or speed adjustment is applied.
Fast forward
Fast forward
Controls audio behavior during the fast-forward feature. Same options as freq option: FREQUENCY or UNPROCESSED.
Result screen audio
Two checkboxes in the Audio tab control result screen behavior:- Loop result sound: loops the result screen BGM instead of playing it once.
- Loop course result sound: same setting, applied to the course result screen shown after completing a course.