Gamelan Slendro/Pelog Tuner

Gamelan Slendro/Pelog Tuning Explorer

IMPORTANT DISCLAIMER: This tool is an **educational demonstrator**, not a precise tuner for physical Gamelan instruments. Gamelan tuning (Slendro and Pelog) is highly **relative and non-standardized**, varying significantly between regions, ensembles, and even individual instruments.

The frequencies provided are **approximations** based on common theoretical representations and research for a specific reference pitch. They will **not** perfectly match any actual Gamelan set, which are tuned by ear to sound right *together* and often feature intentional acoustic "beating" for their unique sound.

Use this tool to explore the *characteristics* and *intervals* of these fascinating tuning systems.

Select Tuning System & Reference Pitch

Select Gamelan Tuning System (Laras):

Reference Pitch (Hz) for first note (e.g., 261.63 for C4, 440 for A4):

Calculated Frequencies & Playback

Select a tuning system and enter a reference pitch above to see the calculated frequencies and play the notes.

'; inputError.textContent = ''; downloadPdfBtn.disabled = true; downloadPdfBtn.style.opacity = '0.6'; lastCalculatedFrequencies = null; }); referencePitchInput.addEventListener('input', () => { resultSection.innerHTML = '

Select a tuning system and enter a reference pitch above to see the calculated frequencies and play the notes.

'; inputError.textContent = ''; downloadPdfBtn.disabled = true; downloadPdfBtn.style.opacity = '0.6'; lastCalculatedFrequencies = null; }); downloadPdfBtn.addEventListener('click', downloadPdfReport); // Initial state resultSection.innerHTML = '

Select a tuning system and enter a reference pitch above to see the calculated frequencies and play the notes.

'; downloadPdfBtn.disabled = true; downloadPdfBtn.style.opacity = '0.6';