diff options
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/editor/script.js | 13 | ||||
| -rw-r--r-- | tools/spectral_editor/script.js | 8 |
2 files changed, 8 insertions, 13 deletions
diff --git a/tools/editor/script.js b/tools/editor/script.js index ebc543a..06c9bef 100644 --- a/tools/editor/script.js +++ b/tools/editor/script.js @@ -632,17 +632,12 @@ async function playSpectrogramData(specData) { for (let frameIndex = 0; frameIndex < numFrames; frameIndex++) { const spectralFrame = specData.data.slice(frameIndex * dctSize, (frameIndex + 1) * dctSize); - // Apply window to spectrum before IDCT (matches C++ synth.cc) - const windowedSpectral = new Float32Array(dctSize); - for (let i = 0; i < dctSize; i++) { - windowedSpectral[i] = spectralFrame[i] * hanningWindowArray[i]; - } - - const timeDomainFrame = javascript_idct_512(windowedSpectral); + // IDCT (no windowing - window is only for analysis, not synthesis) + const timeDomainFrame = javascript_idct_512(spectralFrame); - // Direct output (no additional windowing) + // Apply Hanning window for smooth transitions between frames for (let i = 0; i < dctSize; i++) { - audioData[frameIndex * dctSize + i] = timeDomainFrame[i]; + audioData[frameIndex * dctSize + i] = timeDomainFrame[i] * hanningWindowArray[i]; } } diff --git a/tools/spectral_editor/script.js b/tools/spectral_editor/script.js index 677a823..6c6dd49 100644 --- a/tools/spectral_editor/script.js +++ b/tools/spectral_editor/script.js @@ -1543,20 +1543,20 @@ function spectrogramToAudio(spectrogram, dctSize, numFrames) { const window = hanningWindowArray; for (let frameIdx = 0; frameIdx < numFrames; frameIdx++) { - // Extract frame and apply window to spectrum (matches C++ synth.cc) + // Extract frame (no windowing - window is only for analysis, not synthesis) const frame = new Float32Array(dctSize); for (let b = 0; b < dctSize; b++) { - frame[b] = spectrogram[frameIdx * dctSize + b] * window[b]; + frame[b] = spectrogram[frameIdx * dctSize + b]; } // IDCT const timeFrame = javascript_idct_512(frame); - // Overlap-add (no additional windowing - window already applied to spectrum) + // Apply synthesis window for overlap-add const frameStart = frameIdx * hopSize; for (let i = 0; i < dctSize; i++) { if (frameStart + i < audioLength) { - audioData[frameStart + i] += timeFrame[i]; + audioData[frameStart + i] += timeFrame[i] * window[i]; } } } |