{
  "id": 17922882,
  "title": "A Fade-Out Is Not Yet a Crossfade: Test the Timeline Before Shipping Audio",
  "url": "https://urgent.news/2026/11/03/a-fade-out-is-not-yet-a-crossfade-test-the-timeline-before-shipping",
  "topic": "tech",
  "section": "Tech",
  "published": "2026-11-03T06:42:56.000Z",
  "source": {
    "name": "Dev.to",
    "slug": "dev-to",
    "url": "https://dev.to/creatunealex/a-fade-out-is-not-yet-a-crossfade-test-the-timeline-before-shipping-audio-1ge3"
  },
  "original_language": "en",
  "account": "Alex from the Creatune team conducted an experiment on November 1, 2026, to distinguish between a fade-out and a crossfade when joining audio clips. The test involved creating two synthetic WAV files using Python's standard library, with different tones at 440 Hz and 880 Hz, lasting two seconds each. The files were then joined using Creative's Audio Joiner software.\n\nIn the first test, only a fade-out was applied to the first clip. The second clip remained unchanged, with no fade-in enabled. Despite the fade-out, the total duration remained four seconds. This confirmed that a fade-out alone does not shift the start time of the following clip.\n\nIn the second test, both a fade-out and fade-in were applied to the respective clips, each set to one second. This resulted in a crossfade with a total duration of three seconds. The overlap between the two clips was one second, which was subtracted from the combined lengths of the individual clips to determine the final output duration. The crossfade was labeled as \"Crossfade · 1.0 s.\"\n\nBy comparing the measured output durations, the experiment demonstrated that a fade-out alone does not adjust the starting time of the subsequent clip, while a crossfade with matching durations does. This distinction is crucial when precise timing is required, such as aligning a second spoken cue with a specific point in the audio.",
  "summary": "You soften the end of the first clip, export a join, and expect the second clip to start earlier. It may not. A fade changes amplitude over time; a crossfade also overlaps neighboring clips. Those are separate decisions when the output must stay aligned with a video cue. I'm Alex from the Creatune team. I tested this distinction in our public Audio Joiner with two synthetic WAV files on November…",
  "key_points": [
    "Alex conducted experiment on November 1, 2026, to test fade-out vs crossfade",
    "Fade-out alone does not shift start time of following clip",
    "Crossfade with matching durations adjusts combined audio duration"
  ],
  "editors_take": null,
  "illustration": null,
  "coverage": {
    "outlets": 1,
    "also_reported_by": []
  },
  "ai_generated": true,
  "disclaimer": "Summaries, key points and the editor’s take are written by software from other outlets’ reporting and may contain errors — always check the linked original."
}