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Add peak hold decay rate selector

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Introduce a new dropdown to control how fast the peak-hold line
decays on the live spectrum. Options:
  Off   — peaks never decay (manual reset only)
  Slow  — slow fade (0.005/frame)
  Medium — moderate fade (0.015/frame, matches previous fixed rate)
  Fast   — quick fade (0.03/frame)

Previously the decay rate was hardcoded at 0.015/frame.
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Armin 2026-07-06 18:09:41 +02:00
commit e159b76e0d
2 changed files with 9 additions and 1 deletions
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6
index.html
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@ -32,6 +32,12 @@
<button id="resetBtn" class="player-btn" title="Reset Peaks">↺</button>
<span id="playTime" class="player-time">0:00.0 / 0:00.0</span>
<select id="windowSelect" class="window-select" title="Spectrum window function"><option value="none">None</option><option value="hanning" selected>Hanning</option><option value="hamming">Hamming</option><option value="blackman">Blackman-Harris</option><option value="bartlett">Bartlett</option><option value="gaussian">Gaussian</option><option value="kaiser">Kaiser</option><option value="flatTop">Flat Top</option></select>
<select id="peakHoldDecay" class="window-select" title="Peak hold decay rate">
<option value="off">Hold: Off</option>
<option value="slow">Hold: Slow</option>
<option value="medium" selected>Hold: Medium</option>
<option value="fast">Hold: Fast</option>
</select>
</div>
<div class="chart-container" style="position:relative">
<canvas id="waveformChart"></canvas>