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Fix divide by zero

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This commit is contained in:
Aaron Gutierrez
2026-02-01 11:16:41 -08:00
parent e976a1f52d
commit ccc23dcb7c
1 changed files with 7 additions and 1 deletions
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8
tuner.js
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@@ -127,6 +127,7 @@ const tune = (analyser, data) => () => {
if (maxBucket === -1) return; if (maxBucket === -1) return;
// Ignore weak signals (noise threshold) // Ignore weak signals (noise threshold)
if (max === 0) return;
let maxDb = 20 * Math.log10(max); let maxDb = 20 * Math.log10(max);
if (maxDb < NOISE_THRESHOLD) return; if (maxDb < NOISE_THRESHOLD) return;
@@ -138,12 +139,17 @@ const tune = (analyser, data) => () => {
let right = data[maxBucket + 1]; let right = data[maxBucket + 1];
delta = (0.5 * (right - left)) / (2 * center - left - right); delta = (0.5 * (right - left)) / (2 * center - left - right);
if (!Number.isFinite(delta)) delta = 0;
} }
let frequency = (maxBucket + delta) * bucketWidth; let frequency = (maxBucket + delta) * bucketWidth;
if (!Number.isFinite(frequency) || frequency <= 0) {
lastFrequency = null;
return;
}
// Apply exponential smoothing // Apply exponential smoothing
if (lastFrequency !== null) { if (lastFrequency !== null && Number.isFinite(lastFrequency)) {
frequency = frequency =
SMOOTHING_FACTOR * lastFrequency + (1 - SMOOTHING_FACTOR) * frequency; SMOOTHING_FACTOR * lastFrequency + (1 - SMOOTHING_FACTOR) * frequency;
} }