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Change default params, optional windowing fft

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This commit is contained in:
Ralty
2025-08-03 01:16:40 +07:00
parent ee2804a9d4
commit ae9b8a7b92
1 changed files with 20 additions and 14 deletions
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source/funkin/backend/utils/AudioAnalyzer.hx
+20 -14
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@@ -44,14 +44,14 @@ final class AudioAnalyzer {
* @param sampleRate Sample Rate input.
* @param barCount How much bars to get.
* @param levels The output for getting the values, to avoid memory leaks (Optional).
* @param ratio How much ratio for smoothen the values from the previous levels values (Optional, use CoolUtil.getFPSRatio(1 - smoothingTimeConstant) to simulate web AnalyserNode.smoothingTimeConstant).
* @param minDb The minimum decibels to cap (Optional, default -70.0, -120 is pure silence).
* @param maxDb The maximum decibels to cap (Optional, default -10.0).
* @param minFreq The minimum frequency to cap (Optional, default 20.0, Below 20.0 is not Recommended).
* @param maxFreq The maximum frequency to cap (Optional, default 22000.0, Above 22000.0 is not Recommended).
* @param ratio How much ratio for smoothen the values from the previous levels values (Optional, use CoolUtil.getFPSRatio(1 - ratio) to simulate web AnalyserNode.smoothingTimeConstant, 0.35 of smoothingTime works most of the time).
* @param minDb The minimum decibels to cap (Optional, default -63.0, -120 is pure silence).
* @param maxDb The maximum decibels to cap (Optional, default -10.0, Above 0 is not recommended).
* @param minFreq The minimum frequency to cap (Optional, default 20.0, Below 8.0 is not recommended).
* @param maxFreq The maximum frequency to cap (Optional, default 22000.0, Above 23000.0 is not recommended).
* @return Output of levels/bars that ranges from 0 to 1
*/
public static function getLevelsFromFrequencies(frequencies:Array<Float>, sampleRate:Int, barCount:Int, ?levels:Array<Float>, ratio = 0.0, minDb = -70.0, maxDb = -10.0, minFreq = 20.0, maxFreq = 22000.0):Array<Float> {
public static function getLevelsFromFrequencies(frequencies:Array<Float>, sampleRate:Int, barCount:Int, ?levels:Array<Float>, ratio = 0.0, minDb = -63.0, maxDb = -10.0, minFreq = 20.0, maxFreq = 22000.0):Array<Float> {
if (levels == null) levels = [];
levels.resize(barCount);
@@ -99,6 +99,12 @@ final class AudioAnalyzer {
*/
public var fftN(default, set):Int;
/**
* Should fft related stuff use blackman windowing? (Web AnalyzerNode windowing).
* Most of the time looks bad with this.
*/
public var useWindowingFFT:Bool = false;
/**
* The current buffer from sound.
*/
@@ -151,7 +157,7 @@ final class AudioAnalyzer {
/**
* Creates an analyzer for specified FlxSound
* @param sound An FlxSound to analyze.
* @param fftN How much samples for fft to get (Optional, default 2048).
* @param fftN How much samples for fft to get (Optional, default 2048, 4096 is recommended for highest quality).
*/
public function new(sound:FlxSound, fftN = 2048) {
this.sound = sound;
@@ -219,12 +225,12 @@ final class AudioAnalyzer {
* @param startPos Start Position to get from sound in milliseconds.
* @param barCount How much bars to get.
* @param levels The output for getting the values, to avoid memory leaks (Optional).
* @param ratio How much ratio for smoothen the values from the previous levels values (Optional, use CoolUtil.getFPSRatio(1 - smoothingTimeConstant) to simulate web AnalyserNode.smoothingTimeConstant).
* @param minDb The minimum decibels to cap (Optional, default -70.0).
* @param maxDb The maximum decibels to cap (Optional, default -10.0).
* @param minFreq The minimum frequency to cap (Optional, default 20.0).
* @param maxFreq The maximum frequency to cap (Optional, default 22000.0).
* @return Output of levels/bars
* @param ratio How much ratio for smoothen the values from the previous levels values (Optional, use CoolUtil.getFPSRatio(1 - ratio) to simulate web AnalyserNode.smoothingTimeConstant, 0.35 of smoothingTime works most of the time).
* @param minDb The minimum decibels to cap (Optional, default -63.0, -120 is pure silence).
* @param maxDb The maximum decibels to cap (Optional, default -10.0, Above 0 is not recommended).
* @param minFreq The minimum frequency to cap (Optional, default 20.0, Below 8.0 is not recommended).
* @param maxFreq The maximum frequency to cap (Optional, default 22000.0, Above 23000.0 is not recommended).
* @return Output of levels/bars that ranges from 0 to 1
*/
public function getLevels(startPos:Float, barCount:Int, ?levels:Array<Float>, ?ratio:Float, ?minDb:Float, ?maxDb:Float, ?minFreq:Float, ?maxFreq:Float):Array<Float>
return inline getLevelsFromFrequencies(__frequencies = getFrequencies(startPos, __frequencies), buffer.sampleRate, barCount, levels, ratio, minDb, maxDb, minFreq, maxFreq);
@@ -244,7 +250,7 @@ final class AudioAnalyzer {
var i = fftN;
while (i > 0) {
i--;
__freqReals[__reverseIndices[i]] = __freqSamples[i] * __windows[i];
__freqReals[__reverseIndices[i]] = __freqSamples[i] * (useWindowingFFT ? __windows[i] : 1);
__freqImags[i] = 0;
}