From 960adde7e467d2a0c0ee541ed4ee2ec2219221e4 Mon Sep 17 00:00:00 2001
From: Dominik Kaiser
Date: Sun, 28 Sep 2025 13:58:50 +0200
Subject: Tune filters and get reverb to work

---
 src/DSP/AllPassFilter.cpp | 16 +++++++++++-----
 1 file changed, 11 insertions(+), 5 deletions(-)

(limited to 'src/DSP/AllPassFilter.cpp')

diff --git a/src/DSP/AllPassFilter.cpp b/src/DSP/AllPassFilter.cpp
index e90bff7..a6e3908 100644
--- a/src/DSP/AllPassFilter.cpp
+++ b/src/DSP/AllPassFilter.cpp
@@ -1,24 +1,30 @@
 #include "AllPassFilter.h"
 
-void AllPassFilter::prepare(double sampleRate, int samplesPerBlock) {
+void AllPassFilter::prepare(double sampleRate, int samplesPerBlock, int delayInSamples, float gain) {
   int maxDelayTimeMs = 100;
   int maxDelaySamples = static_cast<int>(sampleRate * maxDelayTimeMs / 1000.0);
 
   delayBuffer.resize(maxDelaySamples, 0.0f);
-  delayInSamples = static_cast<int>(sampleRate * 0.02);
+  //delayInSamples = static_cast<int>(sampleRate * delayInSeconds);
   delayBufferWritePos = 0;
+  this->delayInSamples_ = delayInSamples;
+  this->gain = gain;
 }
 
 void AllPassFilter::process(float* sample) {
   int delayBufferLength = (int)delayBuffer.size();
   int delayReadPos =
-      (delayBufferWritePos - delayInSamples + delayBufferLength) %
+      (delayBufferWritePos - delayInSamples_ + delayBufferLength) %
       delayBufferLength;
-  float xn = *sample;
+
+
   float delayedSample = delayBuffer[delayReadPos];
+  float xn = *sample;
+
+  float bufferInput = xn + gain * delayedSample;
   float yn = -gain * xn + delayedSample;  
 
-  delayBuffer[delayBufferWritePos] = xn + gain * yn;
+  delayBuffer[delayBufferWritePos] = bufferInput;
   *sample = yn;
   delayBufferWritePos = (delayBufferWritePos + 1) % delayBufferLength;
 }
-- 
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