From 6b4007131385e9b4d76d24a5a26062271b0f74d7 Mon Sep 17 00:00:00 2001 From: Holger Wirtz Date: Tue, 11 Jun 2019 14:20:01 +0200 Subject: [PATCH] Optimizations. --- effect_modulated_delay.cpp | 20 ++++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/effect_modulated_delay.cpp b/effect_modulated_delay.cpp index 9e74d5f..42fec14 100644 --- a/effect_modulated_delay.cpp +++ b/effect_modulated_delay.cpp @@ -102,7 +102,7 @@ void AudioEffectModulatedDelay::update(void) // Generate a an array with the size of INTERPOLATION_WINDOW_SIZE of x/y values around mod_idx for interpolation uint8_t c = 0; int16_t c_mod_idx = _circ_idx - int(mod_idx + 0.5); // This is the pointer to the value in the circular buffer at the current modulation index - for (j = INTERPOLATION_WINDOW_SIZE / -2; j <= INTERPOLATION_WINDOW_SIZE / 2; j++) + for (j = ~(INTERPOLATION_WINDOW_SIZE >> 1) | 0x01; j <= INTERPOLATION_WINDOW_SIZE >> 1; j++) // only another way to say: from -INTERPOLATION_WINDOW_SIZE/2 to INTERPOLATION_WINDOW_SIZE/2 { int16_t jc_mod_idx = (c_mod_idx + j) % _delay_length; // The modulation index pointer plus the value of the current window pointer if (jc_mod_idx < 0) @@ -120,15 +120,15 @@ void AudioEffectModulatedDelay::update(void) *bp = _delayline[_delay_length + c_mod_idx]; else *bp = _delayline[c_mod_idx]; -/* Serial.print("mod_idx="); - Serial.print(mod_idx, 3); - Serial.print(" c_mod_idx="); - Serial.print(c_mod_idx, DEC); - Serial.print(" MODULATION="); - Serial.print(*mp, DEC); - Serial.print(" DATA="); - Serial.print(*bp, DEC); - Serial.println();*/ + /* Serial.print("mod_idx="); + Serial.print(mod_idx, 3); + Serial.print(" c_mod_idx="); + Serial.print(c_mod_idx, DEC); + Serial.print(" MODULATION="); + Serial.print(*mp, DEC); + Serial.print(" DATA="); + Serial.print(*bp, DEC); + Serial.println();*/ #endif bp++; // next audio data