SLUUDB4 June   2025 TAS5830

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1General Overview
    1. 1.1 Supported Use Cases
  5. 2Process Flows
    1. 2.1  Overview
    2. 2.2  Process Flow 1
      1. 2.2.1  SRC
      2. 2.2.2  Input Mixer
      3. 2.2.3  Equalizer
      4. 2.2.4  Volume
      5. 2.2.5  DPEQ
      6. 2.2.6  3-Band DRC
      7. 2.2.7  AGL
      8. 2.2.8  Clipper
      9. 2.2.9  Output Crossbar
      10. 2.2.10 DSP Memory Map
    3. 2.3  Process Flow 2
      1. 2.3.1 SRC
      2. 2.3.2 Input Mixer
      3. 2.3.3 Equalizer
      4. 2.3.4 Volume
      5. 2.3.5 2-Band DRC
      6. 2.3.6 AGL
      7. 2.3.7 Clipper
      8. 2.3.8 Output Crossbar
      9. 2.3.9 DSP Memory Map
    4. 2.4  Process Flow 3
      1. 2.4.1 SRC
      2. 2.4.2 Input Mixer
      3. 2.4.3 Equalizer
      4. 2.4.4 Volume
      5. 2.4.5 2-Band DRC
      6. 2.4.6 AGL
      7. 2.4.7 Clipper
      8. 2.4.8 Output Crossbar
      9. 2.4.9 DSP Memory Map
    5. 2.5  Process Flow 4
      1. 2.5.1 SRC
      2. 2.5.2 Volume
      3. 2.5.3 DSP Memory Map
    6. 2.6  Process Flow 5
      1. 2.6.1  SRC
      2. 2.6.2  Input Mixer
      3. 2.6.3  Equalizer
      4. 2.6.4  Volume
      5. 2.6.5  DPEQ
      6. 2.6.6  3-Band DRC
      7. 2.6.7  AGL
      8. 2.6.8  Clipper
      9. 2.6.9  Output Crossbar
      10. 2.6.10 DSP Memory Map
    7. 2.7  Process Flow 6
      1. 2.7.1 SRC
      2. 2.7.2 Input Mixer
      3. 2.7.3 Equalizer
      4. 2.7.4 Volume
      5. 2.7.5 2-Band DRC
      6. 2.7.6 AGL
      7. 2.7.7 Clipper
      8. 2.7.8 Output Crossbar
      9. 2.7.9 DSP Memory Map
    8. 2.8  Process Flow 7
      1. 2.8.1 SRC
      2. 2.8.2 Input Mixer
      3. 2.8.3 Equalizer
      4. 2.8.4 Volume
      5. 2.8.5 2-Band DRC
      6. 2.8.6 AGL
      7. 2.8.7 Clipper
      8. 2.8.8 Output Crossbar
      9. 2.8.9 DSP Memory Map
    9. 2.9  Process Flow 8
      1. 2.9.1 SRC
      2. 2.9.2 Volume
      3. 2.9.3 DSP Memory Map
    10. 2.10 Process Flow 9
      1. 2.10.1 SRC
      2. 2.10.2 Input Mixer
      3. 2.10.3 Equalizer
      4. 2.10.4 Volume
      5. 2.10.5 2-Band DRC
      6. 2.10.6 1-Band DRC
      7. 2.10.7 Output Crossbar
      8. 2.10.8 DSP Memory Map
  6. 3Audio Processing Blocks
    1. 3.1 Input Mixer
    2. 3.2 Equalizer
    3. 3.3 Volume
    4. 3.4 DPEQ
      1. 3.4.1 DPEQ
      2. 3.4.2 Energy Sense
      3. 3.4.3 Low Level EQ
      4. 3.4.4 High Level EQ
    5. 3.5 3-Band DRC
      1. 3.5.1 DRC Time Constant
      2. 3.5.2 Crossover
    6. 3.6 2-Band DRC
      1. 3.6.1 DRC Time Constant
      2. 3.6.2 Crossover
    7. 3.7 AGL
    8. 3.8 Clipper
    9. 3.9 Output Crossbar
  7.   A Appendix
    1.     A.1 DSP Memory Map for Process Flows 1 and 5
    2.     A.2 DSP Memory Map for Process Flow 2, 3, 6 and 7
    3.     A.3 DSP Memory Map for Process Flow 4 and 8
    4.     A.4 DSP Memory Map for Process 9

3.6.2 Crossover

By default, the two-band crossover frequencies are set to 1000Hz, using second-order Butterworth filters. This filter type is chosen because the total sum of the two-band signals has a flat response without having to calculate individual crossover frequencies for unity summation. The crossover frequencies need to be separated far enough in the frequency range from each other to avoid any dip caused by the filter sum response.