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

3.3 Volume

Figure 3-6 shows the default volume in PPC3 GUI. Note that volume needs to be specified in decibels (dB). Independent volume change for left and right channel can be achieved by deselecting the “Gang” option.

VolumeFigure 3-6 Volume

The volume block is implemented using an alpha filter structure. As Figure 3-7 shows, when a volume level change is initiated, the volume block provides a smooth transition to the newly commanded volume level without producing artifacts such as pops and clicks.

Volume Attack and ReleaseFigure 3-7 Volume Attack and Release