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■ MIXER register

The digital mixer is a block that adjusts the level and balance of each audio signal in SCSP. The digital mixer consists of four parts: a direct audio adjuster, a DSP input adjuster, a DSP output adjuster , and a final output adjuster. Figure 4.53 shows a block diagram of the digital mixer and explains each block.

Figure 4.53 Digital mixer block diagram

  • Direct audio adjustment section
    ¡A mixer block that manages the path where each slot output directly connects to the DAC output. The output level ("DISDL") and output balance ("DIPAN") can be controlled for each slot.

  • DSP input stage adjuster
    ∙ Performs mixing to input the output of each slot to DSP ("MIXS"). Actually, select “MIXS” to input the audio signal with “ISEL” of each slot, and adjust the input level with “IMXL”. When mixing multiple sounds with "ISEL", it is necessary to balance each sound.
    "MIXS" can mix and input multiple slot outputs, so the same effect processing can be performed for multiple sounds like BGM reverb. Also, when applying effects with DSP, transfer the audio data to "MIXS".

  • DSP output stage adjuster
    ∙ Audio that has been applied with DSP effects and audio that has been captured by external digital input are finally combined into stereo through a mixing process. The output level ("EFSDL") and output balance ("EFPAN") can be adjusted for audio signals output from "EFREG" equivalent to DSP and "EXTS" that receives external digital audio input. I can do it. The data collected here is also mixed with the direct audio component.

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