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TAS5754M: TAS5754 DRC ISSUE

Ray Hsu
Expert 1330 points
Part Number: TAS5754M

1. TAS5754压缩器，如果分三段压缩的话，假定使用1K测试可以压缩到30W，但使用100HZ测试则会超出30W，看工具三段DRC都是使用相同压缩门框，但压缩的功率就不相同。

如果不使用3段DRC，只使用一段DRC就可以。但为什么3段DRC就不可以呢？                                                           

2. 使用TAS5754发现一个问题，把所有EQ都ALL PASS，PBE关闭，DBE关闭，但实际测试125HZ以下的频率会被衰减，而不是一条平直的EQ频响曲线。 

烦请帮忙沟通一下疑惑 

  • 0
    TI__Genius 9995 points

    Hello Ray，

    As to your question 1: 3-band DRC:

    If the threshold is the same for both 3-band, audio signal will be suppressed to the same level. But here we also need to think:

    1. Time constant settings: energy time , attack time and decay time. Please decrease energy time and attack time for low band to see whether it works or not.
    2. What the crossover for low band and middle band? Is 100Hz near to the crossover. Please adjust it if so.

    As to the second question, please bypass all DSP related setting and make sure AP is configured right. On my side, let me do some test before replying to you. 

    Regards,

    Alix Wan.