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PCM3070: Set PCM3070 High and low bass cutoff frequency

Havid huang
Prodigy 170 points
Part Number: PCM3070

Hi, I use PCM3070RHBEVM-K DEMO and download the software.Now,

I use the PCM3070  to make 2.1 speakers and   line out  as the Treble output ， and the  headphone  as  the Bass output

 But  I don't know how to set  high and low  bass cutoff frequency

can  you  give me some advice  thank you!!

  • 0
    TI__Guru 57800 points

    Hi, Havid,

    There are a couple ways to configure the filters for your output signals, it depends on the processing block used in your application and output routing. 

    About the filtering, if you are using one of the DAC processing blocks, you shall be able to tune the filters by writing the coefficients of the available biquads manually as indicated in section 2.4.2.2 of the PCM3070 Application Reference guide. We have a tool that can be used to calculate the coefficients for Biquad Filters, you can download it from http://www.ti.com/tool/COEFFICIENT-CALC. If you are using the miniDSP, then you can create and configure the filters using PurePath Studio software. 

    Can you please share a diagram with the output routing you are using so we can recommend you the best way to configure the crossover filters?.

    Thanks and Best Regards,

      -Diego Meléndez López
       Audio Applications Engineer