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PUREPATHCONSOLE: Bass Shelf biquad calculator may not be working in PurePath

howy
Intellectual 460 points
Part Number: PUREPATHCONSOLE
Other Parts Discussed in Thread: TLV320ADC6140

It looks like the Bass Shelf is not updating the biquad coefficients (or the graph)  in PurePath 3 (TLV320adc6140).

Other filters types seem to work. 

Also how does the biquad filter calculator know what sample rate the system is running at if the ADC is in slave mode? I need to calculate the coefficients for a 32khz sample rate.

Thanks,

-howy

  • 0
    TI__Mastermind 23050 points

    Hey Howy,

    The bass and treble shelf filters do work, but the GUI unfortunately does not restrict the gain parameter as it should and gains greater than +/-6dB will result in the coefficients and graph not being updated. It should work if you keep the gain within these bounds.

    Best,

    Zak