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TAS3001CPWR Datasheet(PDF) 10 Page - Texas Instruments |
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TAS3001CPWR Datasheet(HTML) 10 Page - Texas Instruments |
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10 / 56 page  1−4 1.7 High-Precision, Second-Order Biquad Filter Structure The TAS3001 has six cascaded biquad filters for the left and right channels to permit parametric equalization and filtering of the input signal. Each biquad is able to specify a wide variety of first- and second-order filter types, including high-pass, low-pass, band-pass, band-block, notch, and all-pass filter types. Examples of a few of the filters that can be implemented by the TAS3001 shapes are illustrated in Figure 1−2 though Figure 1−6. −20 −15 −10 −5 0 5 10 f − Frequency − Hz ATTENUATION vs FREQUENCY 100 1k 10k Figure 1−2. Examples of High-Pass Filters Figure 1−3. Examples of Equalization Filters −15 −10 −5 0 5 10 15 f − Frequency − Hz ATTENUATION vs FREQUENCY 100 1k 10k The biquad structure is of the form: H(z) + b 0 ) b 1 Z–1 ) b 2 Z–2 1 ) a 1 Z–1 ) a 2 Z–2 Coefficients are downloaded to the TAS3001 registers in 4.20 format. |
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