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TA2160FNG データシート(PDF) 8 Page - Toshiba Semiconductor |
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TA2160FNG データシート(HTML) 8 Page - Toshiba Semiconductor |
8 / 17 page TA2160FNG 2004-05-11 8 The transfer function of bass boost is as follows from Figure 3. G (ω) = G1 (ω)·A1·G2 (ω)·G3 (ω)·A2 The bass boost effect is changed by external resistor or external capacitor. The transfer function and cutoff frequency are as follows. i Transfer function of LPF G1 (ω) = 1/(1 + jωC1·R1) fL = 1/2πC1·R1 ii Transfer function of BPF G3 (ω) = jωC4·R5/[1 + jω (R4·C3 + R5·C3 + C4·R4) − ω2R4·C3·R5·C4] C4 R5 C3 R4 1/2 fO ⋅ ⋅ ⋅ = π iii HPF gain and ct of frequency G2 (ω) = 1 + R2/(R3 + 1/jωC2) fHC = 1/(2πR3·C2) C4 18 PWA PWC 19 21 22 R4 = 22 kΩ BST 23 R2 = 100 kΩ ATT 24 2R1 22 k Ω 2R1 22 k Ω 8 11 G1 (ω) LPF G2 (ω) HPF A1 G3 (ω) BPF A2 Figure 3 Block Diagram of Bass Boost Frequency f (Hz) 3 10 100 400 BPF −20 −10 0 10 20 −30 30 LPF HPF Total characteristic fO fL A Ra Ca Cb Rb Figure 4 BPF Graph 1 Characteristic of Bass Boost |
同様の部品番号 - TA2160FNG |
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同様の説明 - TA2160FNG |
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