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ADAU1373BCBZ-R7 Datasheet(PDF) 66 Page - Analog Devices |
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ADAU1373BCBZ-R7 Datasheet(HTML) 66 Page - Analog Devices |
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66 / 296 page  ADAU1373 Rev. 0 | Page 66 of 296 3D ENHANCEMENT The 3D enhancement block can be used to widen the stereo separation between the left and right signals. Table 29 and Table 30 show the two 3D enhancement registers, E3D_CTRL1 and E3D_CTRL2 (Address 0xC0 and Address 0xC1, respectively). These registers provide control to enhance the depth and level of the signal. The low-pass filter cutoff frequency determines the frequency at which the effect begins to occur. The 3D enhancement increases the gain of the signal, which can be controlled by the E3D_GAIN bits (Register 0xC1, Bits[3:1]). In addition, the depth of the 3D effect can be adjusted using the E3D_ALPHA bits (Register 0xC0, Bits[3:0]). The depth must be set to the desired effect based on the signal and setup. Table 29. Bit Descriptions for Register 0xC0, E3D Enhancement Control 1 (E3D_CTRL1) Bits Bit Name Settings Description Reset Access [7:4] E3D_LEVEL 3D enhancement level control 0x0 RW 0000 0%, no 3D effect 0001 6.67% 0010 13.33% 0011 20% 0100 26.67% 0101 33.33% 0110 40% 0111 46.67% 1000 53.33% 1001 60% 1010 66.67% 1011 73.33% 1100 80% 1101 86.67% 1110 93.33% 1111 100% [3:0] E3D_ALPHA 3D separate filter cutoff frequency 0x0 RW 0000 No 3D effect 0001 1.5 kHz at 48 kHz sampling rate 0010 2.2 kHz at 48 kHz sampling rate 0011 3.6 kHz at 48 kHz sampling rate 0100 5.5 kHz at 48 kHz sampling rate 0101 8.1 kHz at 48 kHz sampling rate 0110 13 kHz at 48 kHz sampling rate Table 30. Bit Descriptions for E3D Enhancement Control 2, Register 0xC1 (E3D_CTRL2) Bits Bit Name Settings Description Reset Access [3:1] E3D_GAIN 3D enhancement gain setting 0x0 RW 000 E3D gain: 1 001 E3D gain: 0.125 010 E3D gain: 0.25 011 E3D gain: 0.375 100 E3D gain: 0.5 101 E3D gain: 0.625 110 E3D gain: 0.75 111 E3D gain: 0.875 0 E3D_EN 3D enhancement enable control 0x0 RW 0 Enhancement disable 1 Enhancement enable |
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