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전자부품 데이터시트 검색엔진 |
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전자부품 데이터시트 검색엔진 |
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TDA7419 데이터시트(PDF) 18 Page - STMicroelectronics |
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TDA7419 데이터시트(HTML) 18 Page - STMicroelectronics |
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18 / 40 page  Description of the audio processor TDA7419 18/40 4.4.3 Low and high frequency boost Figure 6 shows the different loudness shapes in low and high frequency boost. Figure 6. Loudness attenuation, fC = 2.4 kHz 4.4.4 Flat mode In flat mode the loudness stage works as a 0 dB to -15 dB attenuator. 4.5 Soft-mute The digitally controlled soft-mute stage allows muting/demuting the signal with a I2C bus programmable slope. The mute process can either be activated by the soft-mute pin or by the I2C bus. This slope is realized in a special S-shaped curve to mute slow in the critical regions (see Figure 7). For timing purposes the bit 0 of the I2C bus output register is set to 1 from the start of muting until the end of demuting. -2 0 -1 5 -1 0 -5 0 5 10 10 0 1K 10K |
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