Texas Instruments TLV320DAC26EVM, Руководство пользователя

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Program Description
3-13 Operation
selected as input. Its volume can be adjusted by the analog volume control
slider, ranging from 12 dB to −34.5 dB in 0.5-dB steps. The analog sidetone
is muted when the Mute box under the slider is checked. Additionally, the
analog sidetone volume change can be in soft−stepping mode if the
corresponding box is checked.
The DAC26 digital sidetone has three settings. The volume is controlled by the
digital slider, which changes from 0 dB to −48 dB in steps of 1.5 dB. The digital
sidetone can be muted by checking the mute box under the volume control
slider. The gain change is implemented with zero crossover, when enabled by
checking the box below the sliders, and a possible pop sound may be avoided
or reduced.
3.5.2.5 Keyclick Section
When the Enable Key Click box is checked, a clicking sound is heard
whenever a setting on the DAC configuration and DAC output filter tabs is
changed.
The volume, frequency, and duration (length) of this keyclick can be adjusted
using the corresponding slider and selectors shown in Figure 3−3.
3.5.3 DAC Output Filters Screen
The Audio Effects Filters screen displays all of the coefficients for the audio
effects filters of the DAC26, including the bass-boost and other filters, the
de-emphasis filters and the power-up pop noise reduction functions. This
screen is shown in Figure 3−4.