Datasheet

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VS1053B OGG VORBIS ENCODER VSMPG
Figure 3: Real record display with monochrome VU meter.
Figure 3 shows a real implementation of a recording display that uses a Monochrome
VU Meter. Information shown on the top line includes recording time, free disc space,
overload warning and a bitrate counter. All this data except from the free disc space
number have been obtained from the VS1053b Ogg Vorbis Encoder.
Recording gain and AGC can be set at the center of the screen if a profile is used that
support these functions. However, they are greyed out in this picture because they are
not available in the Stereo Music profile that has been used.
The VU Meter is at the bottom. The solid line is the current recording level as read
from SCI_AICTRL0 and converted to Decibel scale as shown in Chapter 2.4.4. The
greyed line is the top level of the last 3 seconds. If the greyed line ≥ +5 dB, the orange
OVERLOAD message blinks twice a second for three seconds.
Rev. 1.70c 2012-11-16
Page 15(39)