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AN4229

How to use the demonstration

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3.3.3

Recorder menu

In the recorder menu (Figure 13) there are three possible actions: record, stop and play.

On DISCOVERY board, here are the correspondences between LEDs indications and

selected actions:

•

Orange LED is on: RECORD action selected

•

Red LED is on: STOP action selected

•

Blue LED is on: PLAY action selected

•

Green LED is always blinking

On EVAL board, the following items are displayed (Figure 13):

•

actions menu

•

recording codec name (selected from previous menu)

•

recording parameters

•

recorder status.

Figure 13. Recorder description

3.4

Simple examples

Simple examples are provided only on EVAL boards. Encoding/decoding is performed

on/from internal flash memory so no external media storage is needed.

There are four simple examples (one for each codec):

•

Simple_G711

•

Simple_G726

•

Simple_IMA-ADPCM

•

Simple_Speex

The display is minimalist and there is no menu selection. The control is done by key and

tamper push button to respectively record/stop and play/stop.