AMB82-mini audio auto-recording

Arduino Multimedia
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1

Hi, I am working on a AI-toy reference design which requires audio auto-recording for listening and recording user’s speech (.mp4 will be sent to MLLM)

In Arduino, Examples>AmebaMultimedia > Audio > AudioTriggerRecording

int currentVol = audio.micLevel();

if (currentVol > TRIGGER_VOL) { currentState = STATE_RECORDING; }

the example use audio.micLevel() > 7000 to detect the trigger,

is it possible to do auto recording starting from audio.micLevel()>7000 to audio.micLevel()< 1000

instead of setting recording duration of 3 ~ 5 seconds ?

what is the longest recording period ? maybe set LED flashing at the end of recording.

Your help will be very appreciated !

2

Hi @rkuo2000 ,

Thank you for your question and for sharing your use case.

The AudioTriggerRecording example is intended as a basic reference, so some customization may be needed for your application. In the meantime, we recommend taking a look at the Audio API and the AudioTriggerRecording example to become familiar with the available interfaces.

I will also look into your question and update you if I have any findings.

Thanks!

3

Hi @rkuo2000 ,

You may check out the provided audio_trigger_recording_miclevel_based example code to see if it fits your needs. The recording duration limit depends on the SD that you are using, for a FAT32 formatted SD card, a single recording file can’t exceed 4 GB, which is roughly equivalent to 550 hours.

Thank you.

audio_trigger_recording_miclevel_based.zip (2.1 KB)

4

OK, I will ask AI to study those related codes :slight_smile: