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"How can I record audio using a microcontroller and send it to a specific destination?"

I2S (Inter-IC Sound) is a communication protocol used for transmitting or receiving audio data between two devices.

I2S is commonly used in digital devices for audio communication, such as adding a microphone or speaker output to play audio.

The ESP32 microcontroller has an I2S peripheral interface, allowing it to transmit and receive audio data.

An I2S microphone can be connected to a microcontroller with an I2S peripheral interface to capture audio data.

The recorded audio data can be stored on an SD card in WAV file format for later use.

For computer audio, using I2S and an I2S microphone is recommended, as it allows for easy reading and capturing of audio data.

Alternatively, software like EaseUS RecExperts can be used to record audio from a computer system and microphone.

An Arduino-based voice recorder can be built using a small microphone to record voice and store it onto an SD card.

Sampling audio with an ESP32 microcontroller can be done using direct readout, interrupt-driven readout, or I2S-driven readout methods.

An audio codec can be used to generate audio from an MP3 file on a microcontroller by decoding the MP3 file and then streaming the decoded file to the audio codec.

The ESP32 microcontroller can be used for audio sound generation, including producing a brief beep sound, generating a robust sound, creating a warning sound, and enabling the microcontroller to play prerecorded sounds.

The STM32F4DISCOVERY board can be used for audio wave playback and recording, with the audio data wave read from the internal flash memory or an external USB key.

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