RealtimeServerEventInputAudioBufferCommitted
Returned when an input audio buffer is committed, either by the client or
automatically in server VAD mode. The item_id property is the ID of the user
message item that will be created, thus a conversation.item.created event
will also be sent to the client.
{
"event_id": "string",
"type": "input_audio_buffer.committed",
"previous_item_id": "string",
"item_id": "string"
}