> ## Documentation Index
> Fetch the complete documentation index at: https://docs.duix.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Precautions

> Important considerations for using the Duix Android SDK, including microphone permissions and audio format requirements.

## Overview

Before running the **Duix Android SDK**, please review the following important notes.\
Failure to meet these requirements may cause initialization or audio transmission failures.

***

1. Microphone Permission

   The **RTC (Real-Time Communication)** module requires access to the device’s microphone.\
   You must request and obtain this permission **dynamically at runtime** before initializing or using any real-time interaction feature.

2. Audio Format
   When providing audio input, use **WAV files** with the following specifications:
   * **Sample rate:** 16,000 Hz
   * **Channel:** Mono
   * **Bit depth:** 16-bit