Converting Audio Files for Queclink IoT

Queclink (NB-Y) IoT modules can play custom audio. Before installing an audio file, it must meet specific technical requirements. This guide explains how to convert an audio file to the correct format using Audacity.

Required Audio Format

The file must meet ALL of the following requirements:

• Format: WAV
• Channel: Mono (1 channel)
• Bit rate: 8 kHz
• Sampling: 16 bit
• File size: Less than 160 KB

Step-by-Step Conversion with Audacity

Step 1: Download and install Audacity from https://www.audacityteam.org/

Step 2: Open Audacity and import your audio file (File > Import > Audio)

Step 3: If the audio is stereo (2 channels), convert to mono:

• Go to Tracks > Mix > Mix Stereo Down to Mono

Step 4: Change the sample rate to 8000 Hz:

• At the bottom left of the screen, change the Project Rate to 8000 Hz

Step 5: Export as WAV:

• Go to File > Export > Export as WAV
• In the export dialog, set Encoding to Signed 16-bit PCM
• Save the file

Step 6: Check the file size. If it exceeds 160 KB, trim or shorten the audio and re-export.

Installing the Audio File

Once converted, the audio file can be uploaded to the IoT module using the ZK600 app (for NB-Y/Queclink modules). Contact Segway support for instructions on uploading custom audio to your specific IoT type.