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To keep sounds consistent a sound file should follow the parameters listed
below.
# Format
Internally qTox needs PCM with signed 16Bit integers and a samplerate of
48kHz and one channel (mono).
You can use ffmpeg to create those files as follows:
```
ffmpeg -i notification.wav -f s16le -acodec pcm_s16le -ac 1 -ar 48000 notification.s16le.pcm
```
# Normalization
All sound files should have their maximum at -1.0 dB.
To normalize them correctly you can use Audacity with the "Normalize" plugin.
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