# Volume
## Volume Unit
We often encounter two types of volume units in Unity and BroAudio, both relative to the original audio file's volume:
1. **Normalized Volume:** When set to 1, it represents 100% of the file's original volume, while 0 represents 0% volume, which means complete silence. Unity's [AudioSource](https://docs.unity3d.com/Manual/class-AudioSource.html) volume uses this unit.
2. **Decibel Volume (dB):** This is the most commonly used unit to describe volume. It represents a logarithmic value. When set to 0dB, it means no changes to the file's original volume (so 0dB = 1 normalized volume). Unity's [AudioMixer](https://docs.unity3d.com/Manual/AudioMixer.html) uses this unit. [Decibel(dB) Wikipedia](https://en.wikipedia.org/wiki/Decibel)
{% hint style="info" %}
Decibel (dB) is a relative unit, so different reference objects and ranges can lead to different calculations. However, here we are referring to **dBFS**, which uses the original volume of the audio file as its Full Scale.
{% endhint %}
These two volume units can be converted into each other. Although **you don't need to do the calculations** yourself, if you are interested, the formula is as follows:
$$dB = 20log (V1/V2)$$
(V1/V2) is the same as Normalized Volume. There are many simple [online calculators](https://daycounter.com/Calculators/Decibels-Calculator.phtml) available for use. By entering the Normalized Volume into the Voltage Gain, you can convert it to dB.
## Volume Range
In BroAudio, every sound plays through the [Audio Mixer](https://man572142s-organization.gitbook.io/broaudio/designs/audio-mixer), with a volume range of 0 to 10 (-80dB to +20dB). This is **20dB more** than what [Audio Source](https://docs.unity3d.com/Manual/class-AudioSource.html) offers, meaning you can produce sounds louder than the original files. This feature helps you to easily adjust and balance the overall volume.
{% hint style="warning" %}
Volume range will be limited to 0\~1 (-80dB\~0dB) in WebGL, [more details.](https://man572142s-organization.gitbook.io/broaudio/overview/compatibility#webgl)
{% endhint %}
## Editor Slider
The volume slider is based on decibel value; it's a logarithmic slider instead of a linear slider like [Audio Source](https://docs.unity3d.com/Manual/class-AudioSource.html)'s volume. This matches human sound perception better and allows for easier fine-tuning.
To further ensure precision, most audio software, including [Unity Audio Mixer](https://docs.unity3d.com/Manual/AudioMixer.html), features custom scale settings. Below is a comparison of different slider types, with each measured in decibels(dB) :
## All volume settings work in conjunction
There are four volume settings available in BroAudio, and they all work in conjunction.
1. [Clip Volume](https://man572142s-organization.gitbook.io/broaudio/core-features/library-manager/design-the-sound/..#clip-parameters)
2. [Master Volume](https://man572142s-organization.gitbook.io/broaudio/core-features/library-manager/design-the-sound/..#master-volume) (of the entity)
3. [BroAudio.SetVolume(SoundID)](https://man572142s-organization.gitbook.io/broaudio/reference/api-documentation/class/broaudio#operations) or [IAudioPlayer.SetVolume()](https://man572142s-organization.gitbook.io/broaudio/reference/api-documentation/interface/iaudioplayer#public-methods)
4. [BroAudio.SetVolume(BroAudioType)](https://man572142s-organization.gitbook.io/broaudio/reference/api-documentation/class/broaudio#operations)
The final playback volume (in normalized) will be
**Clip Volume** \* **Entity Master Volume** \* **TrackVolume**(if 3. was used) \* **AudioTypeVolume**(if 4. was used)
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