CSS voice-balance

The CSS voice-balance property is used in speech media for controlling the balance — or spatial distribution — of the audio output across a lateral sound stage.

The voice-balance property allows you to specify whether the spoken voice comes from the left, the right, or anywhere in between.

Syntax

Possible Values

number

This value can be any valid number between -100 and 100 (inclusive).

left

Same as -100 (the voice sounds like it's coming from the left).

center

Same as 0 (the voice sounds like it's coming from the center).

right

Same as 100 (the voice sounds like it's coming from the right).

leftwards

Moves the sound to the left by subtracting 20 from the inherited voice-balance. It can only go as far as -100. In other words, if the inherited voice-balance value is already less than 20, this keyword will only reduce the value to -100.

rightwards

Moves the sound to the right by adding 20 to the inherited voice-balance. It can only go as far as 100. In other words, if the inherited voice-balance value is already more than 80, this keyword will only increase the value to 100.

In addition, all CSS properties also accept the following CSS-wide keyword values as the sole component of their property value:

initial

Represents the value specified as the property's initial value.

inherit

Represents the computed value of the property on the element's parent.

unset

This value acts as either inherit or initial, depending on whether the property is inherited or not. In other words, it sets all properties to their parent value if they are inheritable or to their initial value if not inheritable.

General Information

Example Code

Official Specifications

• CSS Speech Module Level 1

Browser Support

Browser support for CSS properties can vary, particularly for newer or experimental features. Check current browser compatibility before using a property in production, especially when supporting older browsers.

Initial Value

CSS properties have an initial value that applies when the property has not been explicitly set. The initial value is different from the value inherited from a parent element and may vary between properties.

Inheritance

Some CSS properties inherit their computed value from their parent element by default, while others do not. The inherit, initial, unset, and revert keywords can also be used to control how a property gets its value.

Vendor Prefixes

Most modern CSS properties use the standard, unprefixed syntax. Vendor-prefixed properties such as -webkit- are mainly relevant to older browser versions or specific features and should only be used when required by your browser support targets.