GainNode

GainNode 介面代表的是音量改變。 這是 AudioNode (en-US) 音訊處理模組,可以對輸入的訊號做增益 (gain) 後輸出。一個 GainNode 有一個輸入和一個輸出,兩者有相同的聲道數。

增益 (gain) 是無單位的數值,隨時間變化,會用來和所有輸入聲道的取樣做相乘。 如果更改的話,新的增益會用 de-zippering 演算法處理,以避免輸出聲音出現難聽的「喀」聲。

The GainNode is increasing the gain of the output.

Number of inputs 1
Number of outputs 1
Channel count mode "max"
Channel count 2 (not used in the default count mode)
Channel interpretation "speakers"

Constructor

GainNode() (en-US)
Creates a new instance of an GainNode object.

Properties

Inherits properties from its parent, AudioNode (en-US).

GainNode.gain Read only
a-rate AudioParam (en-US) ,代表增益值

Methods

No specific method; inherits methods from its parent, AudioNode (en-US).

Example

{{page("/en-US/docs/Web/API/AudioContext.createGain","Example")}}

Specifications

Specification
Web Audio API
# GainNode

Browser compatibility

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See also