# DynamicsProcessing.Channel Added in[API level 28](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) # Channel *** ** * ** *** Kotlin\|[Java](https://developer.android.com/reference/android/media/audiofx/DynamicsProcessing.Channel "View this page in Java") ``` class Channel ``` |---|------------------------------------------------------------------------------------------------------------------------------------------------------| | [kotlin.Any](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-any/index.html) || | ↳ | [android.media.audiofx.DynamicsProcessing.Channel](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Channel#) | Class for Channel configuration parameters. It is composed of multiple stages, which can be used/enabled independently. Stages not used or disabled will be bypassed and the sound would be unaffected by them. ## Summary | Public constructors || |------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---| | [Channel](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Channel#Channel(android.media.audiofx.DynamicsProcessing.Channel))`(`cfg:` `[DynamicsProcessing.Channel](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Channel#)!`)` Class constructor for Channel configuration | | [Channel](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Channel#Channel(kotlin.Float,%20kotlin.Boolean,%20kotlin.Int,%20kotlin.Boolean,%20kotlin.Int,%20kotlin.Boolean,%20kotlin.Int,%20kotlin.Boolean))`(`inputGain:` `[Float](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-float/index.html)`, `preEqInUse:` `[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html)`, `preEqBandCount:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `mbcInUse:` `[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html)`, `mbcBandCount:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `postEqInUse:` `[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html)`, `postEqBandCount:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `limiterInUse:` `[Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html)`)` Class constructor for Channel configuration. | | Public methods || |--------------------------------------------------------------------------------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | [Float](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-float/index.html) | [getInputGain](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Channel#getInputGain())`()` Gets inputGain value in decibels (dB). | | [DynamicsProcessing.Limiter](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Limiter)! | [getLimiter](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Channel#getLimiter())`()` Gets Limiter configuration stage | | [DynamicsProcessing.Mbc](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Mbc)! | [getMbc](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Channel#getMbc())`()` Gets Mbc configuration stage | | [DynamicsProcessing.MbcBand](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.MbcBand)! | [getMbcBand](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Channel#getMbcBand(kotlin.Int))`(`band:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`)` Gets MbcBand configuration for Mbc stage, for given band index. | | [DynamicsProcessing.Eq](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Eq)! | [getPostEq](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Channel#getPostEq())`()` Gets PostEq configuration stage | | [DynamicsProcessing.EqBand](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.EqBand)! | [getPostEqBand](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Channel#getPostEqBand(kotlin.Int))`(`band:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`)` Gets EqBand for PostEq stage for given band index. | | [DynamicsProcessing.Eq](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Eq)! | [getPreEq](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Channel#getPreEq())`()` Gets PreEq configuration stage | | [DynamicsProcessing.EqBand](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.EqBand)! | [getPreEqBand](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Channel#getPreEqBand(kotlin.Int))`(`band:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`)` Gets EqBand for PreEq stage for given band index. | | [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [setInputGain](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Channel#setInputGain(kotlin.Float))`(`inputGain:` `[Float](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-float/index.html)`)` Sets inputGain value in decibels (dB). | | [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [setLimiter](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Channel#setLimiter(android.media.audiofx.DynamicsProcessing.Limiter))`(`limiter:` `[DynamicsProcessing.Limiter](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Limiter)!`)` Sets Limiter configuration stage. | | [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [setMbc](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Channel#setMbc(android.media.audiofx.DynamicsProcessing.Mbc))`(`mbc:` `[DynamicsProcessing.Mbc](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Mbc)!`)` Sets Mbc configuration stage. | | [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [setMbcBand](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Channel#setMbcBand(kotlin.Int,%20android.media.audiofx.DynamicsProcessing.MbcBand))`(`band:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `mbcBand:` `[DynamicsProcessing.MbcBand](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.MbcBand)!`)` Sets MbcBand for Mbc stage for given band index | | [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [setPostEq](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Channel#setPostEq(android.media.audiofx.DynamicsProcessing.Eq))`(`postEq:` `[DynamicsProcessing.Eq](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Eq)!`)` Sets PostEq configuration stage. | | [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [setPostEqBand](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Channel#setPostEqBand(kotlin.Int,%20android.media.audiofx.DynamicsProcessing.EqBand))`(`band:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `postEqBand:` `[DynamicsProcessing.EqBand](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.EqBand)!`)` Sets EqBand for PostEq stage for given band index | | [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [setPreEq](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Channel#setPreEq(android.media.audiofx.DynamicsProcessing.Eq))`(`preEq:` `[DynamicsProcessing.Eq](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Eq)!`)` Sets PreEq configuration stage. | | [Unit](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-unit/index.html) | [setPreEqBand](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Channel#setPreEqBand(kotlin.Int,%20android.media.audiofx.DynamicsProcessing.EqBand))`(`band:` `[Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html)`, `preEqBand:` `[DynamicsProcessing.EqBand](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.EqBand)!`)` Sets EqBand for PreEq stage for given band index | | [String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html) | [toString](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Channel#toString())`()`
| ## Public constructors ### Channel Added in[API level 28](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` Channel(cfg: DynamicsProcessing.Channel!) ``` Class constructor for Channel configuration | Parameters || |-------|--------------------------------------------------------------------------------------------------------------------------------------------------| | `cfg` | [DynamicsProcessing.Channel](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Channel#)!:copy constructor | ### Channel Added in[API level 28](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` Channel(     inputGain: Float,     preEqInUse: Boolean,     preEqBandCount: Int,     mbcInUse: Boolean,     mbcBandCount: Int,     postEqInUse: Boolean,     postEqBandCount: Int,     limiterInUse: Boolean) ``` Class constructor for Channel configuration. | Parameters || |-------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| | `inputGain` | [Float](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-float/index.html):value in decibels (dB) of level change applied to the audio before processing. A value of 0 dB means no change. | | `preEqInUse` | [Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html):true if PreEq stage will be used, false otherwise. This can't be changed later. | | `preEqBandCount` | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html):number of bands for PreEq stage. This can't be changed later. | | `mbcInUse` | [Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html):true if Mbc stage will be used, false otherwise. This can't be changed later. | | `mbcBandCount` | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html):number of bands for Mbc stage. This can't be changed later. | | `postEqInUse` | [Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html):true if PostEq stage will be used, false otherwise. This can't be changed later. | | `postEqBandCount` | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html):number of bands for PostEq stage. This can't be changed later. | | `limiterInUse` | [Boolean](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-boolean/index.html):true if Limiter stage will be used, false otherwise. This can't be changed later. | ## Public methods ### getInputGain Added in[API level 28](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` fun getInputGain(): Float ``` Gets inputGain value in decibels (dB). 0 dB means no change; | Return || |--------------------------------------------------------------------------------|-----------------------------| | [Float](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-float/index.html) | gain value in decibels (dB) | ### getLimiter Added in[API level 28](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` fun getLimiter(): DynamicsProcessing.Limiter! ``` Gets Limiter configuration stage | Return || |--------------------------------------------------------------------------------------------------------------------------------|-----------------------------| | [DynamicsProcessing.Limiter](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Limiter)! | Limiter configuration stage | ### getMbc Added in[API level 28](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` fun getMbc(): DynamicsProcessing.Mbc! ``` Gets Mbc configuration stage | Return || |------------------------------------------------------------------------------------------------------------------------|-------------------------| | [DynamicsProcessing.Mbc](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Mbc)! | Mbc configuration stage | ### getMbcBand Added in[API level 28](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` fun getMbcBand(band: Int): DynamicsProcessing.MbcBand! ``` Gets MbcBand configuration for Mbc stage, for given band index. | Parameters || |--------|---------------------------------------------------------------------------------------------------------------------| | `band` | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html):index of band of interest from Mbc stage | | Return || |--------------------------------------------------------------------------------------------------------------------------------|-----------------------| | [DynamicsProcessing.MbcBand](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.MbcBand)! | MbcBand configuration | ### getPostEq Added in[API level 28](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` fun getPostEq(): DynamicsProcessing.Eq! ``` Gets PostEq configuration stage | Return || |----------------------------------------------------------------------------------------------------------------------|----------------------------| | [DynamicsProcessing.Eq](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Eq)! | PostEq configuration stage | ### getPostEqBand Added in[API level 28](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` fun getPostEqBand(band: Int): DynamicsProcessing.EqBand! ``` Gets EqBand for PostEq stage for given band index. | Parameters || |--------|------------------------------------------------------------------------------------------------------------------------| | `band` | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html):index of band of interest from PostEq stage | | Return || |------------------------------------------------------------------------------------------------------------------------------|----------------------| | [DynamicsProcessing.EqBand](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.EqBand)! | EqBand configuration | ### getPreEq Added in[API level 28](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` fun getPreEq(): DynamicsProcessing.Eq! ``` Gets PreEq configuration stage | Return || |----------------------------------------------------------------------------------------------------------------------|---------------------------| | [DynamicsProcessing.Eq](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Eq)! | PreEq configuration stage | ### getPreEqBand Added in[API level 28](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` fun getPreEqBand(band: Int): DynamicsProcessing.EqBand! ``` Gets EqBand for PreEq stage for given band index. | Parameters || |--------|-----------------------------------------------------------------------------------------------------------------------| | `band` | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html):index of band of interest from PreEq stage | | Return || |------------------------------------------------------------------------------------------------------------------------------|----------------------| | [DynamicsProcessing.EqBand](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.EqBand)! | EqBand configuration | ### setInputGain Added in[API level 28](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` fun setInputGain(inputGain: Float): Unit ``` Sets inputGain value in decibels (dB). 0 dB means no change; | Parameters || |-------------|--------------------------------------------------------------------------------------------------------------------| | `inputGain` | [Float](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-float/index.html):desired gain value in decibels (dB) | ### setLimiter Added in[API level 28](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` fun setLimiter(limiter: DynamicsProcessing.Limiter!): Unit ``` Sets Limiter configuration stage. | Parameters || |-----------|-----------------------------------------------------------------------------------------------------------------------------------------------------| | `limiter` | [DynamicsProcessing.Limiter](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Limiter)!:configuration stage. | ### setMbc Added in[API level 28](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` fun setMbc(mbc: DynamicsProcessing.Mbc!): Unit ``` Sets Mbc configuration stage. New Mbc stage must have the same number of bands than original Mbc stage. | Parameters || |-------|-------------------------------------------------------------------------------------------------------------------------| | `mbc` | [DynamicsProcessing.Mbc](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Mbc)!: | ### setMbcBand Added in[API level 28](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` fun setMbcBand(     band: Int,     mbcBand: DynamicsProcessing.MbcBand! ): Unit ``` Sets MbcBand for Mbc stage for given band index | Parameters || |-----------|--------------------------------------------------------------------------------------------------------------------------------------------------------| | `band` | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html):index of band of interest from Mbc Stage | | `mbcBand` | [DynamicsProcessing.MbcBand](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.MbcBand)!:configuration to be set | ### setPostEq Added in[API level 28](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` fun setPostEq(postEq: DynamicsProcessing.Eq!): Unit ``` Sets PostEq configuration stage. New PostEq stage must have the same number of bands than original PostEq stage. | Parameters || |----------|------------------------------------------------------------------------------------------------------------------------------------| | `postEq` | [DynamicsProcessing.Eq](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Eq)!:configuration | ### setPostEqBand Added in[API level 28](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` fun setPostEqBand(     band: Int,     postEqBand: DynamicsProcessing.EqBand! ): Unit ``` Sets EqBand for PostEq stage for given band index | Parameters || |--------------|-------------------------------------------------------------------------------------------------------------------------------------------------------| | `band` | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html):index of band of interest from PostEq stage | | `postEqBand` | [DynamicsProcessing.EqBand](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.EqBand)!:configuration to be set. | ### setPreEq Added in[API level 28](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` fun setPreEq(preEq: DynamicsProcessing.Eq!): Unit ``` Sets PreEq configuration stage. New PreEq stage must have the same number of bands than original PreEq stage. | Parameters || |---------|------------------------------------------------------------------------------------------------------------------------------------| | `preEq` | [DynamicsProcessing.Eq](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.Eq)!:configuration | ### setPreEqBand Added in[API level 28](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` fun setPreEqBand(     band: Int,     preEqBand: DynamicsProcessing.EqBand! ): Unit ``` Sets EqBand for PreEq stage for given band index | Parameters || |-------------|-------------------------------------------------------------------------------------------------------------------------------------------------------| | `band` | [Int](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-int/index.html):index of band of interest from PreEq stage | | `preEqBand` | [DynamicsProcessing.EqBand](https://developer.android.com/reference/kotlin/android/media/audiofx/DynamicsProcessing.EqBand)!:configuration to be set. | ### toString Added in[API level 28](https://developer.android.com/guide/topics/manifest/uses-sdk-element.html#ApiLevels) ``` fun toString(): String ``` | Return || |----------------------------------------------------------------------------------|----------------------------------------| | [String](https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-string/index.html) | a string representation of the object. |