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VocalCanceler.ts
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VocalCanceler.ts
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export type VocalCancelerParams = {
depth?: number
};
/**
* This private class is for Vocal Canceler.
* @constructor
*/
export class VocalCanceler {
private depth = 0;
// eslint-disable-next-line no-useless-constructor
constructor() {
}
/**
* This method removes vocal part from audio on playing.
* @param {number} dataL This argument is gain level for Left channel.
* @param {number} dataR This argument is gain level for Right channel.
* @return {number} Return value is audio data except vocal part.
*/
public start(dataL: number, dataR: number): number {
return dataL - (this.depth * dataR);
}
/**
* This method gets or sets parameters for vocal canceler.
* @param {keyof VocalCancelerParams|VocalCancelerParams} params This argument is string if getter. Otherwise, setter.
* @return {VocalCancelerParams[keyof VocalCancelerParams]|VocalCanceler} Return value is parameter for vocal canceler if getter.
* Otherwise, return value is for method chain.
*/
public param(params: keyof VocalCancelerParams | VocalCancelerParams): VocalCancelerParams[keyof VocalCancelerParams] | VocalCanceler {
if (typeof params === 'string') {
switch (params) {
case 'depth':
return this.depth;
default:
return this;
}
}
for (const [key, value] of Object.entries(params)) {
switch (key) {
case 'depth':
if (typeof value === 'number') {
this.depth = value;
}
break;
default:
break;
}
}
return this;
}
/**
* This method gets vocal canceler parameters as associative array.
* @return {VocalCancelerParams}
*/
public params(): VocalCancelerParams {
return {
depth: this.depth
};
}
}