feat(filters): added distortion and rotation (#11)

fix(filters): renamed bands to equalizer, which is the correct property

src/core/Player.ts

@@ -150,10 +150,10 @@ export class Player<T extends BaseNode = BaseNode> extends EventEmitter {
 
 	/**
 	 * @deprecated Please use `setFilters({ bands })` instead.
-	 * @param bands The equalizer bads to be set.
+	 * @param equalizer The equalizer bads to be set.
 	 */
-	public setEqualizer(bands: readonly EqualizerBand[]) {
-		return this.setFilters({ bands });
+	public setEqualizer(equalizer: readonly EqualizerBand[]) {
+		return this.setFilters({ equalizer });
 	}
 
 	public seek(position: number) {

src/types/OutgoingPayloads.ts

@@ -155,29 +155,41 @@ export interface OutgoingFilterPayload extends BaseOutgoingPayload {
 	volume?: number;
 
 	/**
-	 * The equalizer bands.
+	 * The equalizer bands, there are 15 bands (0-14) that can be changed.
 	 */
-	bands?: readonly EqualizerBand[];
+	equalizer?: readonly EqualizerBand[];
 
 	/**
-	 * The karaoke options.
+	 * The karaoke options, uses equalization to eliminate a part of a band, usually targeting vocals.
 	 */
 	karaoke?: KaraokeOptions;
 
 	/**
-	 * The timescale options.
+	 * The timescale options, used to change the speed, pitch, and rate.
 	 */
 	timescale?: TimescaleOptions;
 
 	/**
-	 * The tremolo options.
+	 * The tremolo options, uses amplification to create a shuddering effect, where the volume quickly oscillates,
+	 * {@link https://en.wikipedia.org/wiki/File:Fuse_Electronics_Tremolo_MK-III_Quick_Demo.ogv example}.
 	 */
 	tremolo?: FrequencyDepthOptions;
 
 	/**
-	 * The vibrato options.
+	 * The vibrato options. Similar to tremolo, while tremolo oscillates the volume, vibrato oscillates the pitch.
 	 */
 	vibrato?: FrequencyDepthOptions;
+
+	/**
+	 * The distortion options.
+	 */
+	distortion?: DistortionOptions;
+
+	/**
+	 * The rotation options. This rotates the sound around the stereo channels/user headphones, also known as
+	 * {@link https://en.wikipedia.org/wiki/Panning_(audio) Audio Panning}.
+	 */
+	rotation?: RotationOptions;
 }
 
 export interface KaraokeOptions {
@@ -239,3 +251,61 @@ export interface FrequencyDepthOptions {
 	 */
 	depth?: number;
 }
+
+export interface DistortionOptions {
+	/**
+	 * The sine's offset.
+	 * @default 0.0
+	 */
+	sinOffset?: number;
+
+	/**
+	 * The sine's scale.
+	 * @default 1.0
+	 */
+	sinScale?: number;
+
+	/**
+	 * The cosine's offset.
+	 * @default 0.0
+	 */
+	cosOffset?: number;
+
+	/**
+	 * The cosine's scale.
+	 * @default 1.0
+	 */
+	cosScale?: number;
+
+	/**
+	 * The tangent offset.
+	 * @default 0.0
+	 */
+	tanOffset?: number;
+
+	/**
+	 * The tangent scale.
+	 * @default 1.0
+	 */
+	tanScale?: number;
+
+	/**
+	 * The overall offset for all waves.
+	 * @default 0.0
+	 */
+	offset?: number;
+
+	/**
+	 * The overall scale for all waves.
+	 * @default 1.0
+	 */
+	scale?: number;
+}
+
+export interface RotationOptions {
+	/**
+	 * The frequency in Hz to rotate.
+	 * @default 2.0
+	 */
+	rotationHz?: number;
+}