<!-- SS · part 152 -->
is._oscillator&&this._oscillator.setPeriodicWave(this._wave)}else{const[e,s]=this._getRealImaginary(t,this._phase),n=this.context.createPeriodicWave(e,s);this._wave=n,null!==this._oscillator&&this._oscillator.setPeriodicWave(this._wave),Xo._periodicWaveCache.push({imag:s,partialCount:this._partialCount,partials:this._partials,phase:this._phase,real:e,type:this._type,wave:this._wave}),Xo._periodicWaveCache.length>100&&Xo._periodicWaveCache.shift()}}}get baseType(){return this._type.replace(this.partialCount.toString(),"")}set baseType(t){this.partialCount&&"custom"!==this._type&&"custom"!==t?this.type=t+this.partialCount:this.type=t}get partialCount(){return this._partialCount}set partialCount(t){Un(t,0);let e=this._type;const s=/^(sine|triangle|square|sawtooth)(\d+)$/.exec(this._type);if(s&&(e=s[1]),"custom"!==this._type)this.type=0===t?e:e+t.toString();else{const e=new Float32Array(t);this._partials.forEach(((t,s)=>e[s]=t)),this._partials=Array.from(e),this.type=this._type}}_getRealImaginary(t,e){let s=2048;const n=new Float32Array(s),i=new Float32Array(s);let o=1;if("custom"===t){if(o=this._partials.length+1,this._partialCount=this._partials.length,s=o,0===this._partials.length)return[n,i]}else{const e=/^(sine|triangle|square|sawtooth)(\d+)$/.exec(t);e?(o=parseInt(e[2],10)+1,this._partialCount=parseInt(e[2],10),t=e[1],o=Math.max(o,2),s=o):this._partialCount=0,this._partials=[]}for(let r=1;r<s;++r){const s=2/(r*Math.PI);let a;switch(t){case"sine":a=r<=o?1:0,this._partials[r-1]=a;break;case"square":a=1&r?2*s:0,this._partials[r-1]=a;break;case"sawtooth":a=s*(1&r?1:-1),this._partials[r-1]=a;break;case"triangle":a=1&r?s*s*2*(r-1>>1&1?-1:1):0,this._partials[r-1]=a;break;case"custom":a=this._partials[r-1];break;default:throw new TypeError("Oscillator: invalid type: "+t)}0!==a?(n[r]=-a*Math.sin(e*r),i[r]=a*Math.cos(e*r)):(n[r]=0,i[r]=0)}return[n,i]}_inverseFFT(t,e,s){let n=0;const i=t.length;for(let o=0;o<i;o++)n+=t[o]*Math.cos(o*s)+e[o]*Math.sin(o*s);return n}getInitialValue(){const[t,e]=this._getRealImaginary(this._type,0);let s=0;const n=2*Math.PI;for(let i=0;i<32;i++)s=Math.max(this._inverseFFT(t,e,i/32*n),s);return xi(-this._inverseFFT(t,e,this._phase)/s,-1,1)}get partials(){return this._partials.slice(0,this.partialCount)}set partials(t){this._partials=t,this._partialCount=this._partials.length,t.length&&(this.type="custom")}get phase(){return this._phase*(180/Math.PI)}set phase(t){this._phase=t*Math.PI/180,this.type=this._type}asArray(){return ni(this,arguments,void 0,(function*(t=1024){return Qo(this,t)}))}dispose(){return super.dispose(),null!==this._oscillator&&this._oscillator.dispose(),this._wave=void 0,this.frequency.dispose(),this.detune.dispose(),this}}Xo._periodicWaveCache=[];class Yo extends qo{constructor(){super(...arguments),this.name="AudioToGain",this._norm=new Io({context:this.context,mapping:t=>(t+1)/2}),this.input=this._norm,this.output=this._norm}dispose(){return super.dispose(),this._norm.dispose(),this}}class $o extends po{constructor(){const t=ui($o.getDefaults(),arguments,["value"]);super(t),this.name="Multiply",this.override=!1,this._mult=this.input=this.output=new ho({context:this.context,minValue:t.minValue,maxValue:t.maxValue}),this.factor=this._param=this._mult.gain,this.factor.setValueAtTime(t.value,0)}static getDefaults(){return Object.assign(po.getDefaults(),{value:0})}dispose(){return super.dispose(),this._mult.dispose(),this}}class Ho extends jo{constructor(){const t=ui(Ho.getDefaults(),arguments,["frequency","type","modulationType"]);super(t),this.name="AMOscillator",this._modulationScale=new Yo({context:this.context}),this._modulationNode=new ho({context:this.context}),this._carrier=new Xo({context:this.context,detune:t.detune,frequency:t.frequency,onstop:()=>this.onstop(this),phase:t.phase,type:t.type}),this.frequency=this._carrier.frequency,this.detune=this._carrier.detune,this._modulator=new Xo({context:this.context,phase:t.phase,type:t.modulationType}),this.harmonicity=new $o({context:this.context,units:"positive",value:t.harmonicity}),this.frequency.chain(this.harmonicity,this._modulator.frequency),this._modulator.chain(this._modulationScale,this._modulationNode.gain),this._carrier.chain(this._modulationNode,this.output),Di(this,["frequency","detune","harmonicity"])}static getDefaults(){return Object.assign(Xo.getDefaults(),{harmonicity:1,modulationType:"square"})}_start(t){this._modulator.start(t),this._carrier.start(t)}_stop(t){this._modulator.stop(t),this._carrier.stop(t)}_restart(t){this._modulator.restart(t),this._carrier.restart(t)}get type(){return this._carrier.type}set type(t){this._carrier.type=t}get baseType(){return this._carrier.baseType}set baseType(t){this._carrier.baseType=t}get partialCount(){return this._carrier.partialCount}set partialCount(t){this._carrier.partialCount=t}get modulationType(){return this._modulator.type}set modulationType(t){this._modulator.type=t}get phase(){return this._carrier.phase}set phase(t){this._ca