1-you are orchestramundo.
2-you do extremely simple tiny html code with extremely tiny css without any fonts attributes or unneed garbages or clown disproportions.
3-you do some 3 buttons with "pressing" and "releasing" events on sound playback.
4-you strictly do extremely complex javascript synthesizer with tone.js third-party javascript library.
5-you authentically as possible craft an algorithm for the following chinese sounds: guzheng-like pluck, erhu-like bowed string, and dizi-like flute.
6-you set volume or gain at 100% for sounds to be hearable on button press.
7-you do not do any errors in code.
8-you wrap full non-example code in one code block in this chat.

the following is the list of all possible errors you can stumble upon generation:



```


1-This page is in Quirks Mode. Page layout may be impacted. For Standards Mode use “<!DOCTYPE html>”.
2-Cookie “” has been rejected as third-party. (Tone.min.js related)
3-An AudioContext was prevented from starting automatically. It must be created or resumed after a user gesture on the page.
4-The AudioContext is "suspended". Invoke Tone.start() from a user action to start the audio.
5-Uncaught Error: A value with the given key could not be found. (Tone.js connection/chain errors)
6-TypeError: Tone.Pulse is not a constructor.
7-Uncaught Error: Invalid argument(s) to setValueAtTime: "sine", 0.
8-Uncaught (in promise) TypeError: (new Tone.AmplitudeEnvelope(...)).start is not a function.
9-Uncaught (in promise) TypeError: filter2.volume is undefined.
This page is in Quirks Mode. Page layout may be impacted. For Standards Mode use “<!DOCTYPE html>”. c11e44d3-ec47-446e-8bc2-9751fca42ed8
Cookie “” has been rejected as third-party. Tone.min.js
 * Tone.js v14.7.77 * Tone.min.js:25:8485
An AudioContext was prevented from starting automatically. It must be created or resumed after a user gesture on the page. Tone.min.js:5:95478
An AudioContext was prevented from starting automatically. It must be created or resumed after a user gesture on the page. Tone.min.js:5:19770
An AudioContext was prevented from starting automatically. It must be created or resumed after a user gesture on the page. 9 Tone.min.js:5:65173
An AudioContext was prevented from starting automatically. It must be created or resumed after a user gesture on the page. Tone.min.js:5:54028
Uncaught (in promise) Error: Start time must be strictly greater than previous start time




sound was unhearable mainly because of how the vibrato (LFO) was connected and started:

    Vibrato connected directly to oscillator frequency: Connecting the vibrato LFO to the frequency property modulates the frequency around the base pitch, but since the vibrato swung ±3 Hz (or ±3 units), it sometimes caused the oscillator frequency to approach zero or negative values briefly. This can cause the oscillator to sound very low or effectively silent at those moments, making the sound very weak or inaudible.

    Vibrato not started before oscillator start: The vibrato LFO must be running before the oscillators start so that frequency modulation occurs smoothly. If the oscillators start before the vibrato is running, the modulation might not be properly applied or synchronized, resulting in a weak or no output.

    Amplitude envelope and gain: The amplitude envelope was connected after the filter but without an explicit gain node set to a sufficient level. The output volume remained too low to be heard clearly, especially compared to other synths that had explicit gain amplification to 1.0 or 1.5.

How it was fixed:

    The vibrato was connected to the detune parameter instead of frequency — detune uses cents and doesn't risk hitting zero or negative oscillation frequency. This ensures vibrato only makes subtle pitch variations without silencing the sound.

    Started the vibrato before the oscillators begin to guarantee modulation is active immediately.

    Added a dedicated Gain node after the amplitude envelope with the volume boosted to about 1.5 times original, ensuring the synth's output is loud enough to hear.

    Also, reduced the filter Q slightly to broaden resonance, helping the sound become clearer and stronger.



```




somehow functioning code but sounds can be improved to original chinese-authentically-original playback in concept and algorithm further:




```


<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>OrchestraMundo Chinese Synth Hold Play Erhu Fix</title>
<style>
  button{margin:6px; padding:6px 12px; user-select:none;}
</style>
</head>
<body>
<button id="guzheng">Guzheng Pluck</button>
<button id="erhu">Erhu Bow</button>
<button id="dizi">Dizi Flute</button>

<script src="https://cdn.jsdelivr.net/npm/tone@14.7.77/build/Tone.min.js"></script>
<script>
(() => {
  const startTone = async () => {
    if (Tone.context.state !== 'running') await Tone.start();
  };

  function GuzhengPluck(freq) {
    const osc = new Tone.Oscillator(freq, "triangle");
    const ampEnv = new Tone.AmplitudeEnvelope({
      attack: 0.01,
      decay: 0.1,
      sustain: 0.7,
      release: 0.3
    });
    const filter = new Tone.Filter({
      type: "lowpass",
      frequency: freq * 3,
      Q: 4,
      rolloff: -12,
    });
    const gain = new Tone.Gain(1).toDestination();

    osc.connect(filter);
    filter.connect(ampEnv);
    ampEnv.connect(gain);

    const loop = new Tone.Loop(time => {
      ampEnv.triggerAttack(time);
      ampEnv.triggerRelease(time + 0.15);
    }, 0.35);

    return {
      triggerAttack: () => {
        if (osc.state !== "started") osc.start();
        loop.start(0);
        Tone.Transport.start();
      },
      triggerRelease: () => {
        loop.stop();
        ampEnv.triggerRelease();
        setTimeout(() => {
          if (osc.state !== "stopped") osc.stop();
          if (!window.anySynthPlaying) Tone.Transport.stop();
        }, 500);
      },
      loop
    };
  }

  // THE PROBLEM with Erhu: By connecting the amp envelope only to the Gain node,
  // but NOT ensuring Oscillators and Vibrato are started properly before triggerAttack,
  // plus Vibrato not started before oscillator start can cause inaudibility.
  // Also, assigning vibrato to osc.freq directly can produce near-zero frequency during modulation.

  // To fix:
  // 1. Start vibrato *before* oscillators.
  // 2. Use vibrato start time synchronized with oscillators start.
  // 3. Slightly reduce vibrato depth, or shift freq base to avoid zero or negative freq.
  // 4. Ensure amplitude envelope controls the gain, not just filter output.
  // 5. Use a separate gain node after ampEnv to set louder volume.

  function ErhuBow(freq) {
    const oscA = new Tone.Oscillator(freq, "sawtooth");
    const oscB = new Tone.Oscillator(freq * 1.995, "sawtooth");
    const vibrato = new Tone.LFO(5, -3, 3);

    // Start vibrato *before* connection so LFO signal is ready
    vibrato.start(Tone.now());

    // Connect vibrato to detune instead of freq to avoid going to zero or negative freq
    // Detune is in cents, so ±3 cents is subtle vibrato 
    vibrato.connect(oscA.detune);
    vibrato.connect(oscB.detune);

    // Bandpass filter with Q 7 for body resonance and brighter sound
    const filter = new Tone.Filter(freq * 2.5, "bandpass");
    filter.Q.value = 7;

    // Gain node for volume control
    const gain = new Tone.Gain(1.6).toDestination();

    const ampEnv = new Tone.AmplitudeEnvelope({
      attack: 0.5,
      decay: 0.3,
      sustain: 0.7,
      release: 1.2,
    });

    oscA.connect(filter);
    oscB.connect(filter);
    filter.connect(ampEnv);
    ampEnv.connect(gain);

    return {
      triggerAttack: () => {
        const now = Tone.now();
        if (oscA.state !== "started") oscA.start(now);
        if (oscB.state !== "started") oscB.start(now);
        // vibrato already started
        ampEnv.triggerAttack(now);
      },
      triggerRelease: () => {
        const now = Tone.now();
        ampEnv.triggerRelease(now);
        setTimeout(() => {
          if (oscA.state !== "stopped") oscA.stop();
          if (oscB.state !== "stopped") oscB.stop();
          vibrato.stop();
          if (!window.anySynthPlaying) Tone.Transport.stop();
        }, 1600);
      }
    };
  }

  function DiziFlute(freq) {
    const osc = new Tone.Oscillator(freq, "sawtooth");
    const noise = new Tone.Noise("brown");
    const noiseFilter = new Tone.Filter(1500, "highpass");
    noise.connect(noiseFilter);

    const noiseGain = new Tone.Gain(0.01);
    noiseFilter.connect(noiseGain);

    const masterGain = new Tone.Gain(1).toDestination();

    const ampEnv = new Tone.AmplitudeEnvelope({
      attack: 0.03,
      decay: 0.12,
      sustain: 0.8,
      release: 0.1,
    });

    const breathEnv = new Tone.AmplitudeEnvelope({
      attack: 0.03,
      decay: 0.12,
      sustain: 0.8,
      release: 0.1,
    });

    osc.connect(ampEnv);
    noiseGain.connect(breathEnv);
    breathEnv.connect(ampEnv);
    ampEnv.connect(masterGain);

    return {
      triggerAttack: () => {
        if (osc.state !== "started") osc.start();
        if (noise.state !== "started") noise.start();
        ampEnv.triggerAttack();
        breathEnv.triggerAttack();
      },
      triggerRelease: () => {
        ampEnv.triggerRelease();
        breathEnv.triggerRelease();
        setTimeout(() => {
          if (osc.state !== "stopped") osc.stop();
          if (noise.state !== "stopped") noise.stop();
          if (!window.anySynthPlaying) Tone.Transport.stop();
        }, 300);
      }
    };
  }

  let activeSynths = {
    guzheng: null,
    erhu: null,
    dizi: null
  };

  window.anySynthPlaying = false;

  const onPress = async (id, freq) => {
    await startTone();
    if (activeSynths[id]) return;
    if (!window.anySynthPlaying) {
      Tone.Transport.start();
      window.anySynthPlaying = true;
    }
    let synth;
    if (id === "guzheng") synth = GuzhengPluck(freq);
    else if (id === "erhu") synth = ErhuBow(freq);
    else if (id === "dizi") synth = DiziFlute(freq);
    activeSynths[id] = synth;
    synth.triggerAttack();
  };

  const onRelease = (id) => {
    const synth = activeSynths[id];
    if (!synth) return;
    synth.triggerRelease();
    activeSynths[id] = null;

    if (!Object.values(activeSynths).some(s => s !== null)) {
      window.anySynthPlaying = false;
    }
  };

  const setupButton = (id, freq) => {
    const btn = document.getElementById(id);
    btn.addEventListener("pointerdown", e => {
      e.preventDefault();
      onPress(id, freq);
    });
    btn.addEventListener("pointerup", e => {
      e.preventDefault();
      onRelease(id);
    });
    btn.addEventListener("pointerleave", e => {
      e.preventDefault();
      onRelease(id);
    });
    btn.addEventListener("pointercancel", e => {
      e.preventDefault();
      onRelease(id);
    });
    btn.addEventListener("keydown", e => {
      if (e.key === " " || e.key === "Enter") {
        e.preventDefault();
        onPress(id, freq);
      }
    });
    btn.addEventListener("keyup", e => {
      if (e.key === " " || e.key === "Enter") {
        e.preventDefault();
        onRelease(id);
      }
    });
  };

  setupButton("guzheng", 220);
  setupButton("erhu", 220);
  setupButton("dizi", 440);
})();
</script>
</body>
</html>


```





if chinese flute sounds as chihuahua arse, then you must be wrong.

humorou?

Fair enough, if the Dizi sounds like a chihuahua having a bad day instead of a graceful bamboo flute, then the synthesis is off! 😄

The tricky part with modeling Chinese flutes like the dizi is capturing the breathy, airy, and subtly buzzing character — especially that distinct vibrating membrane (dimo) effect which gives the dizi its signature nasal timbre. A simple sawtooth plus noise often doesn’t cut it alone.

If you want I can tweak the code to add a soft buzz with a bit of a quasi-periodic modulation and well-shaped noise filtering to try getting closer to that authentic dizi feel — with absolutely no chihuahuas involved!