> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fish.audio/llms.txt
> Use this file to discover all available pages before exploring further.

# Fine-grained Control

> Advanced control over speech generation

export const AudioTranscript = ({voices, page}) => {
  const resolvedVoices = voices?.length ? voices : (() => {
    if (!page) return [];
    const baseUrl = 'https://pub-b995142090474379a930b856ab79b4d4.r2.dev/audio';
    const pageVoices = [{
      id: '8ef4a238714b45718ce04243307c57a7',
      name: 'E-girl'
    }, {
      id: '802e3bc2b27e49c2995d23ef70e6ac89',
      name: 'Energetic Male'
    }, {
      id: '933563129e564b19a115bedd57b7406a',
      name: 'Sarah'
    }, {
      id: 'bf322df2096a46f18c579d0baa36f41d',
      name: 'Adrian'
    }, {
      id: 'b347db033a6549378b48d00acb0d06cd',
      name: 'Selene'
    }, {
      id: '536d3a5e000945adb7038665781a4aca',
      name: 'Ethan'
    }];
    return pageVoices.map(voice => ({
      ...voice,
      url: `${baseUrl}/${page}/${voice.id}.mp3`
    }));
  })();
  const [selectedVoice, setSelectedVoice] = useState(0);
  const [isPlaying, setIsPlaying] = useState(false);
  const [currentTime, setCurrentTime] = useState(0);
  const [duration, setDuration] = useState(0);
  const [isDropdownOpen, setIsDropdownOpen] = useState(false);
  const audioRef = useRef(null);
  const dropdownRef = useRef(null);
  useEffect(() => {
    const audio = audioRef.current;
    if (!audio) return;
    const updateTime = () => setCurrentTime(audio.currentTime);
    const updateDuration = () => setDuration(audio.duration);
    const handleEnded = () => setIsPlaying(false);
    audio.addEventListener('timeupdate', updateTime);
    audio.addEventListener('loadedmetadata', updateDuration);
    audio.addEventListener('ended', handleEnded);
    return () => {
      audio.removeEventListener('timeupdate', updateTime);
      audio.removeEventListener('loadedmetadata', updateDuration);
      audio.removeEventListener('ended', handleEnded);
    };
  }, []);
  useEffect(() => {
    const handleClickOutside = event => {
      if (dropdownRef.current && !dropdownRef.current.contains(event.target)) {
        setIsDropdownOpen(false);
      }
    };
    if (isDropdownOpen) {
      document.addEventListener('mousedown', handleClickOutside);
    }
    return () => {
      document.removeEventListener('mousedown', handleClickOutside);
    };
  }, [isDropdownOpen]);
  useEffect(() => {
    if (audioRef.current) {
      audioRef.current.pause();
      audioRef.current.load();
      setIsPlaying(false);
      setCurrentTime(0);
    }
  }, [selectedVoice]);
  const togglePlay = () => {
    if (isPlaying) {
      audioRef.current.pause();
    } else {
      audioRef.current.play();
    }
    setIsPlaying(!isPlaying);
  };
  const handleProgressChange = e => {
    const newTime = parseFloat(e.target.value);
    audioRef.current.currentTime = newTime;
    setCurrentTime(newTime);
  };
  const formatTime = time => {
    if (isNaN(time)) return '0:00';
    const minutes = Math.floor(time / 60);
    const seconds = Math.floor(time % 60);
    return `${minutes}:${seconds.toString().padStart(2, '0')}`;
  };
  const currentVoice = resolvedVoices[selectedVoice];
  return <div className="border rounded-lg bg-card border-gray-200 dark:border-gray-800">
      {}
      <div className="grid grid-cols-3 items-center px-3 py-1.5 bg-muted border-b border-gray-200 dark:border-gray-800">
        <span className="text-xs font-medium">Listen to Page</span>

        <span className="text-xs font-semibold text-muted-foreground text-center">Powered by Fish Audio S2 Pro</span>

        {resolvedVoices.length > 1 ? <div className="relative justify-self-end" ref={dropdownRef}>
            <button onClick={() => setIsDropdownOpen(!isDropdownOpen)} className="flex items-center gap-1.5 px-3 py-1 rounded-full bg-muted hover:bg-gray-200 dark:hover:bg-gray-700 transition-all duration-200 cursor-pointer text-xs">
              <span className="text-muted-foreground">Voice:</span>
              <span className="font-medium">{resolvedVoices[selectedVoice]?.name}</span>
              <svg className={`w-3 h-3 transition-transform duration-200 ${isDropdownOpen ? 'rotate-180' : ''}`} fill="none" stroke="currentColor" viewBox="0 0 24 24">
                <path strokeLinecap="round" strokeLinejoin="round" strokeWidth={2} d="M19 9l-7 7-7-7" />
              </svg>
            </button>

            {isDropdownOpen && <div className="absolute right-0 mt-1 w-auto bg-white dark:bg-black border border-gray-200 dark:border-gray-700 rounded-lg overflow-hidden z-50">
                {resolvedVoices.map((voice, index) => <button key={index} onClick={() => {
    setSelectedVoice(index);
    setIsDropdownOpen(false);
  }} className={`w-full px-3 py-1.5 text-left text-xs hover:bg-gray-100 dark:hover:bg-gray-800 transition-colors flex items-center gap-2 ${index === selectedVoice ? 'bg-gray-100 dark:bg-gray-800 font-medium' : ''}`}>
                    {voice.id && <img src={`https://public-platform.r2.fish.audio/coverimage/${voice.id}`} alt={voice.name} className="w-5 h-5 rounded-full m-0 flex-shrink-0 object-cover" />}
                    <span className="flex-1 whitespace-nowrap">{voice.name}</span>
                  </button>)}
              </div>}
          </div> : <div className="justify-self-end" />}
      </div>

      {}
      <div className="px-3 py-1.5 bg-card">
        <audio ref={audioRef} src={currentVoice?.url} preload="metadata" />

        <div className="flex items-center gap-2">
          {}
          <button onClick={togglePlay} className="flex-shrink-0 w-6 h-6 flex items-center justify-center bg-gray-300 dark:bg-gray-600 text-gray-800 dark:text-gray-200 rounded-full hover:opacity-80 transition-opacity relative overflow-hidden" aria-label={isPlaying ? 'Pause' : 'Play'}>
            <div className="transition-transform duration-300 ease-in-out" style={{
    transform: isPlaying ? 'rotate(180deg)' : 'rotate(0deg)'
  }}>
              {isPlaying ? <svg className="w-3 h-3" fill="currentColor" viewBox="0 0 24 24">
                  <path d="M6 4h4v16H6V4zm8 0h4v16h-4V4z" />
                </svg> : <svg className="w-3 h-3 ml-0.5" fill="currentColor" viewBox="0 0 24 24">
                  <path d="M8 5v14l11-7z" />
                </svg>}
            </div>
          </button>

          {}
          <div className="flex-1 flex items-center gap-2">
            <span className="text-xs font-mono text-gray-500 dark:text-gray-400 min-w-[35px]">
              {formatTime(currentTime)}
            </span>

            <div className="flex-1 relative h-1 bg-gray-200 dark:bg-gray-700 rounded-full overflow-hidden">
              <div className="absolute top-0 left-0 h-full bg-gray-400 dark:bg-gray-500 transition-all duration-100" style={{
    width: `${duration ? currentTime / duration * 100 : 0}%`
  }} />
              <input type="range" min="0" max={duration || 0} value={currentTime} onChange={handleProgressChange} className="absolute top-0 left-0 w-full h-full opacity-0 cursor-pointer" />
            </div>
            <span className="text-xs font-mono text-gray-500 dark:text-gray-400 min-w-[35px]">
              {formatTime(duration)}
            </span>
          </div>
        </div>
      </div>
    </div>;
};

## Getting Started

To use fine-grained control, you can use either our SDK, API, or Playground.

SDK/API: We recommend disabling normalization by setting `"normalize": false` in the request body. This ensures that the API doesn't alter the intonation of control tags.

Playground: You can use V1.6 Control Model, without setting any other options.

<Note>
  Disabling normalization may reduce the stability of reading numbers, dates, and URLs. You'll need to handle these cases manually for best results.
</Note>

## Phoneme Control

Phoneme control allows you to specify exact pronunciations for words or characters. Currently, we support:

* CMU Arpabet (for English)
* Pinyin (for Chinese)

To use phoneme control, wrap the desired pronunciation in `<|phoneme_start|>` and `<|phoneme_end|>` tags. Each tag should contain a single word or character.

### English Example

Standard: "I am an engineer."
With phoneme control: "I am an `<|phoneme_start|>EH N JH AH N IH R<|phoneme_end|>`."

### Chinese Example

Standard: "我是一个工程师。"
With phoneme control: "我是一个`<|phoneme_start|>gong1<|phoneme_end|><|phoneme_start|>cheng2<|phoneme_end|><|phoneme_start|>shi1<|phoneme_end|>`。"

## Paralanguage

Paralanguage controls allow you to add natural speech elements and pauses to make the generated speech sound more human-like. There are two main types of controls:

### Pause Words

You can use common pause words like "um", "uh", "嗯", "啊" to control the rhythm of the speech.

### Special Effects

The following special effects can be added using parentheses:

| Effect           | Description        | First Available | Stage        |
| ---------------- | ------------------ | --------------- | ------------ |
| `(break)`        | Short pause        | V1.6            | Experimental |
| `(long-break)`   | Extended pause     | V1.6            | Experimental |
| `(breath)`       | Breathing sound    | V1.6            | Experimental |
| `(laugh)`        | Laughter sound     | V1.6            | Experimental |
| `(cough)`        | Coughing sound     | V1.6            | Experimental |
| `(lip-smacking)` | Lip smacking sound | V1.6            | Experimental |
| `(sigh)`         | Sighing sound      | V1.6            | Experimental |

<Warning>
  The effects `(laugh)`, `(cough)`, `(lip-smacking)`, and `(sigh)` are developing. You may need to repeat them multiple times for better results.
</Warning>

Example:
Standard: "I am an engineer."
With paralanguage: "I am, um, an (break) engineer."