Tts Director

TTS Director

Use this skill before calling Operate(resource="voice", operation="speech", input={ ... }) when the speech should sound performed rather than flat.

Core Mission

Turn the final spoken script into one executable TTS request:

• Preserve the user's words unless they asked for rewriting.
• For dialogue or role audio, first identify the speaker/role count and choose a distinct voiceId for each role before segmenting. Use availableVoicesForAgent from the generation context when present; call voice.list if the context does not provide enough voices.
• Identify the selected TTS model before designing controls. Use model from the request/context when present.
• For CosyVoice-family models such as cosyvoice-v3.5-plus, only invoke cosyvoice-ssml when the current task is already a video-director managed digital-human / VideoRetalk / asset-library talking-head video and the TTS is the approved character speech track. Outside that narrow flow, do not activate cosyvoice-ssml.
• For MiniMax-family models such as speech-2.8-turbo, split the script into meaningful performance beats and speaker turns, then assign each beat emotion, speed, pitch, punctuation, and pause markers.
• Submit one voice.speech call. Do not synthesize each segment manually.
• In the final user-facing response, present the merged finalAudio only. Do not list segment files as the result.

Model Branching

Before creating the final payload, classify the TTS model:

• CosyVoice branch: model name contains cosyvoice, especially cosyvoice-v3.5-plus; this branch may use cosyvoice-ssml only inside a digital-human / VideoRetalk video flow already owned by video-director.
• MiniMax branch: model name starts with speech- or contains minimax.
• Unknown model: keep controls conservative; prefer plain input plus prompt only if the provider is known to accept it.

This distinction is mandatory because the models support different controls:

• CosyVoice supports prompt and a limited SSML tag set. It does not support the MiniMax emotion field.
• MiniMax supports emotion, speed, pitch, MiniMax pause markers, and segments. It does not support CosyVoice prompt.
• The segments array is a media-runtime sequence feature, not a MiniMax-only capability. MiniMax uses it for emotion/speed/pitch segment controls. CosyVoice SSML segments are reserved for the digital-human / VideoRetalk flow.

If the selected model is CosyVoice and the task is not a video-director digital-human / VideoRetalk TTS substep, do not invoke cosyvoice-ssml. Keep the TTS payload conservative, or ask the user to move into the数字人 workflow if they need a character talking-head video. If the selected model is CosyVoice inside the approved digital-human flow, invoke cosyvoice-ssml once before building the final request. skills.invoke only activates instructions; it does not return SSML.

If the selected model is MiniMax, do not output SSML or prompt. Use the existing segments workflow.

When To Use

Use this skill for:

• short-video narration, self-media口播, product explanation, product seeding, review, livestream clip, or course voiceover
• ads, livestream welcome, product pitch, trailer voiceover, or CTA
• character lines, dialogue, or podcast-style voiceover
• any request that says 有感情、带情绪、有节奏、自然一点、像真人读、分段语气、慢一点、激昂一点
• any script where different paragraphs clearly need different emotional energy

Skip this skill for a tiny neutral sentence unless the user asks for tone control.

Output Contract

The final action must be exactly one voice.speech request.

Choose the payload shape from the selected TTS model.

CosyVoice Payload

For cosyvoice-v3.5-plus, activate cosyvoice-ssml before constructing SSML only when this TTS request is part of a video-director managed digital-human / VideoRetalk / asset-library talking-head video:

{
  "resource": "skills",
  "operation": "invoke",
  "input": { "name": "cosyvoice-ssml" }
}

Then submit the single voice.speech request you build from the activated skill rules. Use one request only; for long text, put multiple items in segments and let the media runtime merge them.

Short-text payload shape:

{
  "model": "cosyvoice-v3.5-plus",
  "voiceId": "voice_xxx",
  "input": "<speak rate=\"0.9\" pitch=\"0.95\" volume=\"60\">完整 SSML 文本</speak>",
  "prompt": "整体朗读风格提示，例如：温柔、平稳、有耐心。",
  "language_hints": ["zh"],
  "responseFormat": "mp3",
  "waitForCompletion": true
}

Long-text payload shape:

{
  "model": "cosyvoice-v3.5-plus",
  "voiceId": "voice_xxx",
  "segments": [
    {
      "input": "<speak rate=\"0.86\" pitch=\"0.94\" volume=\"54\">第一段 SSML。</speak>",
      "prompt": "平稳、克制、有画面感。",
      "pauseAfterSeconds": 0.4
    },
    {
      "input": "<speak rate=\"0.76\" pitch=\"0.86\" volume=\"46\">第二段 SSML。</speak>",
      "prompt": "悲伤、压低、声音更轻。",
      "pauseAfterSeconds": 0.8
    }
  ],
  "language_hints": ["zh"],
  "responseFormat": "mp3",
  "waitForCompletion": true
}

CosyVoice SSML construction rules live in cosyvoice-ssml, but that skill is reserved for digital-human / VideoRetalk video speech tracks. The short version for that narrow flow:

• Use only CosyVoice-supported tags: <speak>, <break/>, <sub>, <phoneme>, <soundEvent/>, <say-as>.
• Do not use <prosody>; CosyVoice rate, pitch, and volume are <speak> attributes.
• CosyVoice pitch is a positive 0.5-2 multiplier. Never copy MiniMax pitch values such as -2, -1, or 0 into CosyVoice SSML. Use values such as 0.86-0.96 for low/sad delivery, 0.96-1.04 for natural narration, and 1.04-1.16 for brighter delivery.
• CosyVoice rate is a positive 0.5-2 multiplier. Use values such as 0.76-0.92 for slow delivery, 0.92-1.04 for natural narration, and 1.04-1.16 for lively delivery.
• CosyVoice volume is a 0-100 scale, not 0-1. Use values such as 50-65 for normal narration and 38-52 for quiet narration; never use volume="0.8" or volume="1.0".
• Keep user wording intact inside text nodes unless rewriting was requested.
• Add prompt for voice style. For a single input, keep it global; for segments, write one concise prompt per segment.
• Multi-sentence digital-human / VideoRetalk speech tracks should use segments, not one giant SSML document.
• Use language_hints, for example ["zh"], when the script is mostly Chinese.

CosyVoice example:

{
  "model": "cosyvoice-v3.5-plus",
  "voiceId": "voice_xxx",
  "input": "<speak rate=\"0.9\" pitch=\"0.95\" volume=\"60\">今天，我们慢一点开始。<break time=\"500ms\"/>接下来，请注意这个重点。</speak>",
  "prompt": "请用温柔、平稳、有耐心的口播语气朗读。",
  "language_hints": ["zh"],
  "responseFormat": "mp3",
  "waitForCompletion": true
}

MiniMax Payload

Use plain input only when the text is short and has one stable mood. Use segments when there are multiple beats, paragraph changes, emotional shifts, dialogue turns, or long-form reading.

Required payload shape for multi-beat speech:

{
  "voiceId": "voice_xxx",
  "segments": [
    {
      "input": "第一段朗读文本。<#0.5#>",
      "voiceId": "voice_xxx",
      "emotion": "calm",
      "speed": 0.94,
      "pitch": 0,
      "pauseAfterSeconds": 0.4
    },
    {
      "input": "第二段朗读文本。",
      "voiceId": "voice_yyy",
      "emotion": "happy",
      "speed": 1.06,
      "pitch": 1
    }
  ],
  "title": "可读标题",
  "responseFormat": "mp3",
  "waitForCompletion": true
}

Do not put control instructions in the spoken text. The text may contain expressive punctuation, MiniMax markers such as <#0.6#>, (laughs), (sighs), or (breath) only when they should be performed.

For multi-role audio, each segment may override parent voiceId. Use one segment per speaker turn when the voice changes.

Performance Mapping

This mapping is for MiniMax emotion values. For CosyVoice, invoke cosyvoice-ssml only in the digital-human / VideoRetalk subflow; that skill translates delivery intent into CosyVoice-supported SSML rather than the emotion field.

Do not reuse the MiniMax pitch numbers below in CosyVoice. MiniMax pitch:-2..3 is a segment control scale; CosyVoice <speak pitch> is a positive multiplier in 0.5-2.

Choose controls from the text's rhetorical function, not from paragraph length.

• Calm setup / explanation: emotion:"calm", speed:0.92-1.02, pitch:0
• Smooth narration / connective lines: emotion:"fluent", speed:0.98-1.06, pitch:0
• Joy, invitation, light humor: emotion:"happy", speed:1.04-1.14, pitch:0..2
• Surprise or reveal: emotion:"surprised", speed:0.96-1.08, pitch:1..3
• Sorrow, nostalgia, regret: emotion:"sad", speed:0.82-0.95, pitch:-2..0
• Anger, urgency, challenge: emotion:"angry", speed:1.02-1.16, pitch:0..2
• Fear, suspense, uncertainty: emotion:"fearful", speed:0.86-1.0, pitch:-1..1
• Whispered aside: pass emotion:"whisper" or emotion:"whipser" only when the script explicitly calls for whispering.

Avoid flat defaults. A long expressive reading should not become many segments that all use fluent, speed:1.0, and no pauses.

Rhythm Rules

For CosyVoice inside a digital-human / VideoRetalk subflow, invoke cosyvoice-ssml, split long text into ordered SSML segments, and use CosyVoice-supported <break time="...ms"/>, <speak> attributes, <sub>, <phoneme>, <soundEvent/>, and <say-as>. For MiniMax, use <#0.4#> markers and segment boundary pauses as described below.

Use pauses as performance punctuation:

• <#0.25#> for a small beat inside a sentence.
• <#0.4#> or <#0.5#> after an image, contrast, or clause that should land.
• <#0.7#> or <#0.9#> before a major turn, refrain, punchline, or emotional drop.
• Avoid adding a pause after every punctuation mark.
• Do not exceed roughly 2-3 explicit pauses per short segment unless the form is poetry or dramatic reading.

Use structured boundary pauses for silence between generated clips:

• Use inline <#0.4#> markers inside input when the pause belongs to the spoken performance of that line.
• Use pauseAfterSeconds on a segment when the silence belongs between two turns, speakers, scenes, or paragraphs.
• Use pauseBeforeSeconds only when a segment needs a leading beat before the speaker starts.
• For dialogue, prefer pauseAfterSeconds: 0.2-0.5 after normal turns, 0.6-0.9 before emotional turns, and 1.0-1.5 for scene breaks.
• Do not create fake empty TTS segments just to add silence. The media runtime inserts silence during final merge from pauseBeforeSeconds / pauseAfterSeconds.

Recommended workflow for complex or multi-speaker audio:

1. Determine the selected TTS model and role count.
2. Select one distinct voiceId per role from available voices when multi-role audio is requested. Do not claim only one voice can be used unless voice.list confirms no alternative voice exists.
3. If using CosyVoice inside a digital-human / VideoRetalk subflow, invoke cosyvoice-ssml and build ordered SSML segments. Each segment must include final spoken text, a complete <speak rate pitch volume> SSML input, a segment-specific prompt, and boundary pause fields when needed. If multiple voices are required, put the chosen voiceId on each segment when available.
4. If using MiniMax, build ordered speaker-turn segments. Each segment must include final spoken text, the role's voiceId, punctuation, emotion, speed, optional pitch, and boundary pause fields.
5. Submit exactly one voice.speech request with waitForCompletion:true.

When the tool returns, use finalAudio.previewUrl or finalAudio.path as the playable result in the conversation. Segment files are intermediate implementation details and should not be shown as the main deliverable.

Punctuation As Delivery Control

TTS models are sensitive to punctuation. Use punctuation as part of the performance design, not just grammar.

You may adjust punctuation when it improves delivery, but preserve the user's wording and meaning. Do not over-decorate formal, factual, or classical text unless the desired reading is explicitly dramatic.

Common punctuation effects:

• ， keeps a phrase flowing with a light breath.
• 。 closes a thought with a firmer landing.
• 、 creates a quick list rhythm.
• ？ raises uncertainty, challenge, invitation, or rhetorical tension.
• ！ adds force, excitement, command, surprise, or emotional release.
• …… creates hesitation, trailing thought, suspense, grief, softness, or a held emotional beat.
• ～ softens, lengthens, teases, coaxes, or makes speech more playful and intimate.
• ： sets up a reveal, quote, or list.
• —— creates an inserted turn, interruption, dramatic shift, or held emphasis.
• ？！ combines shock and questioning; use sparingly.
• ！！ or ！！！ can intensify excitement or urgency, but should be rare and never used as a default.
• ？？ can express disbelief or playful challenge; avoid in serious narration unless intentional.

Examples:

• Warm invitation: 来，先听我说～<#0.4#>
• Surprise reveal: 你以为结束了吗？<#0.3#>还没有！
• Emotional hesitation: 我以为……<#0.5#>我真的以为不会再见到你。
• Energetic CTA: 现在就开始！！<#0.3#>
• Classical recitation should usually stay cleaner: prefer 。<#0.7#> or ，<#0.4#> over casual ～ unless the user wants modern expressive朗读.

When choosing between punctuation and MiniMax pause tags:

• Use punctuation to shape tone inside the spoken text.
• Use <#0.4#> style markers for exact timing.
• Combine them only when the emotional beat needs both tone and duration, for example 真的值得吗？<#0.6#>.

Segment size guidance:

• For narration: usually 1-3 sentences per segment.
• For poetry: split by couplet, refrain, or emotional turn.
• For ads and口播: split by hook, value, proof, offer, CTA.
• For dialogue: split by speaker and intention.

Poetry And Classical Text

For poetry, design a rising and falling arc.

• Opening image: slower, calm or fluent, with a landing pause.
• Philosophical turn: slower, calm or sad if reflective.
• Refrain or invitation: stronger pace, fluent or happy/surprised, with clearer pauses.
• Climax: faster or more forceful, often happy, surprised, or angry depending on text.
• Ending release: slow down slightly and leave a final pause.

Keep the original text intact. Insert only pause markers that improve recitation.

Self Check Before TTS

Before calling voice.speech, verify:

• The payload contains the final spoken words, not analysis or instructions.
• The model branch is correct:
  • CosyVoice digital-human / VideoRetalk only: cosyvoice-ssml was invoked; only extremely short neutral text may use one SSML input; multi-sentence expressive text uses segments, each with SSML input and segment prompt; no emotion.
  • MiniMax: segments allowed, emotion allowed, no SSML, no prompt.
• For CosyVoice digital-human / VideoRetalk speech tracks, every segment has a chosen tone and that tone is reflected with both CosyVoice-supported SSML and segment prompt.
• For MiniMax, multi-beat speech uses one segments array, not repeated tool calls.
• Each segment or SSML sentence has a reason for its emotion/tone, speed/rate, punctuation, and pauses.
• The first and last segments are not accidentally identical in energy when the script has an arc.
• Expressive punctuation is intentional; there is no accidental blanket ！！ / ～～ / …… across the whole script.
• waitForCompletion is true when the user expects the finished audio now.