Dialogue Audio

Create realistic multi-speaker dialogue with Dia TTS via inference.sh CLI.

Quick Start

Requires inference.sh CLI (infsh ). Get installation instructions: npx skills add inference-sh/skills@agent-tools

infsh login

Two-speaker conversation

infsh app run falai/dia-tts --input '{ "prompt": "[S1] Have you tried the new feature yet? [S2] Not yet, but I heard it saves a ton of time. [S1] It really does. I cut my workflow in half. [S2] Okay, I am definitely trying it today." }'

Speaker Tags

Dia TTS uses [S1] and [S2] to distinguish two speakers.

Tag Role Voice

[S1]

Speaker 1 Automatically assigned voice A

[S2]

Speaker 2 Automatically assigned voice B

Rules:

• Always start each speaker turn with the tag

• Tags must be uppercase: [S1] not [s1]

• Maximum 2 speakers per generation

• Each speaker maintains consistent voice within a session

Emotion & Expression Control

Dia TTS interprets punctuation and non-speech cues for emotional delivery.

Punctuation Effects

Punctuation Effect Example

.

Neutral, declarative, medium pause "This is important."

!

Emphasis, excitement, energy "This is amazing!"

?

Rising intonation, questioning "Are you sure about that?"

...

Hesitation, trailing off, long pause "I thought it would work... but it didn't."

,

Short breath pause "First, we analyze. Then, we act."

— or --

Interruption or pivot "I was going to say — never mind."

Non-Speech Sounds

Dia TTS supports parenthetical sound descriptions:

(laughs) — laughter (sighs) — exasperation or relief (clears throat) — attention-getting pause (whispers) — softer delivery (gasps) — surprise

Examples with Emotion

Excited conversation

infsh app run falai/dia-tts --input '{ "prompt": "[S1] Guess what happened today! [S2] What? Tell me! [S1] We hit ten thousand users! [S2] (gasps) No way! That is incredible! [S1] I know... I still cannot believe it." }'

Serious/thoughtful dialogue

infsh app run falai/dia-tts --input '{ "prompt": "[S1] We need to talk about the timeline. [S2] (sighs) I know. It is tight. [S1] Can we cut anything from the scope? [S2] Maybe... but it would mean dropping the analytics dashboard. [S1] That is a tough trade-off." }'

Teaching/explaining

infsh app run falai/dia-tts --input '{ "prompt": "[S1] So how does it actually work? [S2] Great question. Think of it like a pipeline. Data comes in on one end, gets processed in the middle, and comes out transformed on the other side. [S1] Like an assembly line? [S2] Exactly! Each step adds something." }'

Pacing Control

Pause Hierarchy

Technique Pause Length Use For

Comma ,

~0.3 seconds Between clauses, list items

Period .

~0.5 seconds Between sentences

Ellipsis ...

~1.0 seconds Dramatic pause, thinking, hesitation

New speaker tag ~0.3 seconds Natural turn-taking gap

Speed Control

• Shorter sentences = faster perceived pace

• Longer sentences with commas = measured, thoughtful pace

• Questions followed by answers = engaging back-and-forth rhythm

Fast-paced, energetic

infsh app run falai/dia-tts --input '{ "prompt": "[S1] Ready? [S2] Ready. [S1] Let us go! Three features. Five minutes. [S2] Hit it! [S1] Feature one: real-time sync." }'

Slow, contemplative

infsh app run falai/dia-tts --input '{ "prompt": "[S1] I have been thinking about this for a while... and I think we need to change direction. [S2] What do you mean? [S1] The market has shifted. What worked last year... is not working now." }'

Conversation Structure Patterns

Interview Format

infsh app run falai/dia-tts --input '{ "prompt": "[S1] Welcome to the show. Today we have a special guest. Tell us about yourself. [S2] Thanks for having me! I am a product designer, and I have been building tools for creators for about ten years. [S1] What got you started in design? [S2] Honestly? I was terrible at coding but loved making things look good. (laughs) So design was the natural path." }'

Tutorial / Explainer

infsh app run falai/dia-tts --input '{ "prompt": "[S1] Can you walk me through the setup process? [S2] Sure. Step one, install the CLI. It takes about thirty seconds. [S1] And then? [S2] Step two, run the login command. It will open your browser for authentication. [S1] That sounds simple. [S2] It is! Step three, you are ready to run your first app." }'

Debate / Discussion

infsh app run falai/dia-tts --input '{ "prompt": "[S1] I think we should go with option A. It is faster to implement. [S2] But option B scales better long-term. [S1] Sure, but we need something shipping this quarter. [S2] Fair point... what if we do A now with a migration path to B? [S1] That could work. Let us prototype it." }'

Post-Production Tips

Volume Normalization

Both speakers should be at consistent volume. If one is louder:

Merge with balanced audio

infsh app run infsh/video-audio-merger --input '{ "video": "talking-head.mp4", "audio": "dialogue.mp3", "audio_volume": 1.0 }'

Adding Background/Music

Merge dialogue with background music

infsh app run infsh/media-merger --input '{ "media": ["dialogue.mp3", "background-music.mp3"] }'

Segmenting Long Conversations

For conversations longer than ~30 seconds, generate in segments:

Segment 1: Introduction

infsh app run falai/dia-tts --input '{ "prompt": "[S1] Welcome back to another episode..." }'

Segment 2: Main content

infsh app run falai/dia-tts --input '{ "prompt": "[S1] So let us dive into today s topic..." }'

Segment 3: Wrap-up

infsh app run falai/dia-tts --input '{ "prompt": "[S1] Great conversation today..." }'

Merge all segments

infsh app run infsh/media-merger --input '{ "media": ["segment1.mp3", "segment2.mp3", "segment3.mp3"] }'

Script Writing Tips

Do Don't

Write how people talk Write how people write

Short sentences (< 15 words) Long academic sentences

Contractions ("can't", "won't") Formal ("cannot", "will not")

Natural fillers ("So,", "Well,") Every sentence perfectly formed

Vary sentence length All sentences same length

Include reactions ("Exactly!", "Hmm.") One-sided monologues

Read it aloud before generating Assume it sounds right

Common Mistakes

Mistake Problem Fix

Monologues longer than 3 sentences Sounds like a lecture, not conversation Break into exchanges

No emotional variation Flat, robotic delivery Use punctuation and non-speech cues

Missing speaker tags Voices don't alternate Start every turn with [S1] or [S2]

Formal written language Sounds unnatural spoken Use contractions, short sentences

No pauses between topics Feels rushed Use ... or scene breaks

All same energy level Monotonous Vary between high/low energy moments

Related Skills

npx skills add inference-sh/skills@text-to-speech npx skills add inference-sh/skills@ai-podcast-creation npx skills add inference-sh/skills@ai-avatar-video

Browse all apps: infsh app list