Bland AI Voice Modulation Concise Guide

1. Notation for Modulation in Scripts

Use clear, bracketed cues or ALL CAPS to direct the AI’s delivery:

  • [pause Xs] — Insert a pause of X seconds
"That's just \$29 a month [pause 0.8s]."
  • [upward inflection] — End with a rising tone (for questions, excitement)
"Our service is GUARANTEED [upward inflection]."
  • [downward inflection] — End with a falling tone (for authority, finality)
"This offer ends Friday [downward inflection]."
  • [lower pitch] / [higher pitch] — Adjust vocal pitch for authority or urgency
"We're here to help [lower pitch]."
  • [slower] / [faster] — Control pacing for clarity or urgency
"Let's walk through your options [slower]."
  • [cheerful] / [empathetic] / [urgent] — Set emotional tone
"Great news! [cheerful] You qualify for a discount."
  • [emphasize: word/phrase] — Add stress to key points
"This is a LIMITED TIME offer [emphasize: limited time]."

2. Common Modulation Cues and When to Use Them

Cue Use Case Example Effect
[pause 0.5s] After price or key info Lets info sink in
[upward inflection] On questions, offers, or CTAs Invites response, excitement
[downward inflection] On closing, price, or guarantees Authority, confidence
[lower pitch] On objections, price discussions Trust, calm
[higher pitch] On emergencies, urgency Energy, alertness
[slower] On complex info, legal, or price Clarity, seriousness
[faster] On greetings, excitement, urgency Energy, engagement
[cheerful] On good news, welcomes Warmth, positivity
[empathetic] On complaints, objections Builds rapport
[urgent] On emergencies, deadlines Drives action
[emphasize: word] On discounts, deadlines, guarantees Focuses attention

3. Technical Parameters and API Tips

  • Response Timing:
    • Adjust “patience” (API: 50–200) for how long AI waits before responding.
      • 50: Fast, back-and-forth
      • 100: Natural pace (default)
      • 200: Patient, allows for long pauses
  • Model Selection:
    • base: Best for custom scripting and modulation
    • turbo: Fastest, most natural, but fewer custom features
  • Randomness (Temperature):
    • 0 = Deterministic, 1 = More varied/creative
  • Pathways:
    • Use Pathway Generation to quickly build and test different modulation strategies

4. Pro Tips for Scripting in Bland AI

  • Always notate modulation cues in your script—Bland’s engine interprets these for more human-like delivery.
  • Test and iterate: Use Bland’s testing tool to hear how your cues sound and adjust for naturalness.
  • A/B test: Create multiple script versions (e.g., [cheerful] vs. [authoritative]) and compare conversion rates.
  • Combine cues:
"You're all set! [cheerful][pause 0.5s] Your appointment is confirmed for Friday [downward inflection]."
  • Emotional context:
"I understand that's frustrating [empathetic][slower]. Let's see what we can do [upward inflection]."

5. Sample Script Snippets

"Hi! This is [Company] [cheerful][faster]. I have great news about your account [pause 0.5s]."

"Your service is scheduled for tomorrow [downward inflection][slower]."

"Would you like to hear about our special offer? [upward inflection][pause 0.3s] It ends soon [urgent][emphasize: ends soon]."

6. Quick Reference Table

Modulation Cue Script Notation Example
Pause [pause 0.5s]
Upward Inflection [upward inflection]
Downward Inflection [downward inflection]
Lower Pitch [lower pitch]
Higher Pitch [higher pitch]
Slower [slower]
Faster [faster]
Cheerful [cheerful]
Empathetic [empathetic]
Urgent [urgent]
Emphasize [emphasize: word/phrase]

Keep this sheet handy when scripting in Bland AI. Test, listen, and iterate—modulation cues are your secret weapon for making AI sound truly human and persuasive!