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

# Professional Voice Cloning

> How to create a high-quality professional voice clone for use with your telli agent.

This guide explains how to create a high-quality professional voice clone. Follow each step carefully to ensure optimal results.

## Recording Requirements

|                      |                                                                                              |
| :------------------- | :------------------------------------------------------------------------------------------- |
| **Recording Length** | 60–90 minutes of continuous speech                                                           |
| **Content**          | Natural, live monologue about any topic + reading script and characters                      |
| **Speaker**          | Only one speaker no interruptions or overlapping voices                                      |
| **Audio Quality**    | Clear, consistent, no background noise or echo. Any setup including newer smartphones works. |
| **Environment**      | Quiet space with a microphone                                                                |
| **File Format**      | `.mp3` or `.wav`                                                                             |
| **Submission**       | Upload to your dedicated Slack channel. If you don't have one, contact the team.             |

<Steps>
  <Step title="Recording Environment">
    <Warning>
      Your recording environment has a significant impact on voice clone quality. Choose your setup carefully.
    </Warning>

    **Recommended setups:**

    * Phone booth
    * Meeting room
    * Sound-treated space
  </Step>

  <Step title="Minimum Checklist">
    Before you start recording, confirm the following:

    * At least 60 minutes of recording
    * Only one speaker throughout
    * Consistent audio quality
    * File format is `.mp3` or `.wav`
  </Step>

  <Step title="Conversational Recording">
    **Duration:** \~50 minutes

    Record natural, unscripted speech. It doesn't matter what you say just keep it natural and tell stories. Do not read from a script.

    **Suggested topics:**

    * Vacation experiences
    * Childhood and upbringing
    * Food and preferences
    * Hobbies
    * Daily routines

    <Warning>
      Try to talk about positive experiences rather than negative ones. This strongly affects the tone and friendliness of the resulting voice.
    </Warning>
  </Step>

  <Step title="Script Recording">
    This section ensures pronunciation consistency and structured speech coverage.

    **General instructions:**

    * Speak only the **agent's lines**
    * Pause \~1 second after each line
    * Read customer text silently do not speak it aloud
    * Maintain a **friendly, professional tone**

    <AccordionGroup>
      <Accordion title="Part A Phone Conversation Script">
        <Steps>
          <Step title="">
            **Agent:**
            "Good day, this is Anna Weber from Müller Immobilien GmbH. Am I speaking with Mr. Mustermann?"

            *(Pause)*
          </Step>

          <Step title="">
            **Agent:**
            "Exactly. A few days ago, you showed interest via our online listing for the 3-room apartment in Prenzlauer Berg. I wanted to ask if you would have time to schedule an appointment?"

            *(Pause)*
          </Step>

          <Step title="">
            **Agent:**
            "Great. I still have appointments this week on Wednesday at 4 p.m. or on Friday at 10 a.m. Would either of those times work for you?"

            *(Pause)*
          </Step>

          <Step title="">
            **Agent:**
            "Friday at 10 a.m. is currently best, because there are more viewings scheduled afterward. If you prefer, we can move the appointment to 11 a.m. – would that be okay?"

            *(Pause)*
          </Step>

          <Step title="">
            **Agent:**
            "Great, then the appointment is set for Friday, June 6 at 11 a.m. The address is Schönhauser Allee 45, Prenzlauer Berg. I'll send you a confirmation by email shortly. Do you have any other questions about the apartment?"

            *(Pause)*
          </Step>

          <Step title="">
            **Agent:**
            "The monthly utility costs are approximately 250 euros, including heating and water supply. There isn't a private parking space in the building, but there's a parking garage on the street, where we can help you arrange a spot if you like. Is that okay for you?"

            *(Pause)*
          </Step>

          <Step title="">
            **Agent:**
            "The deposit amounts to one month's rent. Move-in could be as early as July 1st, if everything works out and you decide to proceed. I'll summarize all of this in the email. If anything is still unclear afterward, you're welcome to call me anytime."

            *(Pause)*
          </Step>

          <Step title="">
            **Agent:**
            "You're very welcome. See you Friday, Mr. Mustermann. Have a nice day!"

            *(Pause)*
          </Step>
        </Steps>
      </Accordion>

      <Accordion title="Part B Standard Words & Phrases">
        **Alphabet**

        * "A … B … C"
        * "A as in Alpha … Z as in Zulu"

        *Tone: Friendly*

        ***

        **Number Sequences**

        * 0 to 30
        * "1,234,567"
        * "4,999.99 €"

        *Say once slowly and clearly, once naturally.*

        ***

        **Date & Time**

        * "May 28, 2025, 4:30 p.m."

        *Say once slowly and clearly, once naturally.*

        ***

        **Phone & ZIP Codes**

        * "+49 30 8899 1122"
        * "0800 123 45 67"
        * "10115"

        *Say once slowly and clearly, once naturally.*

        ***

        **Special Characters**

        | Symbol | Say        |
        | :----- | :--------- |
        | @      | at         |
        | #      | hashtag    |
        | /      | slash      |
        | %      | percent    |
        | €      | euro       |
        | &      | and        |
        | -      | dash       |
        | \_     | underscore |
      </Accordion>
    </AccordionGroup>
  </Step>

  <Step title="Submission">
    **Checklist before upload:**

    * Audio is clear and consistent
    * No interruptions or background noise
    * Full duration completed
    * File is exported as `.mp3` or `.wav`

    <Warning>
      Try to cut out long pauses in the recording. Agents using the voice can mirror them, which creates unnatural silences during calls.
    </Warning>

    **Upload:** Submit the file to your dedicated channel of communication.
  </Step>
</Steps>