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What is AI Voice? Complete Guide for Thai Businesses 2025

· 6 min read
Kobkrit Viriyayudhakorn
Kobkrit Viriyayudhakorn
CEO @ iApp Technology

AI Voice is transforming how we communicate and do business. From converting speech to text to AI voice generation that sounds like real humans, this article will introduce you to all types of AI voice technology and point you to tools that support Thai.

What is AI Voice?​

AI Voice is artificial intelligence technology related to audio processing, divided into 2 main types:

  1. Speech to Text (STT) - Convert spoken audio to text
  2. Text to Speech (TTS) - Convert text to spoken audio

iApp Speech Technology - Speech to Text and Text to Speech

Types of AI Voice​

1. Speech to Text (STT) - Convert Speech to Text​

Speech to Text or Automatic Speech Recognition (ASR) is technology that converts speech to text automatically. Used for:

  • Meeting Transcription - Meeting Notes
  • Video Subtitles - Video Captioning
  • Voice Search - Search by voice
  • Dictation - Type by voice

Speech to Text Usage Example​

import requests

# Convert speech to text with iApp ASR Pro
url = "https://api.iapp.co.th/v3/store/speech/speech-to-text/pro"
headers = {"apikey": "YOUR_API_KEY"}
files = {"file": open("meeting.mp3", "rb")}
data = {"chunk_size": "7"}

response = requests.post(url, headers=headers, files=files, data=data)
print(response.json()["output"][0]["text"])
# Output: "Hello, today we will discuss..."

2. Text to Speech (TTS) - Convert Text to Speech​

Text to Speech is technology that converts text to natural-sounding speech. Used for:

  • AI Voice Narration - Video Narration
  • Audiobook - Audio books
  • IVR System - Automated response system
  • Voice Assistant - Voice assistants

Text to Speech Usage Example​

import requests

# Convert text to speech with iApp TTS V2 (Kaitom Voice)
url = "https://api.iapp.co.th/v3/store/speech/text-to-speech/kaitom"
headers = {"apikey": "YOUR_API_KEY"}
data = {
    "text": "Hello, this is Thai AI voice",
    "language": "TH"  # or "TH_MIX_EN" for Thai-English mixed text
}

response = requests.post(url, headers=headers, data=data)
with open("output.wav", "wb") as f:
    f.write(response.content)

3. Voice Cloning​

Voice Cloning is technology that can clone a real person's voice to create AI voice that sounds like that person. Used for:

  • Creating unique brand voice
  • Preserving voices of important people
  • Creating Voice Avatars
Caution

Voice Cloning requires permission from the voice owner and should not be used illegally.

iApp AI Voice Tools​

Speech to Text​

Measured on the Common Voice 17.0 Thai test set: 11,042 samples the models had not seen.

ModelWords correctCharacters correctResponse timePrice
iApp ASR Base85.48% (word error rate 14.52%)94.13%0.3 s typical1 IC/minute
iApp ASR Pro91.99% (word error rate 8.01%)97.81%slower than Base2 IC/minute

Text to Speech​

iApp TTS reads Thai and mixed Thai-English text in a natural Thai voice at 1 IC per 400 characters.

Why Choose iApp AI Voice​

1. Measured Thai Accuracy​

On the Common Voice 17.0 Thai test set, iApp ASR Pro gets 91.99% of words right (word error rate 8.01%) and 97.81% of characters right. The Base model gets 85.48% of words right (word error rate 14.52%).

2. Processing Speed​

The Base model answers in 0.3 s in typical use. The Pro model is slower than Base; the extra time buys its higher accuracy.

3. Affordable Pricing​

  • Start free with 60 credits
  • Transcribe 60 minutes free
  • No credit card required

4. Developed by Thais for Thais​

Understands Thai context, supports dialects, and has Thai-speaking support team

Use Cases: AI Voice for Business​

1. Content Creator & YouTuber​

Problem: Must type subtitles manually, takes too long

Solution: Use iApp Speech to Text for automatic transcription

Before: Type 1 hour of subtitles = 4-6 hours of work
After: Automatic transcription = 5 minutes + minor edits

2. Podcast Producer​

Problem: Want to create Blog Posts from Podcast Episodes

Solution: Transcribe Podcast to text then write Blog

3. E-Learning Platform​

Problem: Must hire voice actors for courses

Solution: Use iApp Text to Speech for automatic narration

Before: Hire voice actor = 5,000-10,000 THB/hour
After: AI voice = ~50-100 THB/hour

4. Call Center​

Problem: Need to analyze customer conversations

Solution: Transcribe Call Center to text for Analytics

5. News & Media​

Problem: Must transcribe interviews to text

Solution: Automatic interview transcription saves time

Getting Started with AI Voice​

Step 1: Sign Up​

  1. Go to iapp.co.th/register
  2. Fill in registration details
  3. Receive 60 IC credits immediately

Step 2: Choose Your Tool​

Speech to Text​

Need to convert speech to text:

Text to Speech​

Need to convert text to speech:

  • Text to Speech API - For developers
  • Supports Kaitom voice (male)
  • Supports Thai and Thai-English mixed

Step 3: Get API Key​

  1. Login to the system
  2. Go to Dashboard page
  3. Copy API Key

Summary​

AI Voice is transforming how Thai businesses work:

  • Speech to Text - Save transcription time
  • AI Voice Generation - Reduce content production costs
  • Voice Analytics - Deep voice data analysis

iApp Technology provides AI Voice that:

  • ✓ 91.99% of Thai words correct (Pro model, Common Voice 17.0 Thai test set)
  • ✓ 0.3 s typical response (Base model)
  • ✓ Start free with 60 credits
  • ✓ Developed by Thais

Get Started Now​

Ready to try AI Voice for free?

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