Use cases

Bangla AI voice for teachers: make narration for an online lesson

Create a short lesson voiceover, check terminology, correct a section, and combine the audio with your slides.

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Kontho AIUpdated
2 min read
In this guide

Start an online lesson with one concept, one example, and one exercise. You do not need to generate an entire chapter first. Kontho supports ready-made voices and website-based own-voice cloning; try the teaching delivery and listen before choosing.

From one concept to a lesson: Finish one short lesson and ask learners for feedback.
From one concept to a lesson: Finish one short lesson and ask learners for feedback.

Write a learning objective

For a lesson on fractions, the goal might be understanding that one quarter is one of four equal parts. A short Bangla example is:

“একটি রুটি সমান চার ভাগ করা হলো। আপনি তার এক ভাগ নিলেন। পুরো রুটির তুলনায় আপনার অংশ এক-চতুর্থাংশ। দুই ভাগ নিলে কত অংশ হবে?”

Adapt the example to your class. The teacher remains responsible for checking educational accuracy.

Produce the narration

  1. Write short paragraphs for individual slides or concepts.
  2. Mark English terminology, numbers, and formulas.
  3. Choose a ready-made voice or create your own after reviewing consent and retention conditions.
  4. Test a short passage with the difficult words.
  5. Correct pronunciation, meaning, and pacing before generating the rest.
  6. Export an authorized file, place it with slides, and review audio and visuals together.

Keeping slide sections separate can make corrections easier. Listen for volume, pauses, and voice continuity when joining them. Regenerated audio may have a different duration.

Maintain a small glossary of successful spellings for your subject using the pronunciation guide.

Budget and keep your files

Fast speech costs 1 credit per second; High quality costs 2. Writing requests and additional generations can add charges. Free accounts can claim one download of up to one minute; other downloads require a purchase. Generated audio is retained for 30 days, so save your lesson files.

Read the cloning guide and cost explanation. Make one complete lesson and seek learner feedback before producing the whole course.

Listen to the examples

For a storytelling lesson, listen to this short sample of Ruma’s Barishal ready-made voice. Consider whether the vocabulary, pace, and pauses suit your learners. This is not the fractions lesson above or a clone of a teacher’s voice.

Ruma · Ready-made voice · High quality · 11.7 seconds

Transcript (Bangla): এক গেরামে এক বুড়ি থাকত। রোজ হেন্দাকালে হেয় নদীর ঘাটে বইয়া নাতি-নাতকুরগো রাজা-রানির কেচ্ছা হুনাইত, আর হগলতে চুপ কইরা হুনত।