Bengali audio to text: an honest view
The speech model has far less Bengali training data than it has for English, Spanish or German. The result is a rough first draft that needs a full review, not a finished transcript. Even on a good recording you should expect to correct words in most paragraphs, and names, places and technical terms almost always need fixing.
The best results come from one clear speaker close to the microphone in a quiet room, such as a lecture, a sermon recorded with a lapel mic or a single person dictating notes. Phone calls, family gatherings, several people talking at once, and speech with music underneath give much weaker drafts. For those, the transcript is mainly useful for finding where things were said in the audio.
Reviewing a draft is still faster than typing Bengali from scratch. Play the file and follow the highlighted line, click any line to hear it again, and correct the text in place. Anything important, such as a quote you will publish or a statement used as evidence, should be checked by a Bengali speaker against the audio.
Bengali script in the transcript
The transcript is written in Bengali script (বাংলা লিপি). Several letters in Bengali sound the same in normal speech, so the model has to guess the spelling from context, and it does not always guess right. These are the points to check while you review.
- Letters pronounced alike, such as শ, ষ and স, or ন and ণ, or জ and য, can be swapped in a word.
- Conjunct consonants (যুক্তাক্ষর) such as ক্ষ or ন্ত may be written differently from the standard spelling.
- Short and long vowel signs (ি and ী, ু and ূ) are easy to mix up because speech rarely marks the difference.
- English words may stay in Latin letters or be written in Bengali script, sometimes both ways in one file.
- Numbers can appear as Bengali digits, Western digits or words.
Bangladesh, West Bengal and regional speech
Choose Bengali for recordings from both Bangladesh and West Bengal. Both use the same written standard, and the transcript is written in it. Pronunciation and some everyday vocabulary differ between Dhaka and Kolkata speech, and the model can handle either, but expect the colloquial words of each region to need correcting more often than standard ones.
Strong regional speech is much harder. Sylheti and Chittagonian differ a lot from standard Bengali, and many people treat them as separate languages. The model has no setting for them, so a Sylheti or Chittagonian recording will come out as a weak approximation in standard Bengali spelling. Plan to transcribe those mostly by ear, using the timestamps to navigate.
Language setting and Bengali-English mixing
This page preselects Bengali in the upload box. Auto-detect listens to the start of a file and can misjudge short voice notes or clips that open in English. It can also label Bengali as a nearby language such as Assamese or Hindi, which changes the script of the whole transcript. With Bengali selected, that guess is skipped.
Most Bengali speakers mix in English words, and in offices, universities and on YouTube whole phrases often switch to English. The transcript handles common English words, though their spelling can vary. If a recording is mostly English with some Bengali, choose English for that file instead. The language is picked per file, so a batch of mixed recordings can use different settings.
Who uses Bengali transcription and what to do next
People bring research interviews from Bangladesh and India, NGO field recordings, journalism interviews, lectures, religious talks, podcasts and YouTube videos that need Bengali subtitles. Families in the UK, the US, Canada and the Gulf upload recordings of parents and grandparents to keep the stories in writing. WhatsApp voice notes, phone recordings and MP4 videos upload as they are, with no conversion step.
TXT, DOCX, PDF, SRT, VTT and CSV exports keep the Bengali script as written. To read the content in English, open the Google Translate link on the transcript, or use the AI prompt export to ask ChatGPT, Claude or Gemini for a translation, summary or notes. Speaker labels are available on paid plans or with a Minute Pack. Your files are never used to train AI models.