✳ IskraAI

Audio to text: how to get an accurate transcript

The "Audio to text" tool transcribes an uploaded audio recording using a local speech recognition model running in the browser. Sound is not sent to external servers: processing takes place on your device. However, the quality of the text depends not only on the model, but also on how accurately you formulate the task. In this article we will look at exactly what to specify in the input to get a text suitable for further work, and how to check the result.

Open tool: Audio transcription ↗

Why formulate a task if there is a "Generate" button

It may seem that enough to upload a file and click the button. But the local speech recognition model does not know the context: it does not understand whether it is an interview with a doctor, a philosophy lecture or a budget meeting. Without explanations it will transcribe everything indiscriminately, including slips, repetitions and background noise, and special terms will be heard - often with errors.

A task in the input helps the model prioritize: which fragments are important, whether to preserve verbatim, how to format different speakers, what to do with unintelligible places. The more specific the instruction, the less time you will spend on manual editing.

In addition, the input allows you to set the output language if the recording is in a mixed language or you want to get a translation. But remember: the tool recognizes speech in the selected language, it does not translate. If another language is heard in the audio, the result will be inaccurate.

Bad task: "Make text". Good: "Transcribe an interview in Russian. Keep the interviewer and guest replicas, separating them by meaning. Technical terms: API, Kubernetes, CI/CD - write in Latin. Unintelligible places mark [unintelligible]."

What to specify in the input: context, purpose, format, limitations

Context is information about the recording: who is speaking, about what, in what setting. For example: "Webinar on financial planning for small business. One speaker, there are listener questions". This helps the model correctly interpret terms and structure.

Purpose determines how verbatim the text should be. For a meeting protocol it is enough to convey the essence, but for an interview exact formulations are important. Specify: "Need verbatim text for subsequent analysis" or "Enough concise summary with key theses."

Format sets the design: are time stamps needed, division into paragraphs, indication of speakers. For example: "Start each replica on a new line and mark: Speaker 1, Speaker 2". Limitations are special rules: how to write numbers, abbreviations, proper names, what to do with repetitions and filler words.

Context: "Biology lecture, the term 'mitocondria' is repeated often". Purpose: "Verbatim text for quoting". Format: "Paragraphs of 3-5 sentences, no time stamps". Limitations: "Latin names of species write in italics, if possible, otherwise - plain text. Numbers - digits."

Example of bad and good task: comparison

A bad task often consists of one word or a short phrase: "Transcribe". The model does not know what to do with noise, how to format replicas, whether to keep pauses. As a result you will get a solid text with errors in terms and without structure.

A good task contains four elements: context, purpose, format and limitations. For example: "This is a meeting recording of the project team in Russian. Participants: Anna, Boris, Victor. Purpose - protocol for mailing. Format: each replica on a new line, with name indication. Limitations: technical terms (Python, Docker) write in Latin; numbers - digits; repetitions and filler words omit."

The difference in the result is noticeable immediately: in the first case you spend time on editing, in the second - you get almost a ready document. At the same time, do not overload the input: too long an instruction can confuse the model. Optimal - 3-5 sentences.

Bad: "Make text from audio". Good: "Transcribe audio in Russian. This is an interview with a developer. Keep questions and answers, separating them with an empty line. Technical terms: JavaScript, React, API - Latin. Unintelligible fragments mark [nrzb]."

How to check the transcription result

After generation you will get text in a separate panel. First of all check key moments: names, numbers, terms. The local model may make mistakes in homophones (e.g. "lug" and "onion") and rare words. Compare them with audio if critical.

Pay attention to structure: if you asked to separate replicas, make sure the model did it. Check that no fragments are missed - sometimes the model "swallows" quiet speech or overlapping voices. If there were special rules in the task (e.g. numbers as digits), check their observance.

The tool does not save history automatically, so immediately copy or download the text in TXT. If the result is unsatisfactory, try to clarify the task and generate again. Remember that queue and model availability may vary, and responses may contain errors.

After generation you see: "Speaker 1: We discussed API. Speaker 2: Yes, but need to check Docker". Check that names and terms are written correctly, replicas are separated, there are no omissions.

Tool limitations and typical errors

The tool works only with audio files up to 20 MB and duration up to 5 minutes. If the recording is longer, split it into parts. Upload of WAV, MP3 and other formats is supported, but not more than 20 MB. Video files are not accepted.

The model does not perform translation, does not automatically create SRT subtitles (although you can request time stamps in the text), does not batch process and does not save results. Export is possible only in TXT. No integrations, registration and premium plan.

Do not expect perfect accuracy: errors are possible in noisy environment, strong accent or poor quality recording. The tool is not intended for legally significant transcription without subsequent verification. If you work with confidential data, remember that processing is local, but responsibility for keeping the secret lies with you.

If audio lasts 7 minutes, cut it to 5 minutes or split into two files. If there are three speakers in the recording, indicate this in the task, but the model may not distinguish them without clear pauses.

Practical recommendations for accurate transcription

Before uploading make sure the audio is sufficiently clear. Remove unnecessary noise if possible. The better the quality, the higher the accuracy. If the recording contains music or background noise, the model may make more mistakes.

Formulate the task briefly but capaciously. Use the template: "This [type of recording] in [language]. Purpose - [purpose]. Format - [format]. Limitations - [limitations]". So you will not forget anything.

If the result did not please, do not change everything immediately - try to add one clarification. For example, if terms are written with errors, add a list of terms in the task. If replicas are not separated, specify how exactly to mark them.

Template: "This podcast in Russian, two hosts. Purpose - text for publication. Format: replicas with names, paragraphs. Limitations: proper names - with capital letter, numbers digits, laughter and pauses omit."

An exact task for the "Audio to text" tool is not a formality, but a way to save time on editing. Specify context, purpose, format and limitations, check the result and remember the limitations: length up to 5 minutes, TXT only, local processing. By following these recommendations, you will get quality text that can be used immediately.

Open tool: Audio transcription ↗

Interface translations are machine-assisted and may need refinement.