Transcribe Audio to Text with AI Accuracy

How Audio Transcription Works

Exactum uses a state-of-the-art neural speech recognition engine trained on millions of hours of audio data. When you upload an audio file, the AI processes the waveform to identify speech patterns, phonemes, and word boundaries with 99%+ accuracy. Whether you need to transcribe audio to text or convert sound to text from any recording, Exactum delivers results in seconds. The entire pipeline runs on high-performance infrastructure so even long recordings finish quickly.

The transcription engine handles background noise, cross-talk, accents, and varying audio quality. Sound to text transcription works seamlessly regardless of your source — phone recordings, studio microphones, or ambient captures. It automatically adds punctuation, capitalizes proper nouns, and formats numbers and dates. For multi-speaker recordings, diarization technology identifies and labels each speaker separately. The engine continuously improves through ongoing model updates that incorporate the latest advances in neural speech processing.

After transcription, Exactum's AI analysis layer generates summaries at three detail levels, extracts key points and action items, creates timestamped chapters, and performs sentiment analysis. You can transcribe sound to text and then repurpose it into blog posts, social media threads, and more. Add custom vocabulary for technical terms, brand names, and industry jargon to improve accuracy. The analysis runs automatically so you receive a fully annotated transcript without any extra steps.

Supported Audio Formats

Exactum supports 100+ audio formats thanks to the same speech engine trusted by NASA and Spotify. Common formats include MP3, WAV, M4A, FLAC, AAC, OGG, Opus, WMA, AIFF, WebM, AMR, and PCM. Whether you're uploading a podcast, voice memo, phone recording, or studio master — just drag and drop. No file conversion needed.

For best transcription accuracy, use WAV or FLAC files with a sample rate of 16kHz or higher. However, Exactum's AI handles compressed formats like MP3 and M4A with minimal accuracy loss. Files can be up to 2 GB on paid plans, supporting recordings of any length from short voice memos to multi-hour interviews. The system automatically detects the codec and sample rate, adjusting its processing pipeline for optimal results regardless of the input format.

Accuracy and Language Support

Exactum delivers 99%+ transcription accuracy on clear recordings thanks to a neural model trained on diverse speech data. The engine recognizes 47 languages with automatic language detection, so you do not need to specify the language before uploading. It adapts to regional accents, dialects, and even code-switching between languages within the same recording.

Background noise is one of the most common challenges in audio transcription. Exactum's noise-robust architecture filters out ambient sounds, keyboard clicks, air conditioning hum, and street noise without degrading speech clarity. The result is clean, readable text even from recordings made in imperfect environments like coffee shops or open-plan offices.

Custom vocabulary lets you add specialized terms before transcription begins. Medical professionals can add drug names and anatomical terms, lawyers can add case citations and legal Latin, and engineers can add product names and technical acronyms. This dramatically improves recognition of words that fall outside everyday language and ensures your transcript reads accurately the first time.

The engine also handles overlapping speech and rapid turn-taking common in group conversations. Rather than dropping words when speakers talk over each other, the AI uses contextual clues to reconstruct what each person said and attribute it to the correct speaker label.

Professional Transcription Workflow

Exactum is built for professionals who transcribe audio regularly. The dashboard gives you a centralized workspace where every transcript is stored, searchable, and organized. You can filter by date, duration, or speaker count to quickly locate a specific recording in your library.

After transcription, you can edit the text directly in the dashboard. Click any word to jump to that moment in the audio and verify what was said. This click-to-seek feature turns editing from a tedious back-and-forth into a smooth, linear process that saves significant time on review passes.

Export options cover every common format. Download as TXT for plain text, SRT or VTT for subtitles, PDF for printable documents, DOCX for Word editing, or Markdown for Notion and Obsidian. You can also publish directly to WordPress or Ghost, or sync to Notion with a single click.

For teams that need to share transcripts, Exactum integrates with Zapier for automated workflows. Send transcripts to Slack channels, Google Drive folders, or CRM systems as soon as they are ready. The API is also available for developers who want to build transcription into their own applications.