Every common audio format
MP3, WAV, M4A, OGG, FLAC, AAC, WMA, AIFF, AMR, all supported with no conversion needed. Drag the audio in and AskSia handles the rest.
Format flexibility
LMS Integration
Uni & Course Analysis
Useful Tools
Resources
EN
AI Audio Summarizer
Summarize any audio, with timestamps and speakers.
Drop an audio file into AskSia and read a structured summary in minutes. Every claim carries a timestamp and a speaker label, so you can read fast, jump to any moment, and quote the right voice. Recorded lectures, interviews, podcasts, voice memos, and field recordings. 40+ languages, free to start.
SupportsPDFWordPowerPointMarkdownScanned PDF · OCREPUBTXTCSVGoogle Docs
4.8 / 5 · 2M+ documents summarized by students at 2000+ universities
asksia.ai/summarize
9 files indexed
Study materials
Upload
Library
Selected files
Biology_Chapter_12.pdf
500p
Lecture_Slides_W6.pptx
Prof_Chen_Notes.docx
Handwritten_Review.pdf
OCR
Study_Guide.md
Problem_Set_5.pdf
Research_NeurIPS.pdf
Midterm_Review.docx
Tutorial_Slides.pptx
Midterm study plan — from all 9 of your files
Focus on cellular respiration and the Calvin cycle first — they dominate your textbook1 and lecture slides2. Prof. Chen's notes flag three common exam traps3.
Biology_Chapter_12.pdf
1
5
Lecture_Slides_W6.pptx
2
Prof_Chen_Notes.docx
3
Handwritten_Review.pdf
4
Study_Guide.md
6
≡ Summary
Study guide
Quiz
Flash Card
PDF
Biology_Chapter_12.pdf
p. 217
Quick Answer
What is AskSia AI Audio Summarizer?
AskSia AI Audio Summarizer takes any audio file (MP3, WAV, M4A, OGG, FLAC, AAC, WMA, AIFF, AMR) and returns a structured summary with timestamps on every claim and speaker labels for up to 10 distinct voices. Useful for recorded lectures, qualitative research interviews, podcasts, voice memos from class, and field recordings. Hover a [N] citation to see the moment with the transcript highlighted; click to jump into the audio. 40+ languages with translation.
100
files per session
500p
textbook in one pass
OCR
native, zero setup
100%
answers cited to page
Why AskSia
The audio summarizer built for studying.
Generic audio tools transcribe but stop there. AskSia transcribes, summarizes, attributes speakers, and times-stamps every claim, so you can study fast.
Fast, accurate transcription
Sub-100ms latency for live audio, under 1 minute per hour for uploaded files. 95%+ accuracy on clear audio with handling of technical vocabulary, names, and academic terms.
Fast plus accurate
Speaker labels for up to 10 voices
AskSia identifies up to 10 distinct speakers in an audio file, color-codes their turns, and shows which speaker each cited claim came from. Useful for interview audio and panel discussions.
Up to 10 speakers
Timestamped to the second
Every line of the summary carries a [N] marker with a timestamp. Hover to see the transcript at that moment. Click to jump into the audio at that exact second.
Timestamp citations
Cross-audio research sessions
Drop a series of audio recordings (interview research, lecture series, podcast season) into one session and ask cross-audio questions with synthesized answers and per-recording timestamps.
Series support
From audio to study pack
One click turns the audio summary into definition flashcards, a concept-check quiz, a study guide, or a visual concept map. Each card and question links back to the original audio timestamp.
Flashcards, quizzes, maps
How It Works
From audio file to timestamped summary in minutes.
Drag and drop. Every common audio format works.
Step 01
Upload the audio file
Drag the audio file (MP3, WAV, M4A, OGG, FLAC, AAC, WMA, AIFF, AMR) into AskSia. Recorded lectures, interviews, podcasts, voice memos all work.
Drop documents here
PDF, Word, PPT, Markdown, scans, and photos
PDF
Biology_Chapter_12.pdf
500p
P
Lecture_Slides_W6.pptx
38
W
Prof_Chen_Notes.docx
12
MD
Study_Guide.md
4
9 files ready · 100 max
Step 02
AskSia transcribes and labels speakers
AskSia transcribes the audio (under 1 minute per hour at 95%+ accuracy on clear audio), identifies up to 10 distinct speakers, and builds a timestamped citation index.
Indexing in parallel
PDF
Textbook pages
DONE
P
Lecture slides
DONE
W
Professor notes
DONE
PDF
Handwritten review
OCR
MD
Markdown study guide
READING
100%
Sources indexed with page-level citation anchors.
Step 03
Read, ask, export
Read the structured summary with [N] timestamp citations and speaker labels. Ask Sia for flashcards or a quiz. Export as TXT, DOCX, SRT, or Google Docs.
What should I study first for the midterm?
Start with cellular respiration1 and the Calvin cycle2. Your handwritten review adds a comparison table4.
Biology_Chapter_12.pdf
p.217
Referenced passage highlighted on the original page.
Use Cases
How students summarize audio with AskSia.
Recorded class lectures
Drop an audio recording of a class lecture (from your phone, a recorder, or Zoom audio) and AskSia transcribes and summarizes with timestamps, useful for review and accessibility.
Lecture audio
Voice memos from class
Record voice memos during or after class on your phone, drop them into AskSia, and read the structured summary with timestamps. Useful for capturing study ideas in the moment.
Voice memos
Interview-based research
Upload qualitative research interview audio and AskSia identifies up to 10 speakers, transcribes and summarizes with timestamps, and lets you extract quotes by speaker or theme.
Research interviews
Podcasts from MP3
Drop downloaded podcast MP3s into AskSia and read structured episode summaries with speaker labels and timestamps, useful for academic and news podcast study.
Podcast audio
Field recordings
Audio captured in the field (linguistics, ethnography, anthropology, music) can be transcribed and summarized with timestamps, useful for fieldwork and qualitative research projects.
Field recordings
Foreign-language audio
Audio in Spanish, Mandarin, French, German, Japanese, Korean, Arabic, or any of 40+ supported languages can be summarized in English with timestamps and speaker labels preserved.
40+ languages
Compare
AskSia vs. NotebookLM,
ChatPDF, and ChatGPT.
Most AI document tools are built for one file. AskSia is built for students studying a whole library at once.
| Feature | AskSia | NotebookLM | ChatPDF | ChatGPT File Upload |
|---|---|---|---|---|
| Max files per session | ✓ 100 | ~ 50 | 1 | ~ 10–20 |
| Native OCR for scanned PDFs | ✓ Auto, no setup | ~ limited | ✗ | ✗ |
| Handwritten notes recognition | ✓ 40+ languages | ✗ | ✗ | ✗ |
| Mixed-format session (PDF+PPT+DOCX+MD) | ✓ All at once | ~ partial | PDF only | ✓ |
| Hover-to-source page highlighting | ✓ Visual preview | ~ citations only | ~ page ref | ✗ |
| 500-page textbook in one pass | ✓ No chunking | ~ size limits | ~ size limits | ✗ truncation |
| Cross-document Q&A | ✓ Unified answer | ✓ | ✗ single doc | ~ degrades |
| Auto flashcards & quizzes | ✓ One click | ✗ | ✗ | ✗ |
| Free to start, no credit card | ✓ 100 files free | ✓ | ~ 1 file free | ✗ Plus needed |
FAQ
Common questions about audio summarizing.
How do I summarize an audio file with AskSia?
Drag the audio file (MP3, WAV, M4A, OGG, FLAC, AAC, WMA, AIFF, AMR) into AskSia. AskSia transcribes the audio, identifies up to 10 distinct speakers, and returns a structured summary with timestamps on every claim. Hover any [N] to see the moment highlighted; click to jump into the audio.
What audio formats does AskSia support?
AskSia supports MP3, WAV, M4A, OGG, FLAC, AAC, WMA, AIFF, and AMR. There is no need to convert between formats; drag any audio file in and AskSia handles the rest. The free plan supports audio files up to 30 minutes per file; Pro and Super remove the duration cap.
How accurate are the transcript and timestamps?
On clear audio, AskSia transcribes at 95%+ accuracy and uses context to handle technical vocabulary, names, and academic terms. Timestamps are precise to the second, and every claim in the summary is grounded in a [N] citation linking to the exact moment.
How fast does AskSia transcribe audio?
Live audio transcribes at sub-100ms latency. Uploaded audio files process at under 1 minute per hour of audio. A 60-minute lecture recording is ready in about 1 minute, and a 3-hour interview is ready in about 3 minutes.
Can AskSia tell speakers apart in audio?
Yes. AskSia identifies up to 10 distinct speakers in an audio file, color-codes their turns, and shows which speaker each cited claim came from. Speaker labels can be renamed (Professor, TA, Interviewee A) after the transcription.
Can I summarize multiple audio files at once?
Yes. Drop a series of audio files into one session (interview series, lecture series, podcast episodes) and AskSia handles each, then lets you ask cross-audio questions like 'where do these recordings agree?' or 'compare positions on topic X'.
Can AskSia summarize audio in other languages?
Yes. AskSia transcribes and summarizes audio in 40+ languages and detects the source language automatically. You can also translate the summary at the same time, useful for international research and language-area programs.
Start Today
Drop an audio file. Read it in minutes.
Whether a recorded lecture, a research interview, a podcast download, or a voice memo, AskSia transcribes and summarizes any audio with timestamps and speaker labels.
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