Lecture recording to flashcards

Turn a lecture recording into flashcards

Upload the recording and Mnema writes flashcards and quiz questions from what was actually said. Before you save, every card shows its passage from the transcript and roughly when it was said, so you can check it against the lecture before you learn it.

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Cardiac Cycle: Cardiology Exam Questions

Made from lecture-cardiac-cycle.wav, a 12 minute lecture recording

What are the two pumps in the heart and their respective circulations?
The heart has two pumps working side by side: the right side receives oxygen-poor blood from the body and sends it through the lungs (pulmonary circulation), while the left side receives oxygen-rich blood from the lungs and pumps it to the whole body (systemic circulation).
Source: lecture-cardiac-cycle.wav, around 0:28
What is the role of the sinoatrial (SA) node in the heart?
The SA node is the natural pacemaker of the heart; it initiates the electrical impulse by slowly depolarizing on its own, causing both atria to contract together.
Source: lecture-cardiac-cycle.wav, around 1:52
At what rate can the AV node pace the heart?
The AV node can pace the heart at around 40 to 60 beats per minute.
Source: lecture-cardiac-cycle.wav, around 3:43
What does a wider QRS complex on an ECG indicate about ventricular conduction?
A wider QRS suggests that the impulse is traveling through the ventricles by a slower route, for example, because one of the bundle branches is blocked.
Source: lecture-cardiac-cycle.wav, around 4:49
What causes the first heart sound (lub) during the cardiac cycle?
The first heart sound (lub) is caused by the closing of the mitral and tricuspid valves at the start of ventricular systole.
Source: lecture-cardiac-cycle.wav, around 7:50
What does the time interval between the 'lub' and 'dub' heart sounds represent?
The time between 'lub' and 'dub' represents ventricular systole, the phase when the ventricles contract to pump blood.
Source: lecture-cardiac-cycle.wav, around 8:17
How does the parasympathetic nervous system affect heart rate at rest?
Parasympathetic fibers of the vagus nerve release acetylcholine at the SA node, slowing the heart rate. At rest, the vagus nerve is dominant, causing the resting heart rate to be slower than the intrinsic rate of the SA node.
Source: lecture-cardiac-cycle.wav, around 10:28

How it works

1
Upload the recording
MP3, M4A, WAV, OGG or WebM, up to an hour long. Mnema transcribes it first.
2
Say what you need
Before it writes, Mnema asks a few quick questions: what the cards are for, how detailed they should be and which deck they go into.
3
Check, then study
Every draft shows the passage it came from, the time in the recording and whether a second check found it in the passage. Keep, edit or delete it, then study with spaced repetition, cram mode or a quiz.

Why the timestamp matters

Transcription can mishear a word, and AI can phrase things its own way. A card that says “around 12:40” tells you where to look in your own recording before you commit it to memory. Mnema names the moment, and in study it plays your recording from there.

When a card adds something the lecturer did not say, it tells you, for example “wording added by AI”. A card that comes from general knowledge says so plainly instead of pretending to quote your lecture.

A second check reads every card against its passage. A card the recording does not support is dropped or labelled general knowledge, and each card shows the result, such as “Checked against the source” or “Not double-checked yet”.

What works best

One lecture per file, up to an hour. Split a longer one into parts.
Slides from the same lecture? Attach them too: cards from the slides show the slide number.
Clear audio beats long audio. The closer the phone was to the lecturer, the better the cards.

Record only where it is allowed

Many universities have rules about recording lectures, and lecturers own their teaching material. Ask first, or check your course's rules, before you record.

Questions

Which audio formats does Mnema accept?

MP3, M4A, WAV, OGG and WebM audio files.

How long can a recording be?

Up to one hour per file. MP3 and WAV files can be up to 120 MB; M4A, OGG and WebM up to 24 MB. For a longer lecture, split the recording and upload the parts.

Can Mnema make a quiz from a lecture recording?

Yes. Ask for quiz questions instead of flashcards. Each question shows where it came from in the recording, the same way the cards do.

How do I know a card is right?

Before you save, open its source: you see the exact passage from the transcript, roughly when it was said, and whether a second check read the card against that passage. After you save, study plays the recording from that moment, so you can hear it for yourself.

Is Mnema free?

Mnema is free during invite-only early access. On the planned free plan, with 200 AI credits every 30 days, a recording costs 8 credits a minute, so the credits cover about 25 minutes of lecture. Request early access and start with your own recordings.

Make cards you can check

Before you save, each AI card shows its passage and its page, slide, time or web page, says how far to trust it, and says whether a second check found it in the source.

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