轉錄 Apple 裝置的 M4A。無需轉換。

iPhone 語音備忘錄會將錄音儲存為 M4A。直接丟入檔案 — AAC 音訊解碼、轉錄,並在約 90 秒內回傳附有時間戳與說話者標籤的文字稿。

Drop a file, or pick one

MP3 · WAV · M4A · MP4 · MOV · MKV · OGG · OPUS · FLAC · WEBM — up to 100 MB anonymously

Paste a link, we’ll fetch the audio

YouTube · TikTok · Vimeo · Twitter · SoundCloud · Spotify · 50+ more

Record straight from your browser

Sign up takes 30 seconds — recording opens right after, in the dashboard.

No card required~90s per 60-min fileSRT · VTT · DOCX · TXTFiles auto-deleted in 24h

↓ Watch what happens

Audio in. Transcript out.

Drop a file, paste a URL, or record live — text appears back with speaker labels and timestamps. Same pipeline whether the source is a file, a URL, or your microphone.

Microphone · liveREC 00:07.41
en-US auto-detected16 kHz mono
~90s
Transcript · streaming2 speakers · 47:08
S1

Thanks for making the time. I want to start with framing — what was the original hypothesis behind the project?

S2

Honestly, maybe forty percent. The shape held — the mechanics underneath had to be rebuilt almost entirely.

S1

What flipped it for you? Was there one customer call, one piece of data

~95% accuracy on clean audioSRT · DOCX · TXT · JSON

↓ This is the dashboard

This is what loads when the job finishes.

Same layout as the real dashboard — Summary, full Transcript, Speakers tab, Exports. Key points and action items extracted automatically. Auto-tags on every job.

Try it on your own file — it's free

Three real options · honest comparison

Built-in dictation, AI speech-to-text, or a human transcriber.

Three legitimate ways to get text from spoken audio in 2026. Each is best for different work. Honest numbers below — no claim that AI matches a professional human transcriber on hard audio.

Option 01

Built-in dictation

Live, free, on-device. Handy for short bursts while you talk.

Accuracy · clear English~85%
Speaker separationNo
TimestampsNo
Languages~30
60-min fileLive only
CostFree
Best forShort voice notes while you walk. Hands-free messaging. Dictating an email at a stoplight.
Option 02

AI speech-to-text

~30× faster than realtime. 100+ languages. Speaker labels. The sweet spot for most work.

Accuracy · clear English95%+
Speaker separationYes (Pro+)
TimestampsPer sentence
Languages100+ auto
60-min file~90 s
Cost · per min$0.03
Best forInterview recordings · meeting notes · podcast transcripts · YouTube subtitles · batch jobs · API automation · field journalism.
Option 03

Human transcriber

Gold-standard accuracy when the audio is hard or the stakes are legal.

Accuracy · clear English98–99%
Speaker separationManual
TimestampsPer turn
LanguagesPer transcriber
60-min file4–8 hours
Cost · per min$1–3
Best forLegal depositions · medical dictation · archival oral history · anything where 95%+ accuracy is non-negotiable.

Built-in dictation figures from public iOS / Android speech API benchmarks. Human transcriber rates from US/UK industry surveys 2024–2025.

Accuracy · real-world numbers

95%+ on clear English. It holds up on real-world recordings too.

Modern transcription reaches 95%+ word accuracy on clear English at 128 kbps and above, comparable to a human transcriber on the same recording. The audio coming in sets the ceiling — cleaner source, cleaner transcript. The breakdown below covers the recordings we actually see in production.

97%+
Clean studio audio

USB or studio microphone in a treated room. Single speaker at conversational distance. The headline number.

95%+
Clear English at 128 kbps+

Podcast masters, interview recordings, well-mic'd meetings. The sweet spot for most professional work.

93%
Real-world podcast

Field-recorded interviews, podcast episodes at 64–128 kbps, multi-speaker recordings. Usable for editorial without a review pass.

91%
Meeting room recording

Ceiling mic, omnidirectional capture, mild reverb, multiple speakers at distance. Plan a rename pass on the speaker chips.

Common questions

7 things people ask about this.

01如何從 iPhone 取得 M4A 檔案?+
在語音備忘錄中,點選錄音,點選三點(…)選單,選擇分享。透過 AirDrop 傳送到 Mac、儲存到「檔案」(然後從瀏覽器存取),或透過電子郵件將附件傳送給自己。檔案名稱包含錄音的日期和時間,並以 .m4a 結尾。
02我需要先將 M4A 轉換為 MP3 嗎?+
不需要。直接上傳 .m4a 檔案。AAC 音訊會直接解碼,無需任何轉換。先轉換為 MP3 只會增加不必要的步驟,如果使用較低位元率,還可能降低品質。
03M4A 檔案大小上限是多少?+
免費方案:100 MB(足以容納一般語音備忘錄,但免費方案每個檔案限制 30 分鐘)。Pro 方案:2 GB,每個檔案最長 10 小時。Business 方案:5 GB,每個檔案最長 10 小時。較長的 iPhone 語音備忘錄在 Pro 方案中可輕鬆處理。
04M4A 檔案是否支援說話者標籤?+
是的,在 Pro 和 Business 方案中。iPhone 錄音中的兩位說話者能獲得良好的分離 — 將手機放在兩位說話者之間以獲得最佳效果。三位或更多說話者建議在語音重疊的部分進行手動校對。
05iPhone 語音備忘錄錄音能達到多少準確度?+
在安靜的室內環境中,以對話距離錄音可達 93% 以上。戶外錄音、團體討論或手機距離說話者較遠時,準確度約為 87–90%。透過播放音訊進行一次校對即可修正其餘錯誤。
06Mac 上的語音備忘錄是否也適用?+
是的。Mac 語音備忘錄和 QuickTime 音訊錄音都會儲存為 M4A,可直接上傳。Mac 錄音通常使用 USB 麥克風或更好的麥克風位置,因此在安靜房間中的準確度通常與 iPhone 相當。
07我可以轉錄 GarageBand 匯出的 M4A 嗎?+
可以,只要 M4A 包含語音。GarageBand 匯出的口語音軌為 M4A,可直接上傳。如果匯出的是純音樂,轉錄將不會產生有用的輸出。

Drop something in. See what comes out.

每月 30 分鐘免費,無需信用卡。上傳任何語音備忘錄 M4A — 約 90 秒內獲得文字稿和說話者標籤。

開始免費轉錄