TIMIT
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The first 20 minutes of any recording are transcribed free: a recording up to 20 minutes transcribes in full, a longer one is previewed, and a pack from $6 (500 minutes) transcribes the rest and opens every export, and credits never expire.
Phonetically-balanced 5h read-speech corpus from 1986 — phoneme recognition benchmark.
Best for phoneme-level recognition baselines; teaching ASR fundamentals. Pricing: paid.
What it is
TIMIT (LDC93S1) is the foundational phonetically-balanced read-speech corpus — 630 speakers across 8 US dialect regions, phone-aligned at 16 kHz. Still the standard for phoneme recognition pedagogy. LDC paid.
Watch out for: LDC license · paid · 630 speakers from 8 dialect regions · 6300 utterances · phoneme-aligned. Cite: Garofolo et al., 1993.
Install / use
Go to TIMIT catalog.ldc.upenn.eduWhat people actually do with TIMIT-style transcription
The tool is the means. These are the jobs — each one priced at published rates, each one wired up on its own page.
Features
| Speaker diarization | No |
| Word-level timestamps | Yes |
| Streaming / real-time | No |
| Languages supported | 1 |
| HIPAA eligible | No |
TIMIT vs Whipscribe
| Feature | TIMIT | Whipscribe |
|---|---|---|
| Category | Open source | Transcription APIs |
| Pricing | paid | $6–$24 one-time packs (credits never expire) · first 20 minutes free |
| Speaker identification | No | Named in the summary, key quotes and chapters |
| Word timestamps | Yes | Yes |
| Streaming | No | No |
| Languages | 1 | 99 |
| Platforms | LDC | Web, API, MCP |
Alternatives to TIMIT
Frequently asked about TIMIT
How much does TIMIT cost?
TIMIT is a paid product. Pricing changes; verify on the vendor's own page before budgeting.
Does TIMIT work on Mac, Windows and Linux?
TIMIT runs on LDC. It is not listed for other platforms; check the vendor for anything beyond LDC.
How do I install TIMIT?
Download the installer for your platform from https://catalog.ldc.upenn.edu/LDC93S1 # LDC membership. No terminal needed.
How many languages does TIMIT support?
TIMIT lists 1 languages.
Does TIMIT identify different speakers?
No. TIMIT does not label speakers; a conversation comes back as one continuous text. If you need speaker labels, that is a separate tool or a different service.
Does TIMIT give word-level timestamps?
Yes — TIMIT produces timing per word, which is what subtitle cues and clip boundaries need.
Can TIMIT transcribe live audio?
No — TIMIT works on finished files, not a live stream.
Is TIMIT HIPAA compliant?
TIMIT does not claim HIPAA compliance. For PHI, run it on infrastructure you control or choose a service that will sign a BAA.
What are the limitations of TIMIT?
LDC license · paid · 630 speakers from 8 dialect regions · 6300 utterances · phoneme-aligned. Cite: Garofolo et al., 1993.
Who is TIMIT best for?
Phoneme-level recognition baselines; teaching ASR fundamentals.
Does TIMIT run offline?
TIMIT runs on your own machine — it is open source, so nothing leaves the computer unless you configure it to.
Can I use TIMIT in the browser?
No — TIMIT is a LDC application, not a web app. You install it rather than sign in to it.
Who makes TIMIT?
TIMIT is made by LDC / NIST / Texas Instruments + MIT.
What kind of tool is TIMIT?
In this directory TIMIT is filed under dataset as a open-source tool.
What are the alternatives to TIMIT?
There is a side-by-side page at /tools/timit-alternatives comparing TIMIT with the closest tools in the same category on price, platform and features.
Whipscribe is a hosted transcription service. If you want transcripts without running infrastructure, paste a URL or drop a file in the form below — you'll have a transcript in seconds.
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