RIRs and Noises (SLR28)
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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.
Room impulse responses + isotropic noises — reverberation augmentation set.
Best for reverberation augmentation for far-field ASR + speaker verification. Pricing: free.
What it is
OpenSLR-28 bundles simulated + real RIRs + isotropic noise samples for far-field ASR data augmentation. The companion to MUSAN in Kaldi recipes. License: Apache-2.0.
Watch out for: Apache-2.0 · simulated + real RIRs · used in Kaldi recipes universally. Cite: Ko et al., ICASSP 2017.
Install / use
Go to RIRs and Noises (SLR28) www.openslr.orgWhat people actually do with RIRs and Noises (SLR28)-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 | No |
| Streaming / real-time | No |
| Languages supported | 0 |
| HIPAA eligible | No |
RIRs and Noises (SLR28) vs Whipscribe
| Feature | RIRs and Noises (SLR28) | Whipscribe |
|---|---|---|
| Category | Open source | Transcription APIs |
| Pricing | free | $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 | No | Yes |
| Streaming | No | No |
| Languages | 0 | 99 |
| Platforms | OpenSLR | Web, API, MCP |
Alternatives to RIRs and Noises (SLR28)
Frequently asked about RIRs and Noises (SLR28)
Is RIRs and Noises (SLR28) free?
Yes. RIRs and Noises (SLR28) is free and open source.
Does RIRs and Noises (SLR28) work on Mac, Windows and Linux?
RIRs and Noises (SLR28) runs on OpenSLR. It is not listed for other platforms; check the vendor for anything beyond OpenSLR.
How do I install RIRs and Noises (SLR28)?
Download the installer for your platform from https://www.openslr.org/28/. No terminal needed.
Does RIRs and Noises (SLR28) identify different speakers?
No. RIRs and Noises (SLR28) 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 RIRs and Noises (SLR28) give word-level timestamps?
No — RIRs and Noises (SLR28) produces segment or sentence timing only, so subtitle cues can land mid-word.
Can RIRs and Noises (SLR28) transcribe live audio?
No — RIRs and Noises (SLR28) works on finished files, not a live stream.
Is RIRs and Noises (SLR28) HIPAA compliant?
RIRs and Noises (SLR28) 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 RIRs and Noises (SLR28)?
Apache-2.0 · simulated + real RIRs · used in Kaldi recipes universally. Cite: Ko et al., ICASSP 2017.
Who is RIRs and Noises (SLR28) best for?
Reverberation augmentation for far-field ASR + speaker verification.
Does RIRs and Noises (SLR28) run offline?
RIRs and Noises (SLR28) runs on your own machine — it is open source, so nothing leaves the computer unless you configure it to.
Can I use RIRs and Noises (SLR28) in the browser?
No — RIRs and Noises (SLR28) is a OpenSLR application, not a web app. You install it rather than sign in to it.
Who makes RIRs and Noises (SLR28)?
RIRs and Noises (SLR28) is made by JHU CLSP.
What kind of tool is RIRs and Noises (SLR28)?
In this directory RIRs and Noises (SLR28) is filed under dataset as a open-source tool.
What are the alternatives to RIRs and Noises (SLR28)?
There is a side-by-side page at /tools/rirs-noises-alternatives comparing RIRs and Noises (SLR28) with the closest tools in the same category on price, platform and features.
Can I automate RIRs and Noises (SLR28)-style transcription without running it myself?
Yes. If what you want is transcripts rather than the tool itself, Whipscribe does the same job as a hosted API: submit a file or URL, poll a job id, pull the result as txt, json, srt, vtt or docx. $0.012 a minute — about $0.72 an audio hour — bought as credits that never expire. The automation recipes on this site show it wired to Drive folders, Zoom recordings, S3 buckets and no-code platforms.
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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Long recording to get through?
One file up to 10 hours, as an upload or a link: see MP3 to text for long recordings, transcribing a podcast episode and the SRT generator.
Comparing tools before you pay?
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