Kaldi (software)

Open-source speech recognition software toolkit From Wikipedia, the free encyclopedia

Kaldi is an open-source speech recognition toolkit written in C++ for speech recognition and signal processing, freely available under the Apache License v2.0.

Quick Facts Developer(s), Stable release ...
Kaldi
Developer(s)Daniel Povey and others
Stable release
5.5.636 / February 2020; 5 years ago (2020-02)
Repositoryhttps://github.com/kaldi-asr/kaldi
Written inC++
Operating systemUnix systems (Linux, BSD, OSX 10.{8,9} etc.), Windows (via Cygwin)
TypeSpeech recognition
LicenseApache License v.2.0[1]
Websitekaldi-asr.org
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Kaldi aims to provide software that is flexible and extensible,[2] and is intended for use by automatic speech recognition (ASR) researchers for building a recognition system.

It supports linear transforms, MMI, boosted MMI and MCE discriminative training, feature-space discriminative training, and deep neural networks.[3]

Kaldi is capable of generating features like mfcc, fbank, fMLLR, etc. Hence in recent deep neural network research, a popular usage of Kaldi is to pre-process raw waveform into acoustic feature for end-to-end neural models.

Kaldi has been incorporated as part of the CHiME Speech Separation and Recognition Challenge over several successive events.[4][5][6] The software was initially developed as part of a 2009 workshop at Johns Hopkins University.[7]

Kaldi is named after the legendary Ethiopian goat herder Kaldi who was said to have discovered the coffee plant.[8]

See also

References

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