CTC ASR Implementations Voice AI Tools

End-to-end speech recognition systems using Connectionist Temporal Classification (CTC) loss function for acoustic modeling. Includes CTC decoders, training frameworks, and CTC variants (CTC-CRF). Does NOT include general ASR frameworks without explicit CTC focus, TTS systems, or non-neural ASR approaches.

There are 65 ctc asr implementations tools tracked. 5 score above 50 (established tier). The highest-rated is githubharald/CTCDecoder at 61/100 with 835 stars.

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#	Tool	Score	Tier	Stars	Language
1	githubharald/CTCDecoder Connectionist Temporal Classification (CTC) decoding algorithms: best path,...	61	Established	835	Python
2	githubharald/CTCWordBeamSearch Connectionist Temporal Classification (CTC) decoder with dictionary and...	61	Established	577	C++
3	nl8590687/ASRT_SpeechRecognition A Deep-Learning-Based Chinese Speech Recognition System 基于深度学习的中文语音识别系统	53	Established	8,359	Python
4	athena-team/athena an open-source implementation of sequence-to-sequence based speech processing engine	51	Established	970	C++
5	hirofumi0810/tensorflow_end2end_speech_recognition End-to-End speech recognition implementation base on TensorFlow (CTC,...	50	Established	314	Python
6	robmsmt/KerasDeepSpeech A Keras CTC implementation of Baidu's DeepSpeech for model experimentation	49	Emerging	243	Python
7	rakeshvar/rnn_ctc Recurrent Neural Network and Long Short Term Memory (LSTM) with...	49	Emerging	221	Python
8	scionoftech/DeepAsr Keras(Tensorflow) implementations of Automatic Speech Recognition	48	Emerging	24	Jupyter Notebook
9	philipperemy/tensorflow-ctc-speech-recognition Application of Connectionist Temporal Classification (CTC) for Speech...	48	Emerging	131	Python
10	mdangschat/ctc-asr End-to-end trained speech recognition system, based on RNNs and the...	47	Emerging	123	Python
11	smeetrs/deep_avsr A PyTorch implementation of the Deep Audio-Visual Speech Recognition paper.	46	Emerging	243	Python
12	AdroitAnandAI/Indian-Accent-Speech-Recognition Traditional ASR (Signal & Cepstral Analysis, DTW, HMM) & DNNs (Custom Models...	46	Emerging	91	Jupyter Notebook
13	ai-adv-lab/deepspeech.mxnet A MXNet implementation of Baidu's DeepSpeech architecture	46	Emerging	83	Python
14	georgesterpu/avsr-tf1 Audio-Visual Speech Recognition using Sequence to Sequence Models	45	Emerging	83	Python
15	zw76859420/ASR_WORD 采用端到端方法构建声学模型，以字为建模单元，采用DCNN-CTC网络结构。	44	Emerging	70	Python
16	huschen/kaggle_speech_recognition Conv-LSTM-CTC speech recognition network (end-to-end), written in TensorFlow.	44	Emerging	72	Python
17	pandeydivesh15/AVSR-Deep-Speech Google Summer of Code 2017 Project: Development of Speech Recognition Module...	43	Emerging	45	Python
18	MyrtleSoftware/deepspeech A PyTorch implementation of DeepSpeech and DeepSpeech2.	42	Emerging	50	Python
19	scart97/thunder-speech A Hackable speech recognition library.	42	Emerging	25	Python
20	holm-aune-bachelor2018/ctc Speech recognition with CTC in Keras with Tensorflow backend	41	Emerging	31	Python
21	zw76859420/ASR_Syllable 基于卷积神经网络的语音识别声学模型的研究	40	Emerging	181	Python
22	manishdhakal/ASR-Nepali-using-CNN-BiLSTM-ResNet Automatic speech recognition for the Nepali language using CNN,...	39	Emerging	24	Python
23	syhw/wer_are_we Attempt at tracking states of the arts and recent results (bibliography) on...	39	Emerging	1,865	—
24	sovse/Rus-SpeechRecognition-LSTM-CTC-VoxForge Распознавание речи русского языка используя Tensorflow, обучаясь на базе Voxforge	39	Emerging	59	Jupyter Notebook
25	georgesterpu/Taris Transformer-based online speech recognition system with TensorFlow 2	39	Emerging	26	Python
26	mozilla/deepspeech-playbook A crash course for training speech recognition models using DeepSpeech.	38	Emerging	24	—
27	01-vyom/End_2_End_Automatic_Speech_Recognition_For_Gujarati [ICON 2020] TensorFlow Code for "End-to-End Automatic Speech Recognition...	37	Emerging	13	Python
28	qiujiali/lattice_rnn Bi-directional Lattice Recurrent Neural Networks for Confidence Estimation	37	Emerging	15	Python
29	alecokas/BiLatticeRNN-Confidence Confidence Estimation for Black Box Automatic Speech Recognition Systems...	36	Emerging	14	Python
30	Sundy1219/ctc_beam_search_lm CTC+Beam_Search+kenlm 是用于以汉字为声学模型建模单元的解码系统	36	Emerging	48	C++
31	jx1100370217/DFCNN-master 这是一个基于全卷积神经网络的语音识别系统	35	Emerging	79	Python
32	huckiyang/QuantumSpeech-QCNN IEEE ICASSP 21 - Quantum Convolution Neural Networks for Speech Processing...	35	Emerging	107	Jupyter Notebook
33	messiaen/full-lattice-search Full Text Search Over Probabilistic Lattices with Elasticsearch!	34	Emerging	10	Java
34	nvmoyar/aind2-speech-recognition Some approaches based on deep learning to build the acoustic model for an...	34	Emerging	6	Jupyter Notebook
35	soheil-mp/Speech-Recognition End-to-End Speech Recognition using Neural Networks.	34	Emerging	35	Jupyter Notebook
36	matthijsvk/TIMITspeech Speech recognition on the TIMIT (or any other) dataset	33	Emerging	44	Python
37	gheyret/uyghur-asr-ctc Speech Recognition for Uyghur using deep learning	33	Emerging	42	Python
38	DeepSwissVoice/DeepVoice A TensorFlow implementation of Baidu's DeepSpeech architecture	33	Emerging	8	C++
39	CoffreLv/ASR_CNN_CTC 从零开始搭建一个基于CNN+CTC的语音识别系统。	32	Emerging	5	Python
40	TeaPoly/CTC-OptimizedLoss Computes the MWER (minimum WER) Loss with CTC beam search. Knowledge...	32	Emerging	59	Python
41	30stomercury/Automatic-Speech-Recognition End-to-End Speech Recognition Using Tensorflow	32	Emerging	40	Python
42	marvinborner/CTC-LSTM Spoken word recognition using CTC LSTMs for SWR2 Tübingen	31	Emerging	4	Python
43	SzLeaves/asr-model-ctc ASR deep learning models (use BiGRU & WaveNet & CTC), use Tensorflow2...	31	Emerging	3	Python
44	Alan-6666/chinese_asr a demo of chinese asr	31	Emerging	4	Python
45	TeaPoly/CE-OptimizedLoss Optimized loss based on cross-entropy (CE), like MWER (minimum WER) Loss...	30	Emerging	24	Python
46	shessam/DSR Throughout history, Altough there has been significant research in the field...	30	Emerging	6	Python
47	mangushev/deep_speech Implementation of Deep Speech: Scaling up end-to-end speech recognition...	29	Experimental	7	Python
48	TeaPoly/warp-ctc-crf An extension of thu-spmi/CAT which contains a full-fledged implementation of...	28	Experimental	12	Cuda
49	TeaPoly/cat_tensorflow Crf-based Asr Toolkit with TensorFlow implement	28	Experimental	8	Python
50	kjw11/Speaker-Aware-CTC Speaker-aware CTC (SACTC) for multi-talker overlapped speech recognition.	28	Experimental	22	Python
51	zvadaadam/speech-recognition End to End Speech Recognition with Tensorflow	28	Experimental	9	Python
52	Sundy1219/RNNLM Using RNNLM rescoring a sentence in Chinese ASR system	26	Experimental	6	Python
53	786440445/ASR_DFCNN_Transformer 1. ctc的DCNN声学模型+语言模型和 transformer的端到端模型	25	Experimental	8	Python
54	ColsonZhang/ASR-SPN 基于spn网络构建的孤立词语音识别模型，训练前处理过程使用了端点检测、mfcc特征提取和编码压缩以及DTW对齐算法。	25	Experimental	6	Jupyter Notebook
55	ss87021456/mfcc_ctc_speech apply mfcc feature of waveform with the LSTM + CTC loss architecture	24	Experimental	5	Python
56	bjornbytes/lua-deepspeech Lua Library for Speech Recognition	23	Experimental	25	C
57	MichaelFeng87/CGN_speech_recognition Speech recognition using DNNs, script to create features, use kaldi for...	23	Experimental	3	Python
58	tanzita/tf_asr Improving Deep Neural Networks Based Speech Recognition System For Far-field Speech	22	Experimental	2	Python
59	venusdev85/Speech-Recognition End-to-end Automatic Speech Recognition for Madarian and English in Tensorflow	22	Experimental	20	Python
60	xieliang555/Automatic-Speech-Recognition End-to-end ASR system on TIMIT	21	Experimental	9	Python
61	tassosblackg/Deep4Deep CNN implementation for ASV	21	Experimental	1	Python
62	markus-m-u-e-l-l-e-r/CTC.ISL ISL Speech Recognition Toolkit for training neural networks with the CTC...	19	Experimental	4	Python
63	LuluW8071/Deep-Speech-2 Implementation of Deep Speech 2 paper with BiGRU and BiLSTM using LibriSpeech Dataset	18	Experimental	2	Jupyter Notebook
64	zaanind/Asr_CTC This repository provides a Jupyter notebook for (CTC) based Automatic Speech...	18	Experimental	2	Jupyter Notebook
65	to-schi/ASR-Deepspeech2-Tensorflow An end-to-end speech recognition engine similar to DeepSpeech2	11	Experimental	4	Jupyter Notebook

Comparisons in this category

ASRT_SpeechRecognition and ctc-asr (53 vs 47) CTCDecoder and CTCWordBeamSearch (61 vs 61) tensorflow_end2end_speech_recognition and tensorflow-ctc-speech-recognition (50 vs 48) tensorflow_end2end_speech_recognition and ctc-asr (50 vs 47) tensorflow_end2end_speech_recognition and kaggle_speech_recognition (50 vs 44) tensorflow-ctc-speech-recognition and ctc-asr (48 vs 47) tensorflow-ctc-speech-recognition and kaggle_speech_recognition (48 vs 44) tensorflow-ctc-speech-recognition and ctc (48 vs 41)