Questions tagged [speech-recognition]
Automatic speech recognition (ASR) aims to identify words and phrases in spoken language and convert them to a machine-readable format.
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Are e2e DL systems better than DNN-HMM models in speech recognition?
End-to-end deep learning systems for automatic speech recognition (ASR) have been around for a while now since Deep Speech (2014), but I noticed that DNN-HMM based methods are still performing well ...
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8 views
How to use GMMs for acoustic signal classification?
There are a number of applications of the Gaussian Mixture Model (GMMs) to acoustics/audio data for the purposes of classification; ex paper1 and ex paper2. GMMs ...
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12 views
Hidden markov models for phoneme recognition in continuous speech
I know how to apply hmm when I have an isolated phoneme. I'd just have to create several models of hmm (with al leats 3 states per model), one for each phoneme, compute forward algorithm on all of ...
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17 views
How to create dataset for speech recognition using librosa [closed]
I loaded the audio using librosa and extracted mfcc feature of the audio. I now have array of shape (20,N). How do I feed this as input to LSTM to predict?
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48 views
WaveNet Global and local conditioning
WaveNet is a deep learning framework able to generate raw audio signal from a sequence like text sequence.
https://arxiv.org/abs/1609.03499
It is also possible to "imitate" in a way the voice of the ...
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1answer
37 views
Speech recognition - hangover scheme - voice activity detection
I am doing a voice activity detection challenge, and I am asked to add a hangover scheme to the model. I read about hangover schemes in different papers but I couldn't find a definition for this. What ...
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345 views
What is low rank linear layer in neural networks?
Going through the paper Convolutional Neural Network for Small-footprint Keyword Spotting. In the paper, authors have used low rank linear layer after convolution ...
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1answer
30 views
Verifying Time Warp
Time warp has been widely assumed in domain of speech processing. If $Xw(t)$ represents a time warped version of $X(t)$, then $Xw(t) = X(t-w(t))$ where $w(t)$ is an arbitrary function with a banded ...
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49 views
How does CTC work in Speech Recognition?
I have already read the 2006 Paper about CTC by Graves but I still don't understand it fully. I am searching for a simple but still detailed explanation of how "Connectionist Temporal Classification" (...
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1answer
70 views
RNN(LSTM) model fails to classify new speaker voice
I'm fairly new to ML and at the moment I'm trying to develop a model that can classify spoken digits (0-9) by extracting mfcc features from audio files.
My data ...
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1answer
229 views
Transfer learning for audio
I know that when working with images, what people normally do is download a big model trained with huge data and freeze most of the layers except the lasts ones to train them with their own data.
I'm ...
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615 views
Validation loss is less than training loss by 5 units. How this result is interpreted?
Iam training a Keras model for end-to-end speech recognition. I have my own dataset of speech containing about 400 wave files. Text transcriptions is also given as input. Model summary is:
...
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55 views
Adapt speech recognition for Shakespeare english
We need to be able to search the works of Shakespeare by voice. The way I see it, the goal is if I quote into the microphone:
"Yet but three come one more.
Two of both kinds make up four.
Ere ...
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1answer
2k views
Turkish speech recognition (speech->text) in Google Speech API? [closed]
Google's Speech API has audio speech to text capabilities in multiple languages. It supports Turkish too. That language is very interesting, it's so called agglutinative: you stick word parts one ...
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1answer
45 views
Word Error Rate over Data Set
In speech to text, one common metric is the word error rate (WER).
WER is the word-level Levenshtein distance, which is the minimum number of substitutions ($S$), deletions ($D$), and insertions ($...
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1answer
268 views
How to normalize text when computing the word error rate of a speech recognition system?
I am looking for a library, script or program that can normalize the transcribed and gold texts when computing the word error rate (WER) of an automated speech recognition system.
For example, if:
...
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1answer
63 views
Spot word in spoken sentence : advice needed
I have to make a live speech recognition program that can spot specific words in a spoken sentence. For now I have to recognize the words "yes" and "no".
I already trained Google's model and it ...
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1answer
71 views
How to prevent the creation of redundant mixtures while training a GMM?
I'm currently trying to train a GMM(UBM) with 1024 Gaussian mixtures for speaker verification.
However, after training the GMM, it appears that some mixtures are useless/redundant.
(little to no ...
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386 views
Keyword Spotting: How to train a model with general speech corpus?
I am trying to find a correct way to train a DNN based keyword spotting (Deep KWS) with general speech corpus (VS data) described in this paper (Chen, Guoguo, Carolina Parada, and Georg Heigold. "...
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1answer
63 views
MFCCs and MoG-HMMs for speech recognition
BACKGROUND
MFCCs are coefficients which represent the most important parts of speech, and about 12 of them are used to model a one 512 points long frame (of speech). Along with them you would use ...
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1answer
43 views
Why is phase reconstruction considered hard
I am studying deep learning models for single channel speech separation.
I come across several recent methods:
Permutation Invariant Training
Deep Clustering
Deep Attractor Network
All of these ...
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2answers
295 views
Why has deep learning only shown decent results in the fields of computer vision and speech recognition? [closed]
We all know about the success of ImageNet, AlphaGo etc which used deep neural networks in computer vision, or the use of RNNs in Google Translate. But why are we not seeing similar advances in other ...
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116 views
Program to evaluate the output of a speech recognition system
I am looking for a library, script or program that can evaluate the output of a speech recognition system. The output of the speech recognition system is a simple text file, and I have the gold output ...
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1answer
76 views
how we input speech signal waveforms in two deep learning algorithms?
I am working with deep learning algorithms like CNN and RNN.I always wonder what is the best way to input wave form type data in to the deep learning algo. I know there are methods like wavelet or mel ...
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1answer
672 views
Forced alignment HMM
I am currently trying to understand what is involved to train a Hidden Markov Model (HMM) with Forced alignment. Forced alignment, as far I understand, is to align the audio file with the utterance ...
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1answer
445 views
Understanding hidden markov model, and how it is applied in speech recognition
I have for some some time tried to understand how this hidden markov model (hmm) works, and have found a lot of tutorials/papers on it which make use of the same examples/principles of explaining the ...
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1answer
704 views
How to derive the GMM log-likelihood formulation in the eigenvoice modeling technique?
Given a GMM with mean $M=[M_1, M_2, ..., M_C]$ and covariance $\Sigma=[\Sigma_1, \Sigma_2, ..., \Sigma_C]$ (where $C$ is the number of mixtures),
many papers on eigenvoice modeling states that the ...
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0answers
652 views
The state-of-the-art methods for speech recognition?
Recently I noticed that Google and Apple have really high quality speech-recognition services. I was wondering about the state-of-the-art methods and techniques they are/might be using to achieve such ...
