问题
My requirements are similar to this question since the question is now 3 years old I am re-posting the question with information specific to mine, I want to create an application which takes a .wav (or any other standard audio file format) and converts it to text.
For Speech Recognition I have decided to use sphinx4, I am trying to enhance the Transcriber demo provided with sphinx. Its good but That only works for a specific Grammar (written in .gram and .gxml files).
EDIT To be able to use it with English ? I am trying to configure it with VoxForge_en_0.4. My config.XML file looks like:-
<?xml version="1.0" encoding="UTF-8"?>
<!--
Sphinx-4 Configuration file
-->
<!-- ******************************************************** -->
<!-- biship configuration file -->
<!-- ******************************************************** -->
<config>
<!-- ******************************************************** -->
<!-- frequently tuned properties -->
<!-- ******************************************************** -->
<property name="absoluteBeamWidth" value="500"/>
<property name="relativeBeamWidth" value="1E-80"/>
<property name="absoluteWordBeamWidth" value="20"/>
<property name="relativeWordBeamWidth" value="1E-60"/>
<property name="wordInsertionProbability" value="1E-16"/>
<property name="languageWeight" value="7.0"/>
<property name="silenceInsertionProbability" value=".1"/>
<property name="frontend" value="epFrontEnd"/>
<property name="recognizer" value="recognizer"/>
<property name="showCreations" value="false"/>
<!-- ******************************************************** -->
<!-- word recognizer configuration -->
<!-- ******************************************************** -->
<component name="recognizer"
type="edu.cmu.sphinx.recognizer.Recognizer">
<property name="decoder" value="decoder"/>
<propertylist name="monitors">
<item>accuracyTracker </item>
<item>speedTracker </item>
<item>memoryTracker </item>
<item>recognizerMonitor </item>
</propertylist>
</component>
<!-- ******************************************************** -->
<!-- The Decoder configuration -->
<!-- ******************************************************** -->
<component name="decoder" type="edu.cmu.sphinx.decoder.Decoder">
<property name="searchManager" value="wordPruningSearchManager"/>
<property name="featureBlockSize" value="50"/>
</component>
<!-- ******************************************************** -->
<!-- The Search Manager -->
<!-- ******************************************************** -->
<component name="wordPruningSearchManager"
type="edu.cmu.sphinx.decoder.search.WordPruningBreadthFirstSearchManager">
<property name="logMath" value="logMath"/>
<property name="linguist" value="lexTreeLinguist"/>
<property name="pruner" value="trivialPruner"/>
<property name="scorer" value="threadedScorer"/>
<property name="activeListManager" value="activeListManager"/>
<property name="growSkipInterval" value="0"/>
<property name="checkStateOrder" value="false"/>
<property name="buildWordLattice" value="true"/>
<property name="acousticLookaheadFrames" value="1.7"/>
<property name="relativeBeamWidth" value="${relativeBeamWidth}"/>
</component>
<!-- ******************************************************** -->
<!-- The Active Lists -->
<!-- ******************************************************** -->
<component name="activeListManager"
type="edu.cmu.sphinx.decoder.search.SimpleActiveListManager">
<propertylist name="activeListFactories">
<item>standardActiveListFactory</item>
<item>wordActiveListFactory</item>
<item>wordActiveListFactory</item>
<item>standardActiveListFactory</item>
<item>standardActiveListFactory</item>
<item>standardActiveListFactory</item>
</propertylist>
</component>
<component name="standardActiveListFactory"
type="edu.cmu.sphinx.decoder.search.PartitionActiveListFactory">
<property name="logMath" value="logMath"/>
<property name="absoluteBeamWidth" value="${absoluteBeamWidth}"/>
<property name="relativeBeamWidth" value="${relativeBeamWidth}"/>
</component>
<component name="wordActiveListFactory"
type="edu.cmu.sphinx.decoder.search.PartitionActiveListFactory">
<property name="logMath" value="logMath"/>
<property name="absoluteBeamWidth" value="${absoluteWordBeamWidth}"/>
<property name="relativeBeamWidth" value="${relativeWordBeamWidth}"/>
</component>
<!-- ******************************************************** -->
<!-- The Pruner -->
<!-- ******************************************************** -->
<component name="trivialPruner"
type="edu.cmu.sphinx.decoder.pruner.SimplePruner"/>
<!-- ******************************************************** -->
<!-- TheScorer -->
<!-- ******************************************************** -->
<component name="threadedScorer"
type="edu.cmu.sphinx.decoder.scorer.ThreadedAcousticScorer">
<property name="frontend" value="${frontend}"/>
</component>
<!-- ******************************************************** -->
<!-- The linguist configuration -->
<!-- ******************************************************** -->
<component name="lexTreeLinguist"
type="edu.cmu.sphinx.linguist.lextree.LexTreeLinguist">
<property name="logMath" value="logMath"/>
<property name="acousticModel" value="wsj"/>
<property name="languageModel" value="trigramModel"/>
<property name="dictionary" value="dictionary"/>
<property name="addFillerWords" value="false"/>
<property name="fillerInsertionProbability" value="1E-10"/>
<property name="generateUnitStates" value="false"/>
<property name="wantUnigramSmear" value="true"/>
<property name="unigramSmearWeight" value="1"/>
<property name="wordInsertionProbability"
value="${wordInsertionProbability}"/>
<property name="silenceInsertionProbability"
value="${silenceInsertionProbability}"/>
<property name="languageWeight" value="${languageWeight}"/>
<property name="unitManager" value="unitManager"/>
</component>
<!-- ******************************************************** -->
<!-- The Dictionary configuration -->
<!-- ******************************************************** -->
<component name="dictionary"
type="edu.cmu.sphinx.linguist.dictionary.FastDictionary">
<property name="dictionaryPath"
value="file:src/voxforge-en-0.4/etc/cmudict.0.7a"/>
<property name="fillerPath"
value="file:src/voxforge-en-0.4/model_parameters/voxforge_en_sphinx.cd_cont_5000/noisedict"/>
<property name="addSilEndingPronunciation" value="false"/>
<property name="wordReplacement" value="<sil>"/>
<property name="unitManager" value="unitManager"/>
</component>
<!-- ******************************************************** -->
<!-- The Language Model configuration -->
<!-- ******************************************************** -->
<component name="trigramModel"
type="edu.cmu.sphinx.linguist.language.ngram.large.LargeTrigramModel">
<property name="unigramWeight" value=".5"/>
<property name="maxDepth" value="3"/>
<property name="logMath" value="logMath"/>
<property name="dictionary" value="dictionary"/>
<property name="location" value="file:src/voxforge-en-0.4/wsj5k.DMP"/>
<!-- <property name="location" value="file:src/voxforge-Language/language_model.arpaformat.DMP"/>-->
</component>
<!-- ******************************************************** -->
<!-- The acoustic model configuration -->
<!-- ******************************************************** -->
<component name="wsj"
type="edu.cmu.sphinx.linguist.acoustic.tiedstate.TiedStateAcousticModel">
<property name="loader" value="wsjLoader"/>
<property name="unitManager" value="unitManager"/>
</component>
<component name="wsjLoader" type="edu.cmu.sphinx.linguist.acoustic.tiedstate.Sphinx3Loader">
<property name="logMath" value="logMath"/>
<property name="unitManager" value="unitManager"/>
<!-- <property name="location" value="file:src/hub4opensrc.cd_continuous_8gau"/>-->
<property name="location" value="file:src/voxforge-en-0.4/model_parameters/voxforge_en_sphinx.cd_cont_5000" />
<property name="dataLocation" value=""/>
</component>
<!-- ******************************************************** -->
<!-- The unit manager configuration -->
<!-- ******************************************************** -->
<component name="unitManager"
type="edu.cmu.sphinx.linguist.acoustic.UnitManager"/>
<!-- ******************************************************** -->
<!-- The frontend configuration -->
<!-- ******************************************************** -->
<component name="epFrontEnd" type="edu.cmu.sphinx.frontend.FrontEnd">
<propertylist name="pipeline">
<item>audioFileDataSource </item>
<item>dataBlocker </item>
<item>speechClassifier </item>
<item>speechMarker </item>
<item>nonSpeechDataFilter </item>
<item>preemphasizer </item>
<item>windower </item>
<item>fft </item>
<item>melFilterBank </item>
<item>dct </item>
<item>liveCMN </item>
<item>featureExtraction </item>
</propertylist>
</component>
<component name="audioFileDataSource" type="edu.cmu.sphinx.frontend.util.AudioFileDataSource"/>
<component name="microphone"
type="edu.cmu.sphinx.frontend.util.Microphone">
<property name="closeBetweenUtterances" value="false"/>
</component>
<component name="dataBlocker" type="edu.cmu.sphinx.frontend.DataBlocker"/>
<component name="speechClassifier"
type="edu.cmu.sphinx.frontend.endpoint.SpeechClassifier">
<property name="threshold" value="13"/>
</component>
<component name="nonSpeechDataFilter"
type="edu.cmu.sphinx.frontend.endpoint.NonSpeechDataFilter"/>
<component name="speechMarker"
type="edu.cmu.sphinx.frontend.endpoint.SpeechMarker">
<property name="speechTrailer" value="50"/>
</component>
<component name="preemphasizer"
type="edu.cmu.sphinx.frontend.filter.Preemphasizer"/>
<component name="windower"
type="edu.cmu.sphinx.frontend.window.RaisedCosineWindower"/>
<component name="fft"
type="edu.cmu.sphinx.frontend.transform.DiscreteFourierTransform"/>
<component name="melFilterBank"
type="edu.cmu.sphinx.frontend.frequencywarp.MelFrequencyFilterBank"/>
<component name="dct"
type="edu.cmu.sphinx.frontend.transform.DiscreteCosineTransform"/>
<component name="liveCMN"
type="edu.cmu.sphinx.frontend.feature.LiveCMN"/>
<component name="featureExtraction"
type="edu.cmu.sphinx.frontend.feature.DeltasFeatureExtractor"/>
<!-- ******************************************************* -->
<!-- monitors -->
<!-- ******************************************************* -->
<component name="accuracyTracker"
type="edu.cmu.sphinx.instrumentation.BestPathAccuracyTracker">
<property name="recognizer" value="${recognizer}"/>
<property name="showRawResults" value="false"/>
<property name="showAlignedResults" value="false"/>
</component>
<component name="memoryTracker"
type="edu.cmu.sphinx.instrumentation.MemoryTracker">
<property name="recognizer" value="${recognizer}"/>
<property name="showDetails" value="false"/>
<property name="showSummary" value="false"/>
</component>
<component name="speedTracker"
type="edu.cmu.sphinx.instrumentation.SpeedTracker">
<property name="recognizer" value="${recognizer}"/>
<property name="frontend" value="${frontend}"/>
<property name="showDetails" value="false"/>
</component>
<component name="recognizerMonitor"
type="edu.cmu.sphinx.instrumentation.RecognizerMonitor">
<property name="recognizer" value="${recognizer}"/>
<propertylist name="allocatedMonitors">
<item>configMonitor </item>
</propertylist>
</component>
<component name="configMonitor"
type="edu.cmu.sphinx.instrumentation.ConfigMonitor">
<property name="showConfig" value="false"/>
</component>
<!-- ******************************************************* -->
<!-- Miscellaneous components -->
<!-- ******************************************************* -->
<component name="logMath" type="edu.cmu.sphinx.util.LogMath">
<property name="logBase" value="1.0001"/>
<property name="useAddTable" value="true"/>
</component>
</config>
Is their anything wrong with my configuration ? Plz help....
回答1:
For Speech Recognition I have decided to use sphinx4, I am trying to run the demo Transcriber.jar provided with sphinx. That doesn't work when I give some other file as input.
If you describe your issues better you could get more definite help on this problem
How do I proceed ?
Read the tutorial
http://cmusphinx.sourceforge.net/wiki/tutorial
Where do I get the language model for US English that can be used with Sphinx4 ?
You can download them from CMUSphinx website and from other places. You can also build them yourself. One of the possible locations are
http://www.keithv.com/software/csr/
Any blog / tutorial will be helpful,
See above
However the files used in this tutorial are of differrent extensions, I am stuck in this phase I cant decide which path should be given in configuration. Plz Help,
See the example config in sphinx4/tests/performance/voxforge_en/voxforge.config.xml. It has all required paths
来源：https://stackoverflow.com/questions/8727389/dictation-application-using-sphinx4