使用PocketSphinx识别多个关键字
使用PocketSphinx识别多个关键字
提问于 2014-09-09 23:11:30
我已经安装了PocketSphinx演示，它在Ubuntu和Eclipse下运行得很好，但尽管我试了试，我还是想不出如何添加对多个单词的识别。
我想要的是让代码识别单个单词，然后我可以在代码中向下，例如"up"，“switch()”，"left"，"right“。我不想识别句子，只想识别单个单词。
在这方面的任何帮助都将不胜感激。我发现其他用户也有类似的问题，但到目前为止还没有人知道答案。
有一件事让我很困惑，那就是为什么我们需要使用“唤醒”常量呢？
private static final String KWS_SEARCH = "wakeup";
private static final String KEYPHRASE = "oh mighty computer";
.
.
.
recognizer.addKeyphraseSearch(KWS_SEARCH, KEYPHRASE);wakeup和任何事情有什么关系？
但是，任何其他单词都将使系统匹配所说的与所述单词“最接近”的单词。理想情况下，如果所说的单词不在.gram文件中，我不希望出现识别...
回答 3
Stack Overflow用户
回答已采纳
发布于 2014-09-10 00:10:13
您可以使用addKeywordSearch，它使用关键短语对文件进行归档。例如，每行一个短语，//中每个短语的阈值
up /1.0/
down /1.0/
left /1.0/
right /1.0/
forwards /1e-1/必须选择阈值，以避免误报警。
Stack Overflow用户
发布于 2014-09-10 00:06:19
多亏了Nikolay的建议(参见上面他的回答)，我开发了以下代码，它工作得很好，除非单词在列表中，否则无法识别它们。您可以将其直接复制并粘贴到PocketSphinxDemo代码中的主类上：
public class PocketSphinxActivity extends Activity implements RecognitionListener
{
private static final String DIGITS_SEARCH = "digits";
private SpeechRecognizer recognizer;
@Override
public void onCreate(Bundle state)
{
super.onCreate(state);
setContentView(R.layout.main);
((TextView) findViewById(R.id.caption_text)).setText("Preparing the recognizer");
try
{
Assets assets = new Assets(PocketSphinxActivity.this);
File assetDir = assets.syncAssets();
setupRecognizer(assetDir);
}
catch (IOException e)
{
// oops
}
((TextView) findViewById(R.id.caption_text)).setText("Say up, down, left, right, forwards, backwards");
reset();
}
@Override
public void onPartialResult(Hypothesis hypothesis)
{
}
@Override
public void onResult(Hypothesis hypothesis)
{
((TextView) findViewById(R.id.result_text)).setText("");
if (hypothesis != null)
{
String text = hypothesis.getHypstr();
makeText(getApplicationContext(), text, Toast.LENGTH_SHORT).show();
}
}
@Override
public void onBeginningOfSpeech()
{
}
@Override
public void onEndOfSpeech()
{
reset();
}
private void setupRecognizer(File assetsDir)
{
File modelsDir = new File(assetsDir, "models");
recognizer = defaultSetup().setAcousticModel(new File(modelsDir, "hmm/en-us-semi"))
.setDictionary(new File(modelsDir, "dict/cmu07a.dic"))
.setRawLogDir(assetsDir).setKeywordThreshold(1e-20f)
.getRecognizer();
recognizer.addListener(this);
File digitsGrammar = new File(modelsDir, "grammar/digits.gram");
recognizer.addKeywordSearch(DIGITS_SEARCH, digitsGrammar);
}
private void reset()
{
recognizer.stop();
recognizer.startListening(DIGITS_SEARCH);
}
}您的digits.gram文件应该类似于：
up /1e-1/
down /1e-1/
left /1e-1/
right /1e-1/
forwards /1e-1/
backwards /1e-1/您应该试验双斜杠//中的阈值以提高性能，其中1e-1表示0.1 (我认为)。我认为最大值是1.0。
现在是下午5点半，所以我现在可以停止工作了。结果。
Stack Overflow用户
发布于 2019-04-24 13:29:28
正在更新PocketSphinx演示的Antinous修正案，以使其能够在Android Studio上运行。这就是我目前所掌握的，
//Note: change MainActivity to PocketSphinxActivity for demo use...
public class MainActivity extends Activity implements RecognitionListener {
private static final String DIGITS_SEARCH = "digits";
private SpeechRecognizer recognizer;
/* Used to handle permission request */
private static final int PERMISSIONS_REQUEST_RECORD_AUDIO = 1;
@Override
public void onCreate(Bundle state) {
super.onCreate(state);
setContentView(R.layout.main);
((TextView) findViewById(R.id.caption_text))
.setText("Preparing the recognizer");
// Check if user has given permission to record audio
int permissionCheck = ContextCompat.checkSelfPermission(getApplicationContext(), Manifest.permission.RECORD_AUDIO);
if (permissionCheck != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.RECORD_AUDIO}, PERMISSIONS_REQUEST_RECORD_AUDIO);
return;
}
new AsyncTask<Void, Void, Exception>() {
@Override
protected Exception doInBackground(Void... params) {
try {
Assets assets = new Assets(MainActivity.this);
File assetDir = assets.syncAssets();
setupRecognizer(assetDir);
} catch (IOException e) {
return e;
}
return null;
}
@Override
protected void onPostExecute(Exception result) {
if (result != null) {
((TextView) findViewById(R.id.caption_text))
.setText("Failed to init recognizer " + result);
} else {
reset();
}
}
}.execute();
((TextView) findViewById(R.id.caption_text)).setText("Say one, two, three, four, five, six...");
}
/**
* In partial result we get quick updates about current hypothesis. In
* keyword spotting mode we can react here, in other modes we need to wait
* for final result in onResult.
*/
@Override
public void onPartialResult(Hypothesis hypothesis) {
if (hypothesis == null) {
return;
} else if (hypothesis != null) {
if (recognizer != null) {
//recognizer.rapidSphinxPartialResult(hypothesis.getHypstr());
String text = hypothesis.getHypstr();
if (text.equals(DIGITS_SEARCH)) {
recognizer.cancel();
performAction();
recognizer.startListening(DIGITS_SEARCH);
}else{
//Toast.makeText(getApplicationContext(),"Partial result = " +text,Toast.LENGTH_SHORT).show();
}
}
}
}
@Override
public void onResult(Hypothesis hypothesis) {
((TextView) findViewById(R.id.result_text)).setText("");
if (hypothesis != null) {
String text = hypothesis.getHypstr();
makeText(getApplicationContext(), "Hypothesis" +text, Toast.LENGTH_SHORT).show();
}else if(hypothesis == null){
makeText(getApplicationContext(), "hypothesis = null", Toast.LENGTH_SHORT).show();
}
}
@Override
public void onDestroy() {
super.onDestroy();
recognizer.cancel();
recognizer.shutdown();
}
@Override
public void onBeginningOfSpeech() {
}
@Override
public void onEndOfSpeech() {
reset();
}
@Override
public void onTimeout() {
}
private void setupRecognizer(File assetsDir) throws IOException {
// The recognizer can be configured to perform multiple searches
// of different kind and switch between them
recognizer = defaultSetup()
.setAcousticModel(new File(assetsDir, "en-us-ptm"))
.setDictionary(new File(assetsDir, "cmudict-en-us.dict"))
// .setRawLogDir(assetsDir).setKeywordThreshold(1e-20f)
.getRecognizer();
recognizer.addListener(this);
File digitsGrammar = new File(assetsDir, "digits.gram");
recognizer.addKeywordSearch(DIGITS_SEARCH, digitsGrammar);
}
private void reset(){
recognizer.stop();
recognizer.startListening(DIGITS_SEARCH);
}
@Override
public void onError(Exception error) {
((TextView) findViewById(R.id.caption_text)).setText(error.getMessage());
}
public void performAction() {
// do here whatever you want
makeText(getApplicationContext(), "performAction done... ", Toast.LENGTH_SHORT).show();
}
}买者警告:这是一项正在进行中的工作。稍后再来查看。如有建议，将不胜感激。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/25748113
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