# Process audio chunk by chunk. On keyphrase detected perform action and restart search
decoder = Decoder(config)
decoder.start_utt()
while True:
buf = stream.read(1024)
if buf:
decoder.process_raw(buf, False, False)
else:
break
if decoder.hyp() != None:
print ([(seg.word, seg.prob, seg.start_frame, seg.end_frame) for seg in decoder.seg()])
print ("Detected keyphrase, restarting search")
decoder.end_utt()
decoder.start_utt()
ps_set_keyphrase(ps, "keyphrase_search", "oh mighty computer");
ps_set_search(ps, "keyphrase_search);
ps_start_utt();
/* process data */
You can also find examples for Python and Android/Java in our sources. Python code looks like this, full example here:
# Process audio chunk by chunk. On keyphrase detected perform action and restart search
decoder = Decoder(config)
decoder.start_utt()
while True:
buf = stream.read(1024)
if buf:
decoder.process_raw(buf, False, False)
else:
break
if decoder.hyp() != None:
print ([(seg.word, seg.prob, seg.start_frame, seg.end_frame) for seg in decoder.seg()])
print ("Detected keyphrase, restarting search")
decoder.end_utt()
decoder.start_utt()
Threshold must be tuned for every keyphrase on a test data to get the right balance missed detections and false alarms. You can try values like 1e-5 to 1e-50.
For the best accuracy it is better to have keyphrase with 3-4 syllables. Too short phrases are easily confused.
You can also search for multiple keyphrase, create a file keyphrase.list like this:
oh mighty computer /1e-40/
hello world /1e-30/
other_phrase /other_phrase_threshold/
And use it in decoder with -kws configuration option.
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CMUSphinx 在 pocketsphinx 引擎中实现关键字识别，详细信息请参见 常见问题解答条目。
要识别单个关键词，您可以在“关键词搜索”模式下运行解码器。
从命令行尝试：
从代码：
您还可以在我们的源代码中找到 Python 和 Android/Java 的示例。 Python 代码如下所示，完整示例此处：
必须针对测试数据上的每个关键短语调整阈值，以获得漏检和误报之间的适当平衡。您可以尝试 1e-5 到 1e-50 等值。
为了获得最佳准确性，最好使用 3-4 个音节的关键短语。太短的短语很容易混淆。
您还可以搜索多个关键词，创建一个文件 keyphrase.list，如下所示：
并在带有 -kws 配置选项的解码器中使用它。
sphinx4 解码器尚未实现此功能。
CMUSphinx implements keyword spotting in pocketsphinx engine, see for details the FAQ entry.
To recognize a single keyphrase you can run decoder in “keyphrase search” mode.
From command line try:
From the code:
You can also find examples for Python and Android/Java in our sources. Python code looks like this, full example here:
Threshold must be tuned for every keyphrase on a test data to get the right balance missed detections and false alarms. You can try values like 1e-5 to 1e-50.
For the best accuracy it is better to have keyphrase with 3-4 syllables. Too short phrases are easily confused.
You can also search for multiple keyphrase, create a file keyphrase.list like this:
And use it in decoder with -kws configuration option.
This feature is not yet implemented in sphinx4 decoder.