HGS10语音识别模块工作原理
时间: 2024-04-12 15:23:56 浏览: 29
HGS10语音识别模块是一种基于语音识别技术的硬件设备,它可以将人的语音信号转化为文字信息。其工作原理如下:
1. 音频采集:HGS10模块首先通过麦克风或其他音频输入设备采集到人的语音信号。
2. 信号预处理:采集到的语音信号需要进行预处理,包括去除噪声、增强语音信号等操作,以提高后续的语音识别准确性。
3. 特征提取:经过预处理后,语音信号被转化为一系列特征向量。常用的特征提取方法包括MFCC(Mel频率倒谱系数)和PLP(Perceptual Linear Prediction)等。
4. 声学模型匹配:HGS10模块使用训练好的声学模型对提取到的特征向量进行匹配。声学模型通常是基于隐马尔可夫模型(HMM)和深度神经网络(DNN)等算法构建的。
5. 语言模型匹配:在声学模型匹配的基础上,HGS10模块还会使用语言模型对识别结果进行进一步的优化和校正。语言模型可以根据语法规则和上下文信息来提高识别准确性。
6. 文字输出:经过声学模型和语言模型的匹配,HGS10模块最终将语音信号转化为文字信息,并输出给用户使用。
相关问题
select year,sum(nvl(case when jclx='1' then jccs end,0)) as rcjcjccs,sum(nvl(case when jclx='1' then jccs end,0))-sum(nvl(case when jclx='1' then hgs end,0)) as rcjcbhgs ,sum(nvl(case when jclx='2' then jccs end,0)) as zxjcjccs,sum(nvl(case when jclx='2' then jccs end,0))-sum(nvl(case when jclx='2' then hgs end,0)) as zxjcbhgs ,sum(nvl(case when jclx='3' then jccs end,0)) as fxjcjccs,sum(nvl(case when jclx='3' then jccs end,0))-sum(nvl(case when jclx='3' then hgs end,0)) as fxjcbhgs ,sum(nvl(case when jclx='4' then jccs end,0)) as xkjcjccs,sum(nvl(case when jclx='4' then jccs end,0))-sum(nvl(case when jclx='4' then hgs end,0)) as xkjcbhgs ,sum(nvl(case when jclx='5' then jccs end,0)) as zgfccs,sum(nvl(case when jclx='5' then jccs end,0))-sum(nvl(case when jclx='5' then hgs end,0)) as zgfcbhgs ,sum(nvl(case when jclx='7' then jccs end,0)) as txjcjccs,sum(nvl(case when jclx='7' then jccs end,0))-sum(nvl(case when jclx='7' then hgs end,0)) as txjcbhgs ,sum(nvl(case when jclx='9' then jccs end,0)) as sjjcjccs,sum(nvl(case when jclx='9' then jccs end,0))-sum(nvl(case when jclx='9' then hgs end,0)) as sjjcbhgs ,sum(nvl(case when jclx='10' then jccs end,0)) as yyjcjccs,sum(nvl(case when jclx='10' then jccs end,0))-sum(nvl(case when jclx='10' then hgs end,0)) as yyjcbhgs ,sum(nvl(case when jclx='11' then jccs end,0)) as zchcjccs,sum(nvl(case when jclx='11' then jccs end,0))-sum(nvl(case when jclx='11' then hgs end,0)) as zchcbhgs ,sum(nvl(case when jclx='12' then jccs end,0)) as bahcjccs,sum(nvl(case when jclx='12' then jccs end,0))-sum(nvl(case when jclx='12' then hgs end,0)) as bahcbhgs from ( select case when jcbz='1' then '5' else jclx end as jclx, year,jccs,hgs from ( select rec.jclx,rec.jcbz, rec.year, COUNT( rec.ID ) AS jccs, SUM( CASE aa10.AAA103 WHEN '不符合' THEN '0' ELSE '1' END) as hgs from t_inspect_record rec join AMR_ENTERPRISE.t_pub_enterprise ent on rec.ztlsh = ent.id JOIN aa10a1 aa10 ON ( rec.JCJG = aa10.AAA102 AND aa10.AAA100 = 'JCJG' ) WHERE rec.ZT = 1 AND rec.STATUS = 1 and (rec.sszy='10' or rec.sszy='11') group by rec.jclx,rec.jcbz,rec.year order by rec.jclx,rec.jcbz,rec.year) ) where 1=1 and year=':year' group by year order by year 以上是一个sql,我想通过正则表达式,以from、join为关键字,分析出查询sql中涉及的表名
可以使用正则表达式来解析出SQL查询语句中涉及到的表名。以下是一个示例正则表达式:
```
/(from|join)\s+(\w+)/i
```
该正则表达式可以匹配以`from`和`join`关键字开始后面跟着一个或多个单词的字符串。其中,`\s+`匹配空格或制表符,`\w+`匹配一个或多个字母、数字或下划线。
使用该正则表达式,可以在PHP中使用`preg_match_all`函数来解析出SQL查询语句中涉及到的表名,如下所示:
```php
$sql = "SELECT year, sum(...) FROM t_inspect_record rec JOIN AMR_ENTERPRISE.t_pub_enterprise ent ON rec.ztlsh = ent.id WHERE 1=1 AND year=':year' GROUP BY year ORDER BY year";
preg_match_all('/(from|join)\s+(\w+)/i', $sql, $matches);
$tables = array_unique($matches[2]);
print_r($tables);
```
该代码会输出SQL查询语句中涉及到的所有表名,如`"t_inspect_record"`,`"AMR_ENTERPRISE.t_pub_enterprise"`等。其中,`array_unique`函数用于去重。
css translation
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