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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>Hi
all and Jean-Marc,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'>Firstly
thanks a lot to you for helps, at last I accomplished to use speex-1.2beta1 in
my speech application. I try to understand speex source code and improve speech
quality. The problem in my application (like many people in the list says) is
noise. So I’ve added VAD in preprocessor as following<font color=navy><span
style='color:navy'>.</span></font> VAD in preprocessor is very good, there is
not noise outside speech. I don’t feel problem so much while continuous
speech, but when we speak for short intervals, the start of and end of
sentences have clatter (maybe clatter does not meet that sound, there is a
defect). To overcome this problem, are </span></font><font face="Courier New"><span
style='font-family:"Courier New"'>SPEEX_PREPROCESS_SET_PROB_START,
SPEEX_PREPROCESS_SET_PROB_CONTINUE </span></font>parameters or other anything useful?
<o:p></o:p></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=blue
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:blue'>int</span></font><font face="Courier New"><span style='font-family:
"Courier New"'> param_enabled = 1;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:blue'>int</span></font><font
face="Courier New"><span style='font-family:"Courier New"'> param_disabled = 0;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 color=blue face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New";color:blue'>int</span></font><font
face="Courier New"><span style='font-family:"Courier New"'> sampling_rate =
8000;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New"'>SpeexPreprocessState *preprocess;<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New"'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New"'>preprocess = speex_preprocess_state_init(frame_size,
sampling_rate); /* frame_size = 160 */<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>speex_preprocess_ctl(preprocess,
SPEEX_PREPROCESS_SET_DENOISE, &param_enabled);<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>speex_preprocess_ctl(preprocess,
SPEEX_PREPROCESS_SET_VAD, &param_enabled); <o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>speex_preprocess_ctl(preprocess,
SPEEX_PREPROCESS_SET_AGC, &param_disabled);<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'><o:p> </o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>/* inputAdd is address of
captured input voice (short *).<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>is_speech_in_preprocessor =
speex_preprocess(preprocess, inputAdd, <font color=blue><span style='color:
blue'>null</span></font>);<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 color=blue
face="Courier New"><span style='font-size:10.0pt;font-family:"Courier New";
color:blue'>if</span></font><font face="Courier New"><span style='font-family:
"Courier New"'> (is_speech_in_preprocessor != 0)<o:p></o:p></span></font></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>{<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face="Courier New"><span style='font-size:10.0pt;
font-family:"Courier New"'>
speex_encode_int(enc_state, inputAdd, bitsAdd);</span></font><o:p></o:p></p>
<p class=MsoNormal style='text-autospace:none'><font size=2 face="Courier New"><span
style='font-size:10.0pt;font-family:"Courier New"'>}<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt'>Thanks a lot in advance,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt'>Sincerely,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span lang=EN-US style='font-size:
10.0pt'>Yasemin<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt'><o:p> </o:p></span></font></p>
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