<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:arial,helvetica,sans-serif;font-size:12pt"><div>Hi guys,<br><br>I would like to buy a speech database for speech recognition research. If you don't mind, can you recommend to me any good speech database.<br><br>Thanks to those reply my email.<br><br>Kind regards,<br><br>HADDAD<br></div><div style="font-family: arial,helvetica,sans-serif; font-size: 12pt;"><br><div style="border-left: 2px solid rgb(16, 16, 255); margin: 5px 0px 5px 5px; padding-left: 5px; font-family: times new roman,new york,times,serif; font-size: 12pt;">----- Original Message ----<br>From: MAK <m_klokov@mail.ru><br>To: seandunlevy <seandunlevy@yahoo.com><br>Cc: speechcoding@yahoogroups.com<br>Sent: Sunday, September 14, 2008 1:39:02 PM<br>Subject: Re: [speechcoding] Aysemetric Speech Encoding<br><br>
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<p>Hi, seandunlevy.<br>
<br>
> I'm looking into a low bit-rate speech compression route that I can <br>
> decompress using an ARM7 TDMI running at 33MHz. There will be no real-<br>
> time encoding required, so coding time (as long as it's not months) is<br>
> not important.<br>
> Virtually ALL encoders are designed around bidirectional sound whereas<br>
> this is purely for playback.<br>
<br>
The simplest solution for you is ADPCM (can be as low as 2-bit per sample)<br>
To get better compression you can use time scale modification like TDHS.<br>
I'm not sure if the 33MHz ARM can run recent codecs with performance requirements.<br>
Also most recent codecs use analysis-by- sinthesis method,<br>
so the encoder and decoder performances are quite the same.<br>
<br>
MAK mailto:<a rel="nofollow" ymailto="mailto:m_klokov%40mail.ru" target="_blank" href="mailto:m_klokov%40mail.ru">m_klokov@mail. ru</a><br>
<br>
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