Both have been used in iphone apps, but the iphone friendly source isn't readily available.
As I edit this (8 July, 2009) I recently learned that Loquendo (http://www.loquendo.com/en/) has voice recognition and speech synthesis (ASR & TTS) for the iphone.
The Dragon Mobile SDK from Nuance does what is asked for. You need an internet connection to be able to send the audio to Nuance's server and you get a list of text responses. You can then decide what to do with the text responses (e.g. ask your user to choose the one he meant or perform some action). Here is the link:
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OpenEars 看起来很有前途......
http://www.politepix.com/openears/
基于 Pocket Sphinx。
OpenEars looks promising...
http://www.politepix.com/openears/
Based on Pocket Sphinx.
如果您从维基百科开始，您将获得一个很好的列表引擎（http:// en.wikipedia.org/wiki/Speech_recognition#Commercial_software.2Fmiddleware）
当我写这篇文章时（6 月 24 日， 2009）在我看来，这是两个可行的开源解决方案
两者已在 iPhone 应用程序中使用，但 iPhone 友好的源代码并不容易获得。
当我编辑这篇文章时（2009 年 7 月 8 日），我最近了解到 Loquendo (http://www.loquendo.com /en/）具有适用于 iPhone 的语音识别和语音合成（ASR 和 TTS）。
If you start here at wikipedia, you'll get a good list engines (http://en.wikipedia.org/wiki/Speech_recognition#Commercial_software.2Fmiddleware)
As I write this (June 24, 2009) it looks to me that are two viable open source solutions
Both have been used in iphone apps, but the iphone friendly source isn't readily available.
As I edit this (8 July, 2009) I recently learned that Loquendo (http://www.loquendo.com/en/) has voice recognition and speech synthesis (ASR & TTS) for the iphone.
最好的方法可能是：
The best approach will probably be to:
Nuance 的 Dragon Mobile SDK 可以满足要求。您需要互联网连接才能将音频发送到 Nuance 的服务器，并获得文本响应列表。然后，您可以决定如何处理文本响应（例如，要求您的用户选择他想要的内容或执行某些操作）。这是链接：
http://dragonmobile.nuancemobiledeveloper.com/
The Dragon Mobile SDK from Nuance does what is asked for. You need an internet connection to be able to send the audio to Nuance's server and you get a list of text responses. You can then decide what to do with the text responses (e.g. ask your user to choose the one he meant or perform some action). Here is the link:
http://dragonmobile.nuancemobiledeveloper.com/