通话过程中自动语音留言 [英] Automatic Voice Message during Phone call

问题描述

我开发使用Java的Andr​​oid应用程序。

I am developing an Android app with java.

我很好奇，如果有可能有一个自动语音消息（帮助，我需要一辆救护车），在通话中。我明白，一旦你拨打电话的方法离开应用程序打个电话。是否有可能运行一个文本到语音的功能，而在通话过程中？这样的电话呼叫可在电话呼叫期间拿起从文本到语音功能的音频

I was curious if it is possible to have an automatic voice message ("Help, I Need an Ambulance") during a phone call. I understand that once you call the phone call method it leaves the application to make a phone call. Is it possible to run a text-to-speech function while the phone call is in progress? That way the phone call can pick up the audio from the text-to-speech function during the phone call.

推荐答案

没有，这恐怕是不可能的。

No, I'm afraid this isn't possible.

有没有音频接口来进行电话呼叫，也没有任何其他接口与电话交互。甚至一些作为相对直接的像发送DTMF音调是不可能的，而不特别进入它们作为拨打该号码，以及基本动作如挂断呼叫的只能通过隐藏接口。

There is no audio interface for phone calls, nor any other interface for interacting with telephony. Even something as relatively straight-forward as sending DTMF tones isn't possible without specifically entering them as part of the number to dial, and a basic operation such as hanging up the call is only possible through hidden interfaces.

（虽然有 AudioManager.STREAM_VOICE_CALL ，它可以仅用于调节通话音量。）

(While there is AudioManager.STREAM_VOICE_CALL, it can only be used to regulate the in-call volume.)

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