如何在 iPhone 应用程序中录制和播放声音?

How to record and play sound in iPhone app?(如何在 iPhone 应用程序中录制和播放声音?)

问题描述

我尝试使用 AVAudioSession 和 AVAudioPlayer 分别录制和播放声音，但音量非常低.

I tried using AVAudioSession and AVAudioPlayer to record and play sounds respectively but the sound volume is very low.

我尝试将 AVAudioPlayer 的音量值设置为 1.0 或更高，但没有太大帮助.

I tried putting volume value of AVAudioPlayer to 1.0 and more but didn't help much.

我还有哪些其他选择可以录制足够大的声音以进行播放?

What could be my other options to record sound which can be loud enough to play back?

推荐答案

这段代码应该对你有用:

This code should be useful for you:

#import <AudioToolbox/AudioServices.h>

    UInt32 audioRouteOverride = kAudioSessionOverrideAudioRoute_Speaker;                
    AudioSessionSetProperty (kAudioSessionProperty_OverrideAudioRoute,          
                                 sizeof (audioRouteOverride),&audioRouteOverride);  

它会增加音量.该代码的功能是将普通声音转换为您 iPhone 上的扬声器声音.这就是使用 kAudioSessionOverrideAudioRoute_Speaker 的原因.

It will increase volume. The functionality of the code is to convert the ordinary sound to speaker sound on ur iPhone. That's why kAudioSessionOverrideAudioRoute_Speaker is used.

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