iOS版 - iPhone音量使用AVFoundation录制声音后低 [英] iOS - iPhone sound level low after recording sound using AVFoundation

问题描述

我有我的工作的职能，一个应用程序是记录通过 iPhone麦克风声音，并能够发挥它回到我身边。

I have an app that I'm working on that one of its functions is to record a sound through the iPhone microphone and be able to play it back to me.

问题：当我记录可以说，我说话例如，播放水平非常低。现在，我的确从 AudioToolbox 开关置于 AVFoundation ，这发生的开关之后。我需要code在 AVFoundation 体积参数？我没有看到的文档中的任何。

Problem: After I record lets say, me talking for example, the playback level is extremely low. Now I did switch from AudioToolbox to AVFoundation and this happened after the switch. Do I need to code in a volume parameter for AVFoundation? I'm not seeing anything in the documentation.

我AP preciate任何帮助。

I appreciate any help.

推荐答案

我已经解决了这个问题。在AppDelegate.m我在下面的 didFinishLaunchingWithOptions

I have solved this problem. In the AppDelegate.m I have the following in the didFinishLaunchingWithOptions

[[AVAudioSession sharedInstance] setCategory: AVAudioSessionCategoryPlayAndRecord error: &setAudioError]; 

if (setAudioError) { NSLog(@"error setting audio: %@", setAudioError); } 

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

的重要组成部分，在这里，是它不工作，因为我最初有 AVAudioSessionCategoryPlayer错误：放大器; setAudioError

一旦我把它改成了PlayandRecord我没有问题。

once I changed it to "PlayandRecord" I had no issues.

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