AudioRecord无法无法获取音频源Could not get audio input for record source

如题，在使用AudioRecord录制音频时报错

08-01 10:35:17.734 9009-9009/com.example.myvoice E/AudioRecord: Could not get audio input for record source 8, sample rate 44100, format 0x1, channel mask 0xc, session 598, flags 0

08-01 10:35:17.734 9009-9009/com.example.myvoice E/AudioRecord-JNI: Error creating AudioRecord instance: initialization check failed with status -22.

08-01 10:35:17.735 9009-9009/com.example.myvoice E/android.media.AudioRecord: Error code -20 when initializing native AudioRecord object.

网上找了很久都没找到解决办法，完整代码参考了https://blog.csdn.net/jinzhuojun/article/details/33748031

权限设置如下
package="com.example.myvoice"
android:versionCode="1"
android:versionName="1.0">

<uses-permission android:name="android.permission.CAPTURE_AUDIO_OUTPUT" />
<uses-permission android:name="android.permission.CAPTURE_VIDEO_OUTPUT"/>
<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-sdk
    android:minSdkVersion="19"
    android:targetSdkVersion="19" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">
    <activity android:name=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
</application>

前两个权限设置会报错Permissions with the protection level signature, privileged or signatureOrSystem are only granted to system apps. If an app is a regular non-system app, it will never be able to use these permissions.


希望各位大神可以帮小白解决问题