ios - AVAudio 的最佳麦克风录音设置是什么？
<p><p>所以我有当前的代码:</p>
<pre><code>- (void)viewDidLoad
{
;
//for recording audio
_stopButton.enabled = NO;
_playButton.hidden = true;
NSArray *dirPaths;
NSString *docsDir;
dirPaths = NSSearchPathForDirectoriesInDomains(
NSDocumentDirectory, NSUserDomainMask, YES);
docsDir = dirPaths;
NSString *soundFilePath = [docsDir
stringByAppendingPathComponent:@"recording.caf"];
NSURL *soundFileURL = ;
NSDictionary *recordSettings = [NSDictionary dictionaryWithObjectsAndKeys:
, AVFormatIDKey,
, AVSampleRateKey,
, AVNumberOfChannelsKey,
, AVSampleRateConverterAudioQualityKey,
, AVEncoderBitRateKey,
, AVEncoderBitDepthHintKey,
nil];
NSError *error = nil;
AVAudioSession *audioSession = ;
[audioSession setCategory:AVAudioSessionCategoryPlayAndRecord
error:nil];
_audioRecorder = [
initWithURL:soundFileURL
settings:recordSettings
error:&error];
if (error)
{
NSLog(@"error: %@", );
} else {
;
}
//----------------------------
//end
}
</code></pre>
<hr/>
<p>还有玩家:</p>
<pre><code>- (IBAction)playAudio:(id)sender {
;
if (!_audioRecorder.recording)
{
_stopButton.enabled = YES;
_recordButton.enabled = NO;
NSError *error;
_audioPlayer = [
initWithContentsOfURL:_audioRecorder.url
error:&error];
_audioPlayer.volume = 5;
_audioPlayer.delegate = self;
if (error)
NSLog(@"Error: %@",
);
else
;
}else{
NSLog(@"errormax");
}
}
</code></pre>
<p>我在 <code>5</code> 有 <code>_audioPlayer.volume</code>，因为再低一点，你就几乎看不到它了。但在那个音量下，它看起来和听起来都非常失真。为什么它听起来不像“语音备忘录”，它以合理的音量播放而不会失真？</p>
<p>什么是最好的质量设置？</p></p>
<br><hr><h1><strong>Best Answer-推荐答案</ strong></h1><br>
<p><p>我个人更喜欢 PCM 编码，我使用它的质量更好。</p>
<p>尝试:</p>
<pre><code>NSDictionary *recordSettings =
[NSDictionary dictionaryWithObjectsAndKeys:
, AVFormatIDKey,
, AVSampleRateKey,
, AVNumberOfChannelsKey,
, AVLinearPCMBitDepthKey,
, AVLinearPCMIsBigEndianKey,
, AVLinearPCMIsFloatKey,
nil];
</code></pre>
<p>或使其更具可读性:</p>
<pre><code>NSDictionary * recordSetting;
recordSetting = [ init];
forKey:AVFormatIDKey];
forKey:AVSampleRateKey];
forKey:AVNumberOfChannelsKey];
forKey:AVLinearPCMBitDepthKey];
forKey:AVLinearPCMIsBigEndianKey];
forKey:AVLinearPCMIsFloatKey];
</code></pre>
<p>像这样调整你的函数:</p>
<pre><code>- (IBAction)playAudio:(id)sender {
;
if (!_audioRecorder.recording)
{
_stopButton.enabled = YES;
_recordButton.enabled = NO;
//force the session to play to come out of speakers!
UInt32 sessionCategory = kAudioSessionCategory_MediaPlayback;
AudioSessionSetProperty(kAudioSessionProperty_AudioCategory, sizeof(sessionCategory), &sessionCategory);
UInt32 audioRouteOverride = kAudioSessionOverrideAudioRoute_Speaker;
AudioSessionSetProperty (kAudioSessionProperty_OverrideAudioRoute,sizeof (audioRouteOverride),&audioRouteOverride);
NSError *error;
_audioPlayer = [
initWithContentsOfURL:_audioRecorder.url
error:&error];
_audioPlayer.delegate = self;
;
if (error)
NSLog(@"Error: %@",
);
else
;
}else{
NSLog(@"errormax");
}
}
</code></pre></p>
<p style="font-size: 20px;">关于ios - AVAudio 的最佳麦克风录音设置是什么？，我们在Stack Overflow上找到一个类似的问题：
<a href="https://stackoverflow.com/questions/23323928/" rel="noreferrer noopener nofollow" style="color: red;">
https://stackoverflow.com/questions/23323928/
</a>
</p>
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