Question

我有以下用于在android中录制音频/语音的代码：

MediaRecorder recorder=new MediaRecorder();
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setAudioEncodingBitRate(16);
recorder.setAudioSamplingRate(44100);
recorder.setOutputFile(Environment.getExternalStorageDirectory() + File.separator
                    + Environment.DIRECTORY_DCIM + File.separator + "WAVES.amr");

try {
       recorder.prepare();
       recorder.start();
} catch (IOException e) {
       Toast.makeText(topic_player_list_layout.this,"Unable to record",Toast.LENGTH_SHORT).show();
       return;
            }

问题是，与默认的Android语音记录器应用或whatsApp/Telegram voice recorder相比，记录的音频文件质量输出不佳。

你有什么建议？我该怎么做才能提高录音质量？

Answer 1

您必须增加audioEncodingBitRate

MediaRecorder recorder=new MediaRecorder();
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setAudioEncodingBitRate(128000);
recorder.setAudioSamplingRate(44100);

Answer 2

如果我们看一下文档：https://developer.android.com/reference/android/media/MediaRecorder.OutputFormat，我们可以看到有很多可用的音频格式。据我所知，您使用的objectReturnHelper: function() { var obj1 = 5; var obj2 = 10; return { obj1: _.range(0, obj1), obj2: _.range(0, obj2) }; } {{#each objectReturnHelper.obj1}} <p>TEST</p> {{/each}}不能提供最佳质量。我会考虑改用THREE_GPP。另外，请尝试使用MPEG_4代替AAC作为音频编码器。

也请查看此答案以获取更多参考：https://stackoverflow.com/a/14973295/5457878

如何提高android录制的语音质量

2 个答案: