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audiowavecanvas's Introduction

非常感谢的大家的支持,我发现大家很多项目都需要这个功能,为此我决定将重写这个项目,支持多种格式的支持,重新写封装方便定制你们的需求,同时我会加入音频fft支持(加入用户是否说话,截幅等验证)。请求期待... 如果你有什么好的想法可以给我提出。

audioWaveCanvas

这是一个录音实时录制绘制波形,最后转成整个波形的例子。 最近老是有人问我音频相关的一些东西,其实我也理解的很浅显。为了方便给位能够快速了解,给出一个,实时绘制波形的demo,录音完成加入整个完整波形的demo. 已经加入音频相似度 打分 比对 之后会加入变声 频谱绘制等功能

image

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audiowavecanvas's Issues

licese reqiurement

Can you please grant a permissive license for your project, such as MIT?

文件夹没有创建

运行会提示
java.io.FileNotFoundException: /storage/emulated/0/record/test.pcm: open failed: ENOENT (No such file or directory)

可能你的文件夹之前创建过... 可是adb删除以后运行看一下

小米4c上录音有杂音

小米4c上使用这个demo进行录音,录下来的都是杂音,听不清话。我的小米4c是安卓7.0的。另外,放在小米5s上就没问题了,录音比较清楚。

空指针异常

NullPointerException
WaveformView.millisecsToPixels(int)' on a null object reference
播放录制内容,更新waveView的时候

关于getSamplesPerFrame

// Should be removed when the app will use directly the samples instead of the frames.
public int getSamplesPerFrame() {
return 1024; // just a fixed value here...
}
我想知道一下,如果使用自己的PerFrame,需要怎么修改。如果使用这个,我用本地的音频去加载。在ReadFile的时候,下面这部分代码会执行几十万上百万次。
for (i=0; i<mNumFrames; i++){
gain = -1;
for(j=0; j<getSamplesPerFrame(); j++) {
value = 0;
for (int k=0; k<mChannels; k++) {
if (mDecodedSamples.remaining() > 0) {
value += Math.abs(mDecodedSamples.get());
}
}
value /= mChannels;
if (gain < value) {
gain = value;
}
}
mFrameGains[i] = (int)Math.sqrt(gain); // here gain = sqrt(max value of 1st channel)...
mFrameLens[i] = frameLens; // totally not accurate...
mFrameOffsets[i] = (int)(i * (1000 * mAvgBitRate / 8) * // = i * frameLens
((float)getSamplesPerFrame() / mSampleRate));
}

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