SuperpoweredMixer 仪表值

Question

我有一个由两部分组成的问题。下面是我的 audioProcessing 回调的不完整版本以提供上下文。

1) 对于 SuperpoweredStereoMixer->process，文档指出 "inputMeters" 和 "outputMeters" 参数 "Returns the maximum values for metering." 和 SuperpoweredPeak 函数 "Returns the peak value." 是 Peak 函数和调音台的仪表值相同吗？我想是的，我只是想确认一下。

2) 当我增加或减少 self->inputLevelsA 中的输入音量时，我可以按预期看到 self->outputMeters increase/decrease 中返回的仪表值。但是，我没有在 self->inputMetersA 中看到值 increase/decrease。事实上，当我将 inputLevelsA 中的音量减小到 0.0f 时，我根本没有看到输入仪表值减少。 SuperpoweredStereoMixer->process 是在将输入音量电平应用到信号之前还是之后返回输入电平表值？

谢谢！

static bool audioProcessing(void *clientdata, float **inputBuffers, unsigned int inputChannels, float **outputBuffers, unsigned int outputChannels, unsigned int numberOfSamples, unsigned int samplerate, uint64_t hostTime) {
    __unsafe_unretained SuperpoweredFrequencies *self = (__bridge SuperpoweredFrequencies *)clientdata;
  hasAudio1 = self->player1->process(self->musicInterleavedBuffer1, false, numberOfSamples, 1.0f);
    hasAudio2 = self->player2->process(self->musicInterleavedBuffer2, false, numberOfSamples, 1.0f);

    SuperpoweredInterleave(inputBuffers[0], inputBuffers[1], self->microphoneInterleavedBuffer, numberOfSamples);
self->inputsA[0] = self->musicInterleavedBuffer1; 
    self->inputsA[1] = self->musicInterleavedBuffer2; 
    self->inputsA[2] = self->microphoneInterleavedBuffer;
    self->inputsA[3] = NULL;
    self->outputsA[0] = self->outputInterleavedBufferA;
    self->outputsA[1] = NULL;
    self->stereoMixerA->process(self->inputsA, self->outputsA, self->inputLevelsA, self->outputLevelsA, self->inputMetersA, self->outputMeters, numberOfSamples);


SuperpoweredDeInterleave(self->outputsA[0], outputBuffers[0], outputBuffers[1], numberOfSamples);
hasAudio = hasAudio1 || hasAudio2 || micHasAudio;
    return hasAudio;
}

Answer 1

1) 是的，SuperpoweredPeak returns 具有相同的值。 2) 是的，inputMeters 将在混音前测量响度。输出计测量输出的响度。

SuperpoweredMixer 仪表值

SuperpoweredMixer Meter Values

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