Ios 如何使用Superpowered从麦克风实时切换音高？

我正在尝试使用superpowerd从麦克风实时切换音高。我查看了该文件的示例。也试着去适应它。我设法改变了声音，但由于受到干扰，声音变得非常失真。我做错了什么？在哪里可以找到更多关于超能力和时间限制的信息

    static bool audioProcessing(void *clientdata,
                            float **buffers,
                            unsigned int inputChannels,
                            unsigned int outputChannels,
                            unsigned int numberOfSamples,
                            unsigned int samplerate,
                            uint64_t hostTime) {
    __unsafe_unretained Superpowered *self = (__bridge Superpowered *)clientdata;

    float tempBuffer[numberOfSamples * 2 + 16];
    SuperpoweredInterleave(buffers[0], buffers[1], tempBuffer, numberOfSamples);
    float *outputBuffer = tempBuffer;

    SuperpoweredAudiobufferlistElement inputBuffer;

    inputBuffer.samplePosition = 0;

    inputBuffer.startSample = 0;
    inputBuffer.samplesUsed = 0;
    inputBuffer.endSample = self->timeStretcher->numberOfInputSamplesNeeded;
    inputBuffer.buffers[0] = SuperpoweredAudiobufferPool::getBuffer(self->timeStretcher->numberOfInputSamplesNeeded * 8 + 64);
    inputBuffer.buffers[1] = inputBuffer.buffers[2] = inputBuffer.buffers[3] = NULL;

    memcpy((float *)inputBuffer.buffers[0], outputBuffer, numberOfSamples * 2 + 16);

    self->timeStretcher->process(&inputBuffer, self->outputBuffers);

    // Do we have some output?
    if (self->outputBuffers->makeSlice(0, self->outputBuffers->sampleLength)) {
        while (true) {  // Iterate on every output slice.
            // Get pointer to the output samples.
            int sampleCount = 0;
            float *timeStretchedAudio = (float *)self->outputBuffers->nextSliceItem(&sampleCount);
            if (!timeStretchedAudio) break;
            SuperpoweredDeInterleave(timeStretchedAudio, buffers[0], buffers[1], numberOfSamples);
        };

        // Clear the output buffer list.
        self->outputBuffers->clear();
    };

    return true;
}

我做了以下工作：

static bool audioProcessing(void *clientdata,
                                float **buffers,
                                unsigned int inputChannels,
                                unsigned int outputChannels,
                                unsigned int numberOfSamples,
                                unsigned int samplerate,
                                uint64_t hostTime) {
    __unsafe_unretained Superpowered *self = (__bridge Superpowered *)clientdata;

    SuperpoweredAudiobufferlistElement inputBuffer;
    inputBuffer.startSample = 0;
    inputBuffer.samplesUsed = 0;
    inputBuffer.endSample = numberOfSamples;
    inputBuffer.buffers[0] = SuperpoweredAudiobufferPool::getBuffer((unsigned int) (numberOfSamples * 8 + 64));
    inputBuffer.buffers[1] = inputBuffer.buffers[2] = inputBuffer.buffers[3] = NULL;

    SuperpoweredInterleave(buffers[0], buffers[1], (float *)inputBuffer.buffers[0], numberOfSamples);

    self->timeStretcher->process(&inputBuffer, self->outputBuffers);

    // Do we have some output?
    if (self->outputBuffers->makeSlice(0, self->outputBuffers->sampleLength)) {
        while (true) { // Iterate on every output slice.
            // Get pointer to the output samples.
            int numSamples = 0;
            float *timeStretchedAudio = (float *)self->outputBuffers->nextSliceItem(&numSamples);
            if (!timeStretchedAudio || *timeStretchedAudio == 0) {
                break;
            }

            SuperpoweredDeInterleave(timeStretchedAudio, buffers[0], buffers[1], numSamples);
        }
        // Clear the output buffer list.
        self->outputBuffers->clear();
    }

    return true;
}

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当改变速度时，这可能无法正常工作，但我只希望现场变桨。人们自己应该能说得慢一点或快一点。

我差点就说出来了！非常感谢你！