ios - 如何使用 Superpowered 从麦克风进行实时音高转换？

这个问题在这里已经有了答案:

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Best Answer-推荐答案

我做了以下事情:

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;
}

这在改变速度时也可能无法正常工作，但我只想要实时音高变换。人们应该能够自己说得慢或快。

关于ios - 如何使用 Superpowered 从麦克风进行实时音高转换？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/47222165/