VectorInput is insanely slow. Am I doing something wrong...?

[jamiebullock]

I'm using Essentia in streaming mode, using the C++ API.

If I feed my network with an EasyLoader, loading a 45 second WAV file, it takes less than a second to compute all the features.

However, if I load the the WAV into memory (std::vector<Real>) and then use a VectorInput<Real> to feed my network, it takes over 60 seconds to compute the features!

The networks are of the form:

VectorInput<Real> *input = new VectorInput<Real>(&audio);
Algorithm *frame  = factory.create("FrameCutter", "frameSize", 2048, "hopSize", 1024);

input->output("data") >> frame->("signal");
frame->output("frame") >> // other stuff

It just gets slower as I add more nodes the network, whereas EasyLoader is almost instant.

Any ideas?

[nolan-veed]

Hey @jamiebullock

My feeling is that your VectorInput<Real> is streaming it's output without much batching of audio samples.

The acquireSize defaults to 1, which means that your process() loop will be running more frequently - once per sample.

In the EasyLoader's Source<StereoSample> instance is configured for larger sized buffers.

Let me know, if that helps!