FrequencyBands throws uncaught error

[jmarcosfer]

What is the issue about?

• Bug
• Feature request
• Usage question
• Documentation
• Contributing / Development

What part(s) of Essentia.js is involved?

• essentia.js-core (vanilla algorithms)
• essentia.js-model (machine learning algorithms)
• essentia.js-plot (plotting utility module)
• essentia.js-extractor (typical algorithm combinations utility)

Description

Using FrequencyBands algorithm with default or any other parameters throws an uncaught error.

Steps to reproduce / Code snippets / Screenshots

Example usage of the algo and possible solution in this glitch example. The bug is related to instantiating an empty VectorVectorFloat and using its size (which is zero) to loop through the contents of the frequencyBands parameter, which consequently never gets filled but is still passed to the WASM function.

System info

Dell Inc. Vostro 5490, Ubuntu 21.10, Chrome 105.0.5195.125 64-bit