Evaluating Spatial Audio – Part 2 – Creating and Curating Content for Testing (Ceva’s Experts weblog – Kaushik Sethunath, Ceva)

In Part 1 of this matter of Evaluating Spatial Audio, we talked about what constitutes a ‘spatial audio’ product system, the important thing challenges concerned, goal and subjective technique of analysis, and a number of the key spatialization parameters to concentrate to. Make positive you take a look at that weblog submit, as this piece builds on the ideas coated in that one.

As a fast refresher, ‘Spatial Audio’ is a broad umbrella time period that’s used to explain an array of audio playback applied sciences, the place the first focus is to allow the listener to hear and expertise sound as we do in the actual world – in three dimensions.

It can also be essential to say that spatial audio is an inherently subjective psychoacoustic phenomenon that differs enormously from individual to individual, primarily based on their physiology. Everyone has their very own set of ears and physiology, distinctive to them, and accordingly, our listening to techniques and distinctive subjective listening experiences are finely tuned by our personal particular anatomy. You can learn extra about spatial audio right here.

Thus, with out even getting too far into the weeds on the subject of file codecs, channel orders and configurations, content material particular necessities and many others., we are able to see that the inherent subjectivity of the perceived expertise makes evaluating spatial audio tough.

There appears to be an absence of an business commonplace framework to judge the spatial audio expertise. Here at Ceva, we got down to develop such a framework, to judge spatial audio in a scientific and repeatable approach, offering a information for anybody to have the ability to gauge the efficacy of a spatial audio resolution.

We began by limiting ourselves to the shape issue of Android telephones and True Wireless Stereo (TWS) earbuds, amassing a couple of completely different choices to match. Having established the parameters we wished to check, we then carried out a aggressive evaluation between the assorted choices. In this weblog submit, we are going to give attention to the content material used, and the philosophy that went into curating a few of it.

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