This report did not examine the incidence of poor audio quality with voice calls.

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"What our unique proprietary technology is able to do is take the poor quality on-camera audio from fan videos, and we analyse that and can see the patterns, even though it's very weak and distorted, " explains Cathal Furey, co-founder of the firm, 45sound.

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The popularity of online applications is pushing existing network solutions to the limit, which results in freezing, stuttering, lower-quality audio and video and a generally poor user experience.

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Standard practice is for airlines to rent you a set of headphones to let you hear the audio, but usually they're of such poor quality that "hearing" is a word we use loosely here.

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