I gave a hand to to explore the audio capabilities of the Chromecast audio.
Google confirmed what we found in measurements earlier: Chromecast audio resamples everything to 48 KHz 16-bit for both the optical and analog output.
– It is a poor default choice for audio since most material is sampled at 44.1 KHz.
– The resampler itself is not so great, introducing various distortion artifacts.
– The 16-bit output limitation is not welcome, including for 16-bit material since the volume control is software and digital.
– And it prevents playing 96 KHz 24-bit material without loss of quality.
Google say they are working on it, however they didn't adjust their marketing material announcing the support of 96 KHz 24-bit resolution which is rather unfortunate.
I have a lot more measurements and data than the graph republished, would you like to see them?
Test du Chromecast Audio, le parfait compagnon de vos oreilles – FrAndroid
Après avoir rendu intelligents les écrans les plus basiques avec son Chromecast, Google a souhaité aller plus loin cette année avec le Chromecast Audio, un