Confirmed: Chromecast audio analog output is 48kHz 16-bit today

I gave a hand to +FrAndroid​​​​​ +Manuel C.​​​​​ 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 +FrAndroid​​​​​ republished, would you like to see them?


#supercurioBlog #audio #measurements #chromecast
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