Sampling frequency question - Printable Version +- eXtream Software Development Forum (https://www.extreamsd.com/forum) +-- Forum: Apps (https://www.extreamsd.com/forum/forum-4.html) +--- Forum: USB Audio Player PRO (https://www.extreamsd.com/forum/forum-22.html) +---- Forum: Help (https://www.extreamsd.com/forum/forum-11.html) +---- Thread: Sampling frequency question (/thread-1044.html) |
Sampling frequency question - michalrzepecki - 05-14-2020 Hello. I just bought UAPP to play music from Tidal. I'm running it on Google Pixel 3 connected to Cambridge Audio Dacmagic 100. I'm not good at sampling frequecy and all theory... Can somebody tell me if what I see in UAPP (about frequeny) is correct behaviour or something is wrong? For different types of songs I can see: USB DAC: 88.2kHz MQA FLAC:44.1kHz USB DAC: 96kHz MQA FLAC:48kHz USB DAC: 96kHz MQA FLAC:96kHz USB DAC: 96kHz MQA FLAC:192kHz Why USB is twice FLAC frequency in first two cases? Why USB frequency is not 192kHz in last case? RE: Sampling frequency question - dwrae - 05-15-2020 The MQA decoder always outputs 88.2 or 96kHz, regardless whether the track has an unfoldable sample rate. A MQA decoder never outputs higher than 96kHz because that's the job of a MQA renderer. A MQA renderer inside a USB DAC could further unfold it to higher frequencies. |