OK, they would work, but the interpolation won't be perfect. 44.1 kHz -> 48 kHz or 192 kHz won't work. If UAPP offers the way arouind it, at least on certain devices, that woukld probably excite a lot of folks.īy the way great app, works on DP-X1, I am using it for everything including Tidal. Upsampling to a sampling rate which is a multiple of the signal's sampling rate would allow for a perfect reconstruction of the signal. There are a lot of complains about Android resampling and SQ. For example "Android: 44100 Hz, file: 44100 Hz.", Android: 96000 Hz, file: 96000 Hz."ĭoes it mean that when using UAPP on DP-X1, with variable sample rate, Android on DP-X1 will not resample? DP-X1 uses 5.1.1 version. for instance, if you resample from 44100 to 88200 and then assume it's 44100 (just by changing the sample rate metadata without changing the actual data), you've slowed it down x2. When I am playing the 44.1kHz, 48kHz, or 96kHz files, the UAP P shows the same sampling rate for Android and the file. if you need to preserve time, idk, but if not, it's the same as resampling to a different sample rate and then assuming another sample rate without resampling. I am using UAPP on Onkyo DP-X1, not USB Recorder, with the Android sampling rate set in UAPP to variable. For those devices, the variable rate setting is best. There are very very few Android devices that actually use a variable sample rate without a fixed sample rate. In particular, a set of sufficient conditions is that the rate of convergence of the estimator is known and that the limiting distribution is. The advantage of subsampling is that it is valid under much weaker conditions compared to the bootstrap. So what do we learn from this? Basically, it's best to use the fixed native rate since then UAPP's SRC is used and not Android's (or both). the resample size is smaller than the sample size and resampling is done without replacement. Note that Android's SRC usually causes a (sometimes dramatic) decrease in volume. So, when playing a 96000Hz file with variable rate setting, 96000Hz audio data is fed to Android and then sample rate converted to either 44100 or 48000Hz by Android. When using the variable rate setting, UAPP will feed the sample data as is up to the sample rate that the Android device supports internally (before SRC). If your Android device has a native sample rate of 44100Hz then you are lucky since if you playback 44100Hz material, the Android sample rate converter (SRC) doesn't need to do anything. Everything else is sample rate converted to this rate (by a worse sample rate converter than used by UAPP). downloads of freeware and open source software without ads. ![]() Android (usually) has a fixed native sample rate of either 44100 or 48000Hz. Long ago on the Head-fi USB Audio recorder thread someone asked Davy Wentzler a question about playback in USB Audio recorder and Android resampling:
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