If your going to upsample as well doing it in larger word length is more accurate (some would say a better guessitmate). Upsampling doesn't make a lot of sense with Slimdevices because SB3 only does 48khz and Transporter doesn't do 88.2Khz. BUt my library is for other devices beside the Slimdevices.
I don't know why but in this stereophile review of the transporter 16 vs 24 changed the jitter measurement. http://www.stereophile.com/mediaservers/207slim/index4.html Snippet: I tested the Transporter's rejection of word-clock jitter using the Miller Jitter Analyzer, which examines a narrowband, FFT-derived spectrum of the analog output of the device under test (DUT) for pairs of sidebands around a high-level tone at one quarter the sample rate, while the LSB is toggled on and off at 1/128 the sample rate. (Both signals are exact integer fractions of the sample rate, meaning that any spuriae that appear in the spectrum are due to the behavior of the DUT, not to quantizing distortion.) Fed 24-bit data via the WiFi network, the Transporter developed just 235 picoseconds peakpeak of jitter with no data-related components (not shown). Decreasing the word length to 16 bits gave the spectrum shown in fig.10. Here the jitter level has increased slightly, to 268ps pp; though there are data-related sidebands (red numeric markers) at the test signal's residual level. The primary jitter components lie at ±15.6Hz (purple "1") and ±1435Hz (purple "10"), but this is still excellent performance. -- mswlogo ------------------------------------------------------------------------ mswlogo's Profile: http://forums.slimdevices.com/member.php?userid=9090 View this thread: http://forums.slimdevices.com/showthread.php?t=34892
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