![]() ![]() There does seem to be a change in the perceived detail of the sound subjectively through the gear I listed. This alone means that it's real compared to the identical measurements found with different bitperfect software and digital cables previously reported. The DSD conversion process through this TEAC DAC does change the electrical output as seen by the objective measurements above. This also means no evidence of worsened jitter with all that extra processing converting PCM to DSD in the computer at least based on the spectral output of this test (typically, this computer's AMD CPU utilization went from Simaudio Moon i3.3 -> Paradigm Signature S8 v3 (standard OFC cables) No meaningful differences between PCM and the DSD realtime conversion. Evidently JRiver uses a typical linear phase reconstruction filter hence the symmetrical pre- and post-ringing. Although impulse response graphs can be excellent with MHz sampling rate (this is often a "talking point" in the DSD/Sony ad literature over the years), when resampling PCM to DSD, we're still hampered by the PCM signal's original sampling rate (eg. Noise is again very evident in this "zoomed in" impulse response measured at 24/192 especially from the DSD64 process. ASIO buffer set to "minimum hardware size" since someone suggested it sounded better :-) - no stuttering encountered playing music.įirst, let's have a look at the 1kHz SQUARE WAVE off the digital oscilloscope (24/44 source): DSD: FIR3 analogue filter (closest volume match to PCM output) PCM: "SHARP" BB PCM1795 filter, no upsampling (default) This will allow an easy way for everyone to listen for themselves what happens to the sound either as the original PCM or transcoded to DSD with the assurance that we're comparing "apples-to-apples" with the same mastering.įirst, as has been my custom, let's start with some objective measurements to see what the DSD encoding does to test signals.ĪMD A10-5800K HTPC Win8 圆4 running JRiver 19.0.37 ( ASIOProxy workaround for DSD128) -> shielded USB -> TEAC UD-501 -> shielded 6' RCA -> E-MU 0404USB -> shielded USB -> Win8 laptop Enter JRiver Media Center 19 and it's ability to stream PCM -> DSD64/128 in realtime to a compatible DAC. Well, thanks to ongoing advancement in the computer audio world, we can now easily have a way to listen to our PCM music as a converted DSD stream. ![]() ![]() Some writers have voiced that even the process of upsampling PCM to DSD will imbue the music with some of DSD's beneficial properties, is this true? If so, what happens? Furthermore, I have shown that there already exists many SACD's appearing essentially to be upsampled PCM from standard sampling rates of 44/48 kHz (remember, it's almost a given that any music we listen to created in the last 20 years has at some point been through a PCM stage except specified pure analogue recordings or those specifically recorded in DSD with minimal processing). I demonstrated the noise characteristics for both DSD64 and DSD128 in my TEAC measurements. For now, I have already voiced some concerns about DSD including practical issues like the gross limitations of the file format itself. We're continuing to see a push into the DSD domain with renewed talk of music release as digital downloads requiring the purchase of a DSD DAC to natively play (eg.
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