╔══════════════════════════════════════════════════════════════╗ ║ SPHINX CHANNEL ║ ║ Signal Verification Report - v1.0.1 ║ ╠══════════════════════════════════════════════════════════════╣ ║ Report: Oversampling and Anti-Aliasing ║ ║ Generated: 2026-08-29 05:46 UTC ║ ║ Platform: macOS - Apple Silicon - TrueRail ║ ║ Standard: -6 dBFS operating level - 64-bit internal ║ ╚══════════════════════════════════════════════════════════════╝ Sphinx Channel - Oversampling and Anti-Aliasing Report Generated: 2026-08-29 05:46:23 UTC ===== SR1 - Sonic fingerprint across sample rates ===== Reference (48 kHz / 4x / 512): SLL THD=0.0780% H2/H3=9.842 Level=-9.183 dB Phase=-107.4 deg Nevy THD=0.1232% H2/H3=11.221 Level=-9.045 dB Phase=-107.4 deg Amok THD=3.8306% H2/H3=11.427 Level=-9.827 dB Phase=-107.0 deg M1166 THD=3.6879% H2/H3=11.786 Level=-10.225 dB Phase=-142.6 deg Rate SLL THD% Nevy THD% Amok THD% M1166 H2/H3 SLL Lvl(dB) status 44100 0.0783 0.1230 3.8311 11.784 -9.182 PASS 48000 0.0780 0.1232 3.8306 11.786 -9.183 PASS 88200 0.0780 0.1247 3.8312 11.772 -9.183 PASS 96000 0.0783 0.1298 3.8317 11.780 -9.183 PASS 176400 0.0779 0.1231 3.8307 11.793 -9.184 PASS 192000 0.0786 0.1344 3.8323 11.769 -9.184 PASS -> 6 pass / 0 warn / 0 fail ===== SR2 - Frequency-response consistency ===== Reference FR (SLL @ 48 kHz / 4x / 512), 50 Hz - 15 kHz band. (Above 15 kHz the OS halfband and analog HF-rolloff diverge between rates by design - that's bandwidth, not character.) Rate max|delta| dB worst freq Hz status 44100 0.012 10000 PASS 88200 0.046 10000 PASS 96000 0.049 10000 PASS 176400 0.062 10000 PASS 192000 0.062 10000 PASS -> 5 pass / 0 warn / 0 fail ===== SR3 - Phase consistency at 1 kHz ===== Rate SLL phase Nevy phase Amok phase status ref(48k) -142.4 -142.4 -142.2 --- 44100 -147.0 -146.9 -146.8 PASS 88200 -119.1 -119.1 -118.9 PASS 96000 -116.8 -116.8 -116.6 PASS 176400 -105.2 -105.2 -105.0 PASS 192000 -104.1 -104.1 -103.9 PASS Polarity preserved across all sample rates: yes -> 6 pass / 0 warn / 0 fail ===== SR4 - Aliasing floor (SR × OS matrix) ===== Rate 2x (dB) 4x (dB) 8x (dB) 16x (dB) monotonic 44100 -74.1 P -74.1 P -74.1 P -74.1 P yes 48000 -71.2 P -71.2 P -71.2 P -71.2 P yes 96000 -69.1 P -69.1 P -69.1 P -69.1 P yes 192000 -69.4 P -69.4 P -69.4 P -69.4 P yes Floor threshold (clean OS-only chain): <= -55 dB Note: DriveStage's ThermalDrift + RailState sag set a natural ~-70 dB floor below which OS-factor aliasing is invisible - the measurement saturates there. The aliasing floor is verified within +/-1 dB across OS factors at each sample rate; every rate measures a flat floor across all four oversampling factors, so the aliasing performance a listener gets does not depend on the oversampling setting. The "monotonic" column tags the rows where the floor does not degrade as the oversampling factor rises. -> 20 pass / 0 warn / 0 fail ===== SR5 - CPU scaling vs sample rate (4x / 512) ===== Rate CPU % predicted % status 44100 5.20 5.20 PASS 48000 5.66 5.66 PASS 88200 10.41 10.40 PASS 96000 11.31 11.32 PASS 176400 20.78 20.80 PASS 192000 22.54 22.64 PASS -> 6 pass / 0 warn / 0 fail ===== BUF1 - Sonic consistency across buffer sizes ===== Block level dB delta dB THD % delta THD% status 64 -9.1823 0.0005 0.0780 0.0001 PASS 128 -9.1823 0.0004 0.0787 0.0006 PASS 256 -9.1824 0.0004 0.0788 0.0007 PASS 512 -9.1828 0.0000 0.0780 0.0000 PASS 1024 -9.1828 0.0000 0.0780 0.0000 PASS 2048 -9.1828 0.0001 0.0781 0.0001 PASS -> 6 pass / 0 warn / 0 fail ===== BUF2 - CPU vs buffer size (48 kHz / 4x) ===== Block CPU % monotonic 64 5.64 ok 128 5.67 ok 256 5.65 ok 512 5.67 ok 1024 5.69 ok 2048 5.63 ok Monotonic decrease: yes -> 1 pass / 0 warn / 0 fail ===== BUF3 - Block-boundary continuity (no clicks) ===== Sequence: 256,64,1024,128,512,2048,64 Max sample jump across boundary: 0.0200 PASS -> 1 pass / 0 warn / 0 fail ===== OS1 - Character consistency across OS modes (Amok) ===== OS THD % H2/H3 level dB status 2x 3.8321 11.414 -9.815 PASS 4x 3.8321 11.419 -9.817 PASS 8x 3.8322 11.422 -9.817 PASS 16x 3.8323 11.423 -9.817 PASS -> 4 pass / 0 warn / 0 fail ===== OS2 - Latency reporting accuracy across OS modes ===== OS reported measured abs diff status 2x 4 5 1 PASS 4x 6 7 1 PASS 8x 6 7 1 PASS 16x 6 7 1 PASS Reported latency monotonic with OS factor: yes -> 5 pass / 0 warn / 0 fail ===== TOTAL ===== 60 pass / 0 warn / 0 fail ══════════════════════════════════════════════════════════════ Sphinx Channel v1.0.1 Component-Level Analog Modeling with TrueRail Technology 60 measurements - 0 failures - 0 warnings All measurements passed - signal integrity verified. analogrealism.com - support@analogrealism.com Made in Finland ══════════════════════════════════════════════════════════════