English articles are being translated. Browse the Chinese blog for DSD mastering guides and industry insights.
English articles are being translated and will be published here soon.
Stereo has only left/right (X axis) — where did front/back (Y axis) go? From the Kakeya conjecture to spatial impulse convolution, DpdoEngine's new DpdoDepth engine breaks the flat soundstage with multi-angle measurement interpolation.
Part 1 examined the technical limits of MASH-era DSD — low-order modulators, limited-tap FIRs, noise shaping that couldn't be pushed high, compensated by high rates. This part, based on the current DpdoEngine v6.60 toolchain (9th-order modulator, Kakeya polynomial compression, 65536-131072 tap FIRs, all-platform SIMD acceleration), re-examines DSD's real capability: DSD64 noise shaping now exceeds MASH-era DSD256 (in-band SNR ~125dB); high rates have gone from necessity to option; time-domain precision and distortion spectra are dramatically improved; many MASH-era criticisms no longer hold. 10 Q&As cover noise shaping, time domain, distortion, rate strategy, file size, noise floor, editing limits, enabling technology, system thresholds and market positioning. Core argument: DSD's "innate flaws" are actually "implementation flaws" — the current toolchain is the first to come close to realizing DSD's theoretical potential on consumer hardware.
A 50,000-word systematic teardown of the 130 most common DSD misconceptions — technical nature, listening, formats, marketing, history, systems and special phenomena — with verifiable facts for each, based on DpdoEngine's measured data.
DpdoEngine's built-in DSEE (Digital Sound Enhancement Engine) reconstructs harmonics above 16kHz from the source signal itself using Hilbert SSB frequency shifting. This article breaks down the technical principles, the design thinking behind the 14kHz pre-LPF, and why this is signal-processing trade-off, not magic.
Does DSD64 really correspond to 44.1kHz? Does DSD→PCM playback introduce noise? Why do different DACs sound different with PCM but converge with DSD? This article breaks down the most common DSD misconceptions from fundamental signal-processing principles.
SonicBro (dpdo.cn) presents the independently developed DpdoEngine for high-precision DSD mastering. Full 64-bit double-precision computation, 9th-order Σ-Δ modulation with MASH noise shaping, DSD64 to DSD4096 plus custom DSDN/48 standards, paired with DpdoPackSACD for one-stop SACD ISO authoring, with FFT spectrum and DR quality reports.
An in-depth look at DpdoEngine — SonicBro's in-house PCM→DSD conversion engine. From FIR filter design and psychoacoustic noise shaping to the mastering toolchain, a full comparison against HQPlayer Pro, Weiss Saracon, Sonoris and others reveals the technical details behind commercial-grade DSD mastering.
From noise shaping to vendor SDM implementations, to DAC chips — a 10,000-word deep dive into DSD's true value.
Core ΔΣ modulation (SDM) is neither mysticism nor a scam.
DSD and PCM take completely different technical approaches. This article compares quantization noise, filter design and dynamic range to help you decide when to use which format.
From lossless mix to a complete SACD ISO image — what happens at every step? This guide walks you through the full professional DSD mastering workflow.
In an era dominated by lossy streaming compression, DSD mastering is a powerful differentiator for independent musicians. This article explains why and how.
Welcome to SonicBro. We focus on DSD mastering and SACD ISO authoring, giving independent musicians and labels major-label quality.