Acoustic Engineering & DSP Knowledge Base
Rigorous engineering papers and practical studio guides spanning digital signal processing, architectural room modes, and music production workflows.
Digital Audio & DSP Silo (10 Articles)
Understanding Audio Sample Rates: 44.1kHz vs 48kHz vs 96kHz Explained
The complete engineering breakdown of digital audio sample rates: 44.1kHz, 48kHz, 96kHz, and 192kHz. Nyquist limits, video tape origins, and DSP oversampling.
Read Guide →16-Bit vs 24-Bit vs 32-Bit Float: Dynamic Range & Quantization Distortion
The complete engineering guide to audio bit depth. Derive the 6.02 dB per bit rule, understand quantization distortion, and learn why 32-bit floating point prevents digital clipping.
Read Guide →Mid/Side Processing: The Sound Engineer's Guide to Stereo Imaging
Master Mid-Side matrix decomposition in audio mixing and mastering. Phase cancellation algorithms, stereo width enhancement, and center isolation.
Read Guide →Nyquist-Shannon Sampling Theorem & Anti-Aliasing Filters in DSP
Master the mathematical physics of the Nyquist-Shannon sampling theorem, frequency foldover, aliasing distortion, and oversampling anti-aliasing filters in DSP.
Read Guide →Audio Dithering & Noise Shaping: Why, When, and How to Dither in DAWs
The complete guide to digital audio dithering and noise shaping. Learn why adding microscopic noise eliminates truncation distortion when reducing 24-bit to 16-bit.
Read Guide →True Peak Metering & Intersample Peaks: Preventing Streaming Distortion
Why sample peak meters miss distortion. How intersample peaks (ISPs) occur during digital-to-analog reconstruction and lossy MP3/AAC encoding.
Read Guide →Uncompressed PCM vs Lossless FLAC vs Psychoacoustic MP3/AAC
A technical comparison of uncompressed WAV containers, FLAC entropy encoding, and lossy MDCT perceptual audio codecs.
Read Guide →Phase Cancellation & Comb Filtering: The Physics of Acoustic Interference in Mixing
Master the wave physics of phase cancellation and comb filtering in stereo mixing. Calculate notch null frequencies, the 3:1 microphone rule, drum phase alignment, and mono compatibility.
Read Guide →Fast Fourier Transform (FFT) in Audio: How Spectral Visualizers Work
How the Discrete and Fast Fourier Transform algorithms decompose time-domain audio waveforms into frequency spectra for real-time visualizers.
Read Guide →Convolution Reverb & Impulse Responses: The Mathematical Physics of Acoustic Spaces
How convolution reverb uses finite impulse responses (FIR), the discrete convolution integral, and partitioned FFT algorithms to mathematically clone physical spaces.
Read Guide →Studio Acoustics Silo (10 Articles)
The Inverse Square Law in Sound: Calculating Acoustic Distance Decay
Master the Inverse Square Law in architectural acoustics. Calculate sound pressure level drop over distance, spherical dispersion, and boundary effects.
Read Guide →Room Modes & Standing Waves: How to Calculate Axial, Tangential & Oblique Resonances
Master the physics of room modes and standing waves. Calculate axial, tangential, and oblique resonant modes with the Rayleigh equation, Schroeder frequency, and bass trapping.
Read Guide →Reverb Decay Time (RT60): Sabine Equation Calculator & Optimal Studio Absorption
Learn how to calculate RT60 reverberation decay times using Wallace Clement Sabine's equation and the Eyring correction. Target decay times for control rooms vs live rooms.
Read Guide →Bass Trapping Physics: Velocity Absorbers vs Pressure Membrane Resonators
Complete acoustic engineering guide to bass traps: particle velocity vs acoustic pressure, quarter-wavelength physics, porous fiberglass vs tuned limp-mass membranes.
Read Guide →Flutter Echo, Specular Reflections & Control Room RFZ (Reflection-Free Zone)
Eliminate flutter echo and early specular reflections using the Reflection-Free Zone (RFZ) acoustic control room design philosophy.
Read Guide →Acoustic Diffusers: Schroeder, Quadratic Residue (QRD) & 2D Skyline Diffusers
Complete engineering guide to acoustic diffusers: Schroeder 1D QRD well depth formulas, 2D Skyline physics, the 3-lambda seating distance rule, and studio placement.
Read Guide →Studio Soundproofing: Mass-Air-Mass Resonance, Decoupling & STC Ratings
Complete studio soundproofing guide: the physics of mass-air-mass resonance, mechanical decoupling, Green Glue damping, and achieving STC 60+ isolation.
Read Guide →Studio Monitor Placement & Speaker-Boundary Interference Response (SBIR)
How speaker-boundary interference response (SBIR) creates severe low-frequency bass notches. Optimal monitor positioning from front and side walls.
Read Guide →Studio Noise Criteria (NC & NR Curves): HVAC Silencing & Ambient Noise Floors
Understanding Noise Criteria (NC) and Noise Rating (NR) curves for professional recording studios. HVAC airflow silencing and noise isolation.
Read Guide →The Critical Distance (Dc) in Enclosed Rooms: Direct vs Reverberant Sound Field
Calculate the Critical Distance (Dc) where direct sound equals reverberant room reflections. Microphone placement and mixing sweet spot optimization.
Read Guide →Music Production Silo (10 Articles)
BPM to Milliseconds: The Ultimate Reverb & Delay Time Synchronization Table
Complete musical delay chart synchronizing delay times, pre-delays, and LFO speeds from 60 to 180 BPM in standard, dotted, and triplet divisions.
Read Guide →Concert Pitch: The History and Acoustics of 440 Hz vs 432 Hz Tuning
Scientific and acoustic analysis of standard concert pitch A440 vs 432Hz Verdi tuning, Baroque 415Hz, and European orchestral standards.
Read Guide →Microphone Polar Patterns: Cardioid, Figure-8 & Omni Acoustic Rejection
Complete acoustic guide to microphone polar patterns: pressure vs pressure-gradient transducers, off-axis rejection null angles, and the proximity effect.
Read Guide →Gain Staging in Digital DAWs: The -18 dBFS Sweet Spot Demystified
Why analog-modeled plugins need -18 dBFS gain staging. Maintain headroom, prevent intersample clipping, and optimize mix bus dynamics.
Read Guide →Audio Compressor Topologies: VCA, Optical, FET & Vari-Mu Characteristics
Complete engineering guide to the four classic compressor circuit topologies: VCA precision, Optical smoothness, FET lightning attack, and Vari-Mu tube glue.
Read Guide →Headroom, Crest Factor & True Dynamic Range: Defeating the Loudness War
What is crest factor in mastering? Balance RMS and True Peak levels to maintain punch, punchy transients, and comply with LUFS streaming standards.
Read Guide →The Fletcher-Munson Curves: Equal-Loudness Contours & Monitoring Levels
Master the Fletcher-Munson equal-loudness contours (ISO 226) and Bob Katz's K-System. Calibrate studio monitors to the 83 dB SPL sweet spot for balanced mixes.
Read Guide →Stereo Panning Laws: -3dB, -4.5dB & -6dB Pan Depth Compensation
Why panning a mono track to the center makes it sound louder. How pan laws (-3dB, -4.5dB, -6dB) maintain consistent acoustic loudness across the stereo field.
Read Guide →Balanced XLR vs Unbalanced TS/RCA: The Physics of Common-Mode Rejection Ratio (CMRR)
The complete engineering guide to balanced vs unbalanced audio cables. Common-Mode Rejection Ratio (CMRR), differential amplifiers, ground loops, and star-quad geometry.
Read Guide →Subwoofer Integration: 80 Hz Crossover Physics & Acoustic Phase Alignment
Master studio subwoofer integration. Calculate 80 Hz Linkwitz-Riley 24 dB/oct crossover slopes, acoustic delay alignment, boundary bass loading, and room mode calibration.
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