A skeptical, evidence-driven tour of the audio codecs that actually matter: MP3, AAC, and Opus on the lossy side; FLAC and ALAC on the lossless side; the MQA fiasco; and the psychoacoustics that make any of it work. We take ABX blind testing seriously, name real transparency thresholds, and debunk the audiophile myths that fail under controlled listening — while being fair about where the differences are real.
Audio
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Audio Codecs Compared -
Bluetooth Audio Explained Wireless audio frustration is almost never about the "Bluetooth number" on the box. It is about A2DP codec negotiation, the SBC fallback and its bitpool ceiling, AAC's inconsistency across phones, the aptX and LDAC marketing math, the latency-versus-quality trade-off, and the slow split to LE Audio with LC3 and Auracast. This is the protocol-level honest version.
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DSP for Audio EQ and compression are the two processors that do more to a recorded signal than anything else, and the math underneath both is simpler than the plugin GUIs suggest. We walk biquad filters, the parametric EQ math, attack and release in a compressor, the look-ahead trick, why the same algorithm in a $50 plugin and a $5000 hardware unit can sound surprisingly different, and where the money actually goes.
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Headphone Amps and DACs Headphone amps and outboard DACs are the corner of audio where the gap between marketing and double-blind reality is widest. We walk what a DAC actually does, when an external one matters and when it doesn't, the impedance-and-sensitivity math that decides whether you need an amplifier at all, and a calibrated take on which audiophile claims survive measurement.
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Live Sound Engineering Live sound is a completely different engineering problem from studio mixing — the room talks back, the band hears its own monitors, and the margin between sounding great and feeding back is a few dB. We walk line arrays versus point-source, the gain-before-feedback budget, in- ear monitor design, and the honest gap between studio and FOH.
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Microphone Engineering Microphones look superficially similar and behave dramatically differently because the transducer mechanism each one uses has very different physics. We walk dynamic versus condenser versus ribbon microphones at the diaphragm level, the polar patterns that decide what each one hears, why a $100 dynamic still beats a $1000 condenser for some sources, and a practical framework for choosing the right mic for what you actually record.
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Room Acoustics for the Home Studio A bad room can make a great microphone sound mediocre, and the treatment that actually fixes it is unglamorous, larger than the internet implies, and almost never what foam-tile marketing sells. We walk what room modes do, why bass traps need to be physically enormous, the difference between absorption and diffusion, the honest gap between "soundproofed" and "treated for recording," and the practical first-room treatment plan that actually works.
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Vinyl Engineering Vinyl is the audio format that refuses to die, and the engineering reasons it sounds different are more interesting than the audiophile marketing implies. We walk the RIAA equalization curve and why every record needs it, the cartridge as a tiny electromagnetic generator, why mastering for vinyl is genuinely different from CD, and the honest case for the format and its limitations.
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How Noise-Cancelling Headphones Work Active noise cancellation is a real-time control loop fighting the wave equation. We walk through feedforward, feedback, and hybrid architectures, why ANC crushes low rumble but gives up on hiss, the latency budget that governs the whole design, and what transparency mode and adaptive ANC actually do to the signal.
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Audio and Video Setup for Remote Work and Content Creation Dynamic vs condenser microphones, USB vs XLR signal chains, acoustic treatment without destroying your room, webcam vs mirrorless camera setups, and background options — a practical guide to sounding and looking professional on video calls and recordings.
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Audio for Live Broadcast How to get clean, professional audio into a live stream — taking a dedicated broadcast send off the sound board, the broadcast mix versus the house mix, embedding audio into SDI, audio-to-video sync, loudness targets for streaming, and a concrete end-to-end broadcast audio chain.