Audio
銆帮笍 Sound Theory
A guided path through the SoundStudio audio theory tutorial, with the pieces it skips: how ears judge loudness, why 48 kHz, what LUFS targets mean, which frequencies do what, and how rooms and microphones get in the way. Every lesson ends with something to measure in SoundStudio.
- 1What Sound Is and How You Hear ItSound is moving air pressure, and your ears judge it unevenly: they hear 20 Hz to 20 kHz at best, favor the 2 to 5 kHz region, and make bass seem quieter than it measures.14 min
- 2Digital Audio: Samples, Bits and NyquistA digital file is a list of measurements: the sample rate sets the highest frequency it can hold, the bit depth sets how quiet the noise floor is, and the job decides 48 kHz or 44.1 kHz.13 min
- 3Decibels, Loudness and Delivery TargetsTell dBFS from dB SPL, read LUFS and true peak the way ITU-R BS.1770 and EBU R128 define them, and know the loudness targets for streaming, podcasts and broadcast as of October 2026.16 min
- 4Frequency and Tone: Naming the BandsLearn the plain names engineers use for each frequency band (rumble, boom, mud, boxiness, presence, sibilance, air), how harmonics stack up, and why a voice and an acoustic guitar fight for the same space.15 min
- 5Rooms, Reflections, Phase and StereoRooms add reverb and comb filtering you cannot fully remove later, two microphones can cancel each other, and a stereo mix has to survive being folded to mono. Fix it at the microphone with distance, soft surfaces and the 3:1 rule.16 min