From 37656a98f760f0883ca649eb1bc2d92af052270e Mon Sep 17 00:00:00 2001 From: Electric Keet Date: Wed, 6 Sep 2023 19:31:37 -0700 Subject: [PATCH] Yet more glossary tweaks. --- doc/1-intro/glossary.md | 12 +++--------- 1 file changed, 3 insertions(+), 9 deletions(-) diff --git a/doc/1-intro/glossary.md b/doc/1-intro/glossary.md index ab6182b9a..fe8eacf8d 100644 --- a/doc/1-intro/glossary.md +++ b/doc/1-intro/glossary.md @@ -57,15 +57,12 @@ **Hz**: hertz. a unit representing divisions of one second. 1 Hz means once per second; 100 Hz means one hundred times per second. also, _kHz_ (kilohertz, one thousand per second) and _MHz_ (megahertz, one million per second). -**interpolate** (pattern): to fill in the area between two values with a smooth ramp of values in between. - -**interpolation** (sample): filtering of sample output to remove unintended harmonics and achieve a smoother sound. -- analogous to image antialiasing. -- some sample-based chips can perform interpolation, but most cannot. +**interpolate**: to fill in the area between two values with a smooth ramp of values in between. +- some sample-based chips can interpolate, filtering out unwanted harmonics. **ladder effect**: an inaccurate yet common term for the DAC distortion that affects some Yamaha FM chips. -**LFO**: low frequency oscillator. this is a slow, often subsonic oscillator used to alter other sounds. +**LFO**: low frequency oscillator. a wave with a slow period (often below hearing range) used to alter other sounds. **macro**: a sequence of values automatically applied while a note plays. @@ -78,9 +75,6 @@ **oscillator**: a sine wave or other basic waveform used as sound or to alter sound. **PCM**: pulse code modulation. a stream of data that represents sound as a rapid sequence of amplitudes. -- CD tracks and .wav files are PCM. -- .flac files are compressed PCM that must be converted to .wav outside Furnace before use. -- .ogg and .mp3 are compressed differently from PCM. they must also be converted to .wav before use. **period**: the length of a repeating waveform. as frequency rises, the period shortens.