J
Julia
@foxgrrl.bsky.social
she/her | Gay Area, CA
∇⋅𝐄=ρ/ε₀
∇⋅𝐁=0
∇⨯𝐄=-∂𝐁/∂t
∇⨯𝐁=μ₀(𝐉 + ε₀(∂𝐄/∂t))
𝐅=q(𝐄 + 𝐯⨯𝐁)
故有之以為利，無之以為用。
1.2k followers988 following2.8k posts
LaserDiscs are just a raw analog 10MHz NTSC/PAL FM signal etched into the polycarbonate (It's pulse-width modulated if I remember correctly.) For Audio Compact Discs (Compact relative to LaserDisc) 10MHz is overkill for human hearing, so they PCM encoded the audio to get a ridiculous 110db S:N ratio
That's really interesting. I assumed they were all digitally encoded
J
Julia
@foxgrrl.bsky.social
she/her | Gay Area, CA
∇⋅𝐄=ρ/ε₀
∇⋅𝐁=0
∇⨯𝐄=-∂𝐁/∂t
∇⨯𝐁=μ₀(𝐉 + ε₀(∂𝐄/∂t))
𝐅=q(𝐄 + 𝐯⨯𝐁)
故有之以為利，無之以為用。
1.2k followers988 following2.8k posts