Crate sim_lib_sound_core 

Core sound primitives for the SIM music constellation.

This crate defines the foundational acoustic types shared by the sound/synthesis layer: Frequency, Amplitude, and Phase quantities; the Partial, Envelope, and Tone models that build a spectral tone from sinusoidal components; and helpers for default envelopes and equal-temperament pitch-to-frequency conversion.

Structs

Amplitude

A non-negative linear amplitude.

Envelope

An attack/decay/sustain/release amplitude envelope.

Frequency

A positive frequency in hertz.

Partial

A single sinusoidal component of a tone.

Phase

A phase angle in radians.

Tone

A complete tone: a set of Partials shaped by an Envelope over a fixed duration.

Enums

EnvelopeShape

The interpolation curve applied across an Envelope.

SoundCoreError

Error raised when sound primitives are constructed with invalid values.

Functions

default_envelope

Returns a general-purpose default envelope (short attack and decay, high sustain, moderate release, linear shape).

equal_temperament_frequency

Returns the 12-tone equal-temperament frequency of pitch, with A4 (MIDI 69) anchored at 440 Hz.