Module output 

Structs

PwmMapper

Full output path: optional ΣΔ then duty.

SigmaDelta

First-order sigma-delta modulator (PCM → single-bit decision → duty).

SigmaDelta2ndOrder

Second-order sigma-delta modulator (MASH 1-1 / dual error integrator).

Enums

DutyMode

How PCM is converted to a PWM compare value.

Functions

limit_bus

Soft limiter before mix bus.

pcm_to_dac_u8

Convert signed 8-bit PCM (-128..=127) to unsigned 8-bit DAC sample (0..=255).

pcm_to_dac_u12

Convert signed 8-bit PCM (-128..=127) to unsigned 12-bit DAC sample (0..=4095, e.g. STM32 DAC1).

pcm_to_dac_u16

Convert signed 8-bit PCM (-128..=127) to unsigned 16-bit DAC sample (0..=65535).

pcm_to_duty

Map shaped PCM to PWM duty in 1..period-1.

pcm_to_i16

Convert signed 8-bit PCM (-128..=127) to signed 16-bit PCM (-32768..=32767).

pcm_to_i32

Convert signed 8-bit PCM (-128..=127) to signed 32-bit PCM (24-bit aligned).