Changelog

All notable changes to this project will be documented in this file.

The format is based on Keep a Changelog, and this project adheres to Semantic Versioning.

0.17.0 - 2025-01-20

Changed

sweptsine: support any number of harmonics

0.16.0 - 2025-01-09

Added

cic, configurable CIC interpolator/decimators
sweptsine, exponential synchronize swep sine tooling for linear and non-linear transfer function/response measurements

0.15.0 - 2024-02-09

Added

Dsm: Delta sigma modulator/noise shaper in MASH-(1)^K architecture.

Changed

Pid: Fixed period/rate mixup.

0.14.1 - 2024-01-15

Fixed changelog

0.14.0 - 2024-01-15

Added

iir::Pid, iir:Filter a builder for PID coefficients and the collection of standard Biquad filters
iir::Biquad::{HOLD, IDENTITY, proportional}
iir::Biquad getter/setter
iir: support for other integers (i8, i16, i128)
iir::Biquad: support for reduced DF1 state and DF2T state
svf: state variable filter

Removed

iir::Vec5 type alias has been removed.
iir_int: integrated into iir.

Changed

iir: The biquad IIR filter API has been reworked. IIR -> Biquad renamed.

0.13.0 - 2024-11-01

Changed

hbf: more taps, API rework, f32/f64 type genericism
PLL: redesign, add noise shaping
Unwrapper: simplify, redesign

0.12.1 - 2024-10-12

Changed

hbf taps tweaks, performance tests

0.12.0 - 2024-10-12

Added

hbf taps

0.11.0 - 2024-09-16

Added

hbf FIRs, symmetric FIRs, half band filters, HBF decimators and interpolators

0.10.0 - 2023-07-20

Changed

filter mod added to allow being generic about the Filter trait. This is currently i32 -> i32 filtering (SISO, no batches) only and pretty simple but it allows filter composition, chaining, repetition, and handles parameters/configuration.
pll reworked to use FMA instead of shifts. These are faster on the target architecture and crucially important to increase dynamic range and bias. PLL now works fine even for very small feedback gains and maintains accuracy.
lowpass reworked to use the new Filter trait. Also reworked to use FMA instead of shifts for greatly improved performance at low corner frequencies. Second order lowpass added.

0.9.2 - 2022-11-27

Changed

atan2 code refactored slightly for speed

0.9.1 2022-11-05

Changed

cossin code reworked for accuracy and speed

0.9.0 2022-11-03

Changed

Removed miniconf dependency as with miniconf >= 0.6 MiniconfAtomic is implicit.

0.8.6 - 2022-08-16

Changed

atan2 code refactored slightly for speed

0.8.5 - 2022-08-13

Changed

atan2 algorithm changed, accuracy improved from 4e-3 to 1e-5 rad max error

0.8.0 - 2022-06-07

Changed

Miniconf dependency bumped to 0.5

0.7.1 - 2022-01-24

Changed

Changed back to release 2018

0.7.0 - 2022-01-24

Added

Getter methods for PLL, RPLL, Lowpass, Unwrapper

Changed

Accu, Unwrapper, overflowing_sub are now generic.
Revert to PLL::update() returning the phase increment as that has less bias (while it does have more noise).

0.6.0 - 2022-01-19

Changed

Let the wrap return value of overlowing_sub() be a i32 in analogy to the remaining API functions for i32 and the changes in idsp v0.5.0.

0.5.0 - 2022-01-19

Changed

The shift parameters (log2 gains, log2 time constants) have all been migrated from u8 to u32 to be consistent with core. This is also in preparation for unchecked_shr() and unchecked_shl().
PLL::update() does not return the phase increment but instead the actual frequency estimate.
Additional zeros in the PLL transfer functions have been placed at Nyquist.

0.4.0 - 2021-12-13

Added

Deriving Serialize for IIR and IIR (int) to support miniconf updates.

0.3.0 - 2021-11-02

Removed

Removed nightly feature as it was broken in 0.2.0 and hard to fix with generics. Instead use num_cast::clamp.

0.2.0 - 2021-11-01

Changed

IIR is now generic over the float type (f32 and f64)

0.1.0 - 2021-09-15

Library initially released on crates.io