[breeze.signal] IIR filter, Biquad filter

Description

This issue does not include a description.

Contributor guide

Tech stack

scala

Domain

data

Issue type

feature

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

4

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

1-2 days

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

stale

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

needs investigation

Prerequisites

ScalaDSP basicsBreeze internals

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

30

Research direction

The issue requests implementation of IIR filter and Biquad filter in the breeze.signal package. The repository is written in Scala and likely has existing signal processing code. Newcomers should review the existing signal module and any linked resources in the comments. The maintainers have discussed specifics in the comments, so reading those is essential to understand the expected API and algorithm choices.