FTB-C000347 / Formula component

Signal EMA Period

Signal EMA Period is the period or alpha used to smooth a MACD or PPO line into its signal line.

Also known asMACD signal span

Foundation 2 linked topicsPublished

Definitions

In plain terms

It begins operating only after the underlying oscillator has valid values.

Technical

The contract fixes alpha conversion, seed, valid-input counting, missing values, and first-ready output.

Scope

It does not need to lie between the fast and slow price-EMA periods.

Examples

  • A governed lesson calculates or identifies Signal EMA Period only after its parameters, state, timing, and edge cases are declared.

Common misconceptions

  • It does not need to lie between the fast and slow price-EMA periods.

Concept relationships

Prerequisites

Related

Required by

Where this concept is used

Tutorials planned

These catalogued topics use this concept, but their complete build has not shipped yet.

  • D07-F02-A01 Prerequisite
  • D07-F02-A02 Prerequisite

Evidence and governance

  1. TA-Lib MACD Implementation TA-Lib · first party technical publication

    Supports: preferred label, short definition, technical definition

    Limits: Provider-specific compatibility behavior and unstable periods must be reconciled before claiming parity.

Reviewed by
fintech-builder-batch-007
Last reviewed
2026-07-27
Next review
2027-07-27
Record status
published
Written by

Fintech engineer building market-data and financial systems, and the author of every article, glossary record, and reference implementation on The Fintech Builder.