PPQ

PPQ is an acronym used in multiple fields, and its meaning varies by context. There is no single universal definition for the term.

In music technology and digital audio workflows, PPQ stands for Pulses Per Quarter note. It is a timing resolution used by MIDI and sequencing systems to determine how precisely tempo and timing information are synchronized. A higher PPQ value results in finer temporal resolution, which can improve timing accuracy for complex arrangements, but also increases data and processing requirements. Common PPQ values include 96, 192, 480, and 960.

In manufacturing and quality assurance, PPQ commonly stands for Production Process Qualification or Process Qualification. It refers to the documented evidence that a production process can consistently operate within specified limits and produce outputs that meet predefined quality requirements. PPQ is typically part of a broader validation and qualification lifecycle, which may include related stages such as installation qualification and operational qualification in regulated environments.

Other uses of the acronym PPQ exist in different industries and organizations, where it may stand for field-specific programs, projects, or entity names. Because the meaning depends heavily on context, consulting relevant documentation or glossary within a given domain is recommended to determine the intended interpretation.