LPC

LPC is an acronym that can refer to several terms across different fields. Common usages include Linear Predictive Coding in speech processing, the Licensed Professional Counselor credential in the United States, and the Legal Practice Course in the United Kingdom. Other specialized meanings exist in computing and other professions.

Linear Predictive Coding is a method for representing natural speech signals by modeling each sample as a linear combination of past samples plus an excitation term. It yields LPC coefficients that capture the spectral envelope, which are used in speech codecs and vocoders to compress and synthesize speech. Coefficients are estimated from short frames and updated regularly, enabling efficient encoding and high-quality synthesis in many telecommunication and audio applications.

Licensed Professional Counselor is a state-level credential for mental health practitioners in the United States. Requirements typically include a master's or doctoral degree in counseling, supervised clinical experience, and passing a licensing examination. LPCs provide counseling services in schools, clinics, private practice, and community agencies, operating under state ethics codes and scope-of-practice regulations.

In the United Kingdom, the Legal Practice Course is a vocational qualification for aspiring solicitors, taken after a qualifying law degree or conversion course. It covers professional skills, ethics, and client-centered practice. Completion used to be followed by a training contract, but routes to practice have evolved with reforms to the solicitor qualification process.

In computing, Local Procedure Call refers to a historical inter-process communication mechanism used by Windows to allow functions to be invoked within a local or nearby process with relatively low overhead compared to full remote procedure calls. It is part of the evolution of Windows IPC technologies.

Because LPC has multiple meanings, its interpretation depends on the context and domain.