Privia

Privia
Privia PX-310 Compact Digital Piano
Manufacturer	Casio
Dates	2003 – present
Price	US$ 699–1599 (depending on model)
Technical specifications
Polyphony	32   (ZPI models) 128-256 (AiF and AiR models)
Timbrality	Multitimbral
Synthesis type	Sampling ZPI synthesis (2003-2009) Linear Morphing AiF/AiR Sound Engine (2009-present)
Aftertouch expression	yes (PX-860 and PX-870)
Velocity expression	yes
Storage memory	SD card (2005–2009) USB flash drive (2009–present)
Input/output
Keyboard	88 keys with weighted hammer action and simulated key weight
External control	MIDI

The Privia is a line of budget digital pianos manufactured by Casio. They have 4-layer stereo piano samples which provides articulated dynamics using Casio's Linear Morphing sound technology and up to 256 notes of polyphony, depending on model. As with other digital pianos, all Privia models feature weighted keyboard action which simulates the action on an acoustic piano.

First introduced in 2003, the Privia was originally designed to be a new competitor to other brands like Yamaha, Roland, and Kawai in budget digital piano products.

The original Privia was introduced by Casio in 2003, as a new concept within budget digital pianos, and is widely known for offering more advanced features and high-quality sound at an affordable prices, being able to keep up with more expensive instruments. The first Privia was the PX-100. Like any other compact digital pianos, it was able to be played on a table or optional stand, and was equipped with a digital sound source created by independent sampling of various piano timbres.

The first generation Privia was produced from 2003 to 2006, and utilizes the Zygotech Polynomial Interpolation (ZPI) synthesis sound engine, as used in Casio's numerous former flagship keyboards. Second generation follows from 2006 to 2009, using similar sound engine

The third generation was introduced in 2009, featuring an all new Linear Morphing AiF (Acoustic and Intelligent Filtering) sound engine with 4-level dynamic stereo piano sampling and 128-note polyphony.

The fourth generation is the current version of the Privia, first introduced in 2012 . It uses the improved rendition of Linear Morphing AiF engine, called Multi-Dimensional Acoustic and Intelligent Resonator (AiR) sound engine, featuring a revamped 4-layer sampling and new features such as simulated sympathetic resonance, adjustable key sensor response (referred to as "Hammer Response"), half-damper effect, pedal noises and key-off simulation

Minor update of fourth generation is introduced in 2015, with some models included color touchscreen and improved built-in speaker system, as well as updated various features with few models has up to 256-note polyphony.

As with other digital pianos, the Privia features a fully weighted keyboard action to simulate the action on an acoustic piano.