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  • 2015

    Digital PianosDigital Keyboards

    Musical instruMents

  • 2 3

    ACOUSTIC INTELLIGENT RESONATOR

    Even temporal tonal changes are reproduced naturally

    *AiR = Acoustic and Intelligent Resonator

    One of the chief attractions of the acoustic piano is its ability to produce countless subtle changes in tonal reverberation in response to delicate adjustments of the pianists touch.

    CASIOs remarkable Acoustic and Intelligent Resonator (AiR) sound source faithfully reproduces these nuanced tonal variations unique to the piano. Not only the lingering reverberation from the time the sound starts until it expires, but also the rich resonance of strings reverberating together can be

    reproduced depending on the force with which the keys are struck.

    CASIO digital pianos enable pianists to play the same piece of music in innumerable styles, depending on their intended effect. Although digital, the pianos expressive power is on a par with that of acoustic pianos. The optimal resonance produced by innovative LSI technologies proprietary to CASIO will win the hearts of piano lovers everywhere.

    The characteristics of CASIOs newly developed Multi-Dimensional Morphing AiR* Sound Source are demonstrated through attention to detail in expressing the rich, resonating tones inherent to a piano.

    The temporal changes in tone that create sound you would expect only from a piano beginning with the initial sound and leading into a beautiful extension until the sound eventually disperses are reproduced naturally. Even the length of the reverberation can be controlled at will by the player

    by adjustments in touch, as with an acoustic piano. Seamless variations that respond continuously to the power behind each stroke, not only in terms of volume but also in terms of the nuances of the sound itself, range from a fine and gentle ppp (pianissimo), to an intense and powerful fff (fortissimo). All 88 keys incorporate a stereo resonance simulator that realistically reproduces the string sounds of a grand piano.

    The pleasure of listening to acoustic changes can be obtained by opening

    the grand piano-like lid installed on high-end models (PX-860, AP-650M, AP-460), which places a particular focus on sound-output quality. These developments represent an unprecedented evolution of the digital pianos expressive power in the areas of both sound and resonance

    Digital technology in Harmony with acoustic sound

    air. a new Dimension in soundSound Technology

    CASIOs remarkable Multi-Dimensional Morphing AiR Sound Source provides temporal changes in tone, beginning with the initial sound and leading into natural extensions until the sound disperses. The length of reverberation can be controlled by the players adjustment in touch, as with an acoustic piano, as well as ensuring continuous responsiveness to the power behind each stroke, ranging from a fine and gentle ppp (pianissimo), to an intense and powerful fff (fortissimo). All 88 keys incorporate a stereo resonance simulator that realistically reproduces the string sounds of a grand piano.

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    The acoustic level achieved by a digital piano is determined by the capacity of the memory that stores sounds after sampling. A new high-capacity memory, boasting a capacity of approximately three times in excess of our previous models, is the foundation of our Multi-Dimensional Morphing AiR Sound Source.

    The waveform data sampling capacity has increased dramatically, enabling natural reproduction of the delicate changes in waveforms associated with concert grand pianos. The sound quality and resonance have evolved dramatically, now having the ability to produce simultaneous sounds comprising of up to 256 notes in our high-end models (PX-860, AP-650M, AP-460).

    Digital pianos normally compress and record sound waveform data in their built-in memory. This data is then expanded and played back when recalled. This process is similar to the compressed audio data in MP3 files, and similarly, the replayed sound suffers from digital deterioration in comparison with the original sound.

    The advanced Lossless Audio Compression technology adopted for CASIOs Multi-Dimensional Morphing AiR Sound Source has made it possible to reproduce sounds without this deterioration of the original sound quality. Quite simply, this reproduces musical performances with acoustics that are immeasurably closer to natural piano sounds.

    Digital sampling enables the ultimate in acoustic expression

    lossless audio compressionfor Original sound Quality

    Sound Source memory expanded to reproduce original sounds more naturally.

    New PCM data

    Conventional PCM data

    1

    1

    2

    2

    PC wave memory

    DecompressCompress

    Lossless Audio Compression maintains original sound file quality

    Original sound file Compressed sound file

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    Size of mark indicates level of resonance

    Open strings

    When keys are struck with the damper pedal pressed, their strings resonate along with other strings with vibration frequencies close to their harmonic overtone components, and the open treble strings resonate with them as well.

    Damper Resonance

    String Resonance

    When the G, C and E keys are struck (chord), the strings associated with these keys resonate with each other, and the open treble strings resonate along with them

    When the C key is struck (single tone), the C string and the open treble strings resonate with each other

    Size of the circles indicates level of resonance

    When keys are struck with the damper pedal pressed, their strings resonate along with other strings with vibration frequencies close to their harmonic overtone components, and the open treble strings resonate with them as well.

    Damper Resonance

    String Resonance

    When the G, C and E keys are struck (chord), the strings associated with these keys resonate with each other, and the open treble strings resonate along with them

    When the C key is struck (single tone), the C string and the open treble strings resonate with each other

    Size of the circles indicates level of resonance

    When keys are struck with the damper pedal pressed, their strings resonate along with other strings with vibration frequencies close to their harmonic overtone components, and the open treble strings resonate with them as well.

    Damper Resonance

    String Resonance

    When the G, C and E keys are struck (chord), the strings associated with these keys resonate with each other, and the open treble strings resonate along with them

    When the C key is struck (single tone), the C string and the open treble strings resonate with each other

    Size of the circles indicates level of resonance

    88-Key stereo resonance simulator reproduces Deep acoustics

    string and Damper resonance for authentic acoustics

    1 When the C key is struck (single tone), the C string and the open treble strings resonate with each other.

    2 When the G, C and E keys are struck (as a chord), the strings associated with these keys resonate with each other, and the open treble strings resonate along with them.

    3 When keys are struck with the damper pedal pressed, their strings resonate along with other strings with vibration frequencies close to their harmonic overtone components, and the open treble strings resonate with them as well.

    String resonance

    Damper resonance

    string resonance*1 system achieving deep, rich resonance with 88 keys

    The uniquely rich sound produced by an acoustic piano is a combination of the sound generated by the striking of keys and the associated string resonance created by that original key strike.

    The Multi-Dimensional Morphing AiR Sound Source, unlike ordinary digital pianos, adopts a string resonance system incorporating a stereo resonance simulator for all 88 keys meaning that the resonance of all 88 keys is reproduced completely and naturally. Furthermore, the resonance created by playing a single tone, according to the strength of touch, is differentiated from that of playing a chord. The result is authentic, natural, acoustic-piano resonance.

    Damper resonance*1 achieving a more naturally beautiful resonance than a pedal

    The deep, beautiful resonance resulting from the use of a damper pedal is also reproduced naturally by a stereo resonance simulator installed on all 88 keys, an approach that differs from conventional simulated reproduction-effect processing. The attention to detail goes so far as to simulate the resonance created by the lifting of the dampers themselves when the pedal is pressed.

    A continuously variable system*2 has been adopted for the damper pedal, meaning accurate reproduction of even subtle changes in reverberation caused by the delicate pressure exerted by partial pedal operation. This enables players to authentically employ pedal operation to achieve graceful and expressive performances.

    *1 PX-860, AP-650M and AP-460 models offer four adjustment levels*2 PX-860, AP-650M and AP-460 only

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    lid simulator Delivers Open lid Piano sounds

    High-level performance functions that enhance playing pleasure

    ebony and ivory in Perfect Harmony

    Keyboard System

    When the lid on a grand piano is raised or lowered, the sound volume and quality of the acoustic changes. Casios new piano design incorporates a Lid Simulator*, which reproduces the same acoustic effects for enhanced enjoyment with a digital piano. The acoustic effects of opening and closing the lid are simulated in fine detail, meaning that the nuances of piano sound you are seeking are always available as you play.

    The Hall Simulator function simulates the differing acoust

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