Calista Home Theaters

An adapter that takes a three prong power cord and plugs into a two prong outlet, used to disconnect the third (ground) pin of the power outlet. WARNING: It can be VERY DANGEROUS to have no ground connection to the case by using a ground lifter and not grounding the unit by other means. Echo Return An input of the console, which brings back the echo (reverberation) signal from the echo chamber or other echo effects device. Calista C2-88 Projector Barrier Micing A method of placing the head of a microphone as close as possible to a reflective surface, preventing phase cancellation. Hybrid A product created by the marriage of two different technologies. Meant here as the combination of a dynamic woofer with an electrostatic transducer. Calista C3-S Security System Bi A prefix meaning two. Direct box Used in line to convert a high impedance signal into a low impedance signal. Audio Most often referring to electrical signals resulting from the sound pr...

A speaker design where the speaker points back into the cabinet and bounces around finally coming out large ports in the front. It is intended to maximize low frequencies in a relatively small cabinet. Hard Disk Recording The recording of digital audio onto a hard disc. Calista C1-9 Home Theater Harmonic Distortion The presence of harmonics in the output signal of a device which were not present in the input signal. Frets Vertical metal wires which sit vertically on the guitar neck. Calista C2-88 Projector Echo Send Control A control to send the signal from the input module to the echo chamber or effects device via the echo buss. Foot Switch A switch placed on the floor and pressed by a musician to do various functions. Error Detection The process of discovery that sonic information bits have been lost in digital audio. Bose Inverse Square Law Simply stated, the fact that in an un-obstructed area (like an open field) the sound pressure level ...

A device that rejects signals that are below a certain frequency (called the cut-off frequency) and passes signals with frequencies that are higher. Key The control of a dynamics processing device by an external audio signal. Calista C3-S Security System Jam Sync A generation of new SMPTE according to the input SMPTE signal Capacitance The property of being able to oppose a change in voltage or store an electrical charge. Calista C1-9 Home Theater CD-ROM An abbreviation of the term Compact Disc, Read Only Memory (A Compact Disc used to store digital data, such as large programs, that can be read by a computer). Delay Outboard sound equipment that can momentarily stores a signal being sent to part of a P.A. system so that delayed reinforced sound reaches the audience at the same time as live sound from the stage. Keynote Number A number assigned to each key of a synthesizer or controller keyboard that is transmitted in the MIDI signal. Bose Cros...

A sampler mis-recognizing a signal sent to it that is at a frequency higher than the Nyquist Frequency. Upon playback, the system will provide a signal at an incorrect frequency (called an alias frequency). Aliasing is a kind of distortion. Editing 1) Changing the sequence of a recording by cutting the recording tape and putting the pieces together in the new sequence with splicing tape. 2) Punching in and then punching out on one or more tracks of a multitrack tape recorder to replace previously recorded performances. 3) Changing the sequence of a digital recording's playback by computer program. Calista C3-S Security System Group 1) A number of channels or faders that can be controlled by one Master VCA slide. 2) A shortening of the term Recording Group (a buss or the signal present on a buss). Highs Short for the term High Frequencies (the audio frequencies from 6000 Hz and above). Calista C1-9 Home Theater Headphones Devices that can be worn on t...

1) One distinct repeat of a sound because of the sound reflecting off a surface. 2) Loosely, used to mean reverberation (the continuing of a sound after the source stops emitting it, caused by many discrete echoes closely spaced in time). Delay (Digital, Analogue) 1) Effect used to create echo…echo…echo…echo…echo… 2) In more advanced systems used in very large venues, delay can be used to time the arrival of the signal to the speakers in the back of the room so that people in the back hear the sound coming from those speakers at the same time that the sound coming from the speakers in the front of the room arrives. Calista C3-S Security System Error Message A prompt on a computer screen telling the operator that an error has occurred. Hypercardioid Pattern A microphone pick up sensitivity pattern where the least sensitive pick up point is more than 90 degrees but less than 150 degrees off axis (usually 120 degrees). Calista C2-88 Projector Input/Output Modul...

A cabinet with rails (or free standing rails) that have holes to accept screws at standard spaces and used to house outboard gear. Hypercardioid Pattern A microphone pick up sensitivity pattern where the least sensitive pick up point is more than 90 degrees but less than 150 degrees off axis (usually 120 degrees). Calista C3-S Security System Bi-Amplification 1) A way of optimizing the efficiency of a speaker system by separately amplifying the High Frequency (HF) and Low Frequency (LF) portions of the sound signal and sending them down two pairs of cables to the speaker. Multipin Speakon connectors have been developed to do this. 2)The process of having of having low-frequency speakers and high-frequency speakers driven by separate amplifiers. Diffraction The breaking up of a sound wave caused by some type of mechanical interference such as a cabinet edge, grill frame, or other similar object. Calista C1-9 Home Theater Input Overload Sending too high of a s...

A grouping of eight information bits. Images The squaring of the waveform that happens in the conversion of digital audio bits into analog signals. Calista C3-S Security System Jam Sync A generation of new SMPTE according to the input SMPTE signal Fletcher Munson Effect A hearing limitation shown by Fletcher Munson Equal Loudness Contours (as music is lowered in volume, it is much more difficult to hear bass frequencies and somewhat harder to hear very high frequencies). Calista C1-9 Home Theater Corner Frequency Same as Cut-Off Frequency (the highest or lowest frequency in the pass band of a filter). (NOUN) Imaging To make a representation or imitation of the original sonic event. Frets Vertical metal wires which sit vertically on the guitar neck. Calista Reviews Headstock The area of the guitar at the end of the neck where the strings are tuned.