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Entries found for search: ESS

multieffects processor : An effects processor which is capable of producing several types of effects at once.

multisession : Allows the track-at-once recording of independent sessions to be written to blank sections of a CD. In multisession mode, the disc is finalized after the last session. Compare with disk-at-once, whereby the entire disc is written as one session.

stress bridge : A small capsule within a breath controller that functions as a tiny potentiometer and produces a varying voltage that i’s then converted into athe MIDI data stream.

static signal processing : Signal processing in which the nature of the input signal has no effect on the type or amount of processing applied to it, as opposed to dynamic signal processing.

split-band compression : Compression where different sections of the audio spectrum are compressed separately. With a wideband compressor, if there is a dominant portion of the spectrum, no matter how small, it affects the whole waveform. With split-band devices, the greatest effect is with high ratios, where the effect is more like localized limiting. Split-band compressors are similar to multiband audio processors in the first stage of audio processing.

sound pressure level (SPL) : The loudness of an acoustic wave stated in dBindB that is proportional to the logarithm of its acoustic intensity. A sound wave progressing through air causes the instantaneous air pressure at any given point to vary above and below the barometric pressure in accordance with the waveform of the sound. This variation in pressure is used as a quantitative measure of the strength of the sound, and is called sound pressure. This is the quantity which a pressure microphone measures, and if it is expressed on a dBadB scale and referenced to a pressure of 20 µpascals, it is called the sound pressure level. The amplitude dynamic range of human hearing goes from 0dB, or 10 -16 watt/sq.cm., the upper threshold of human hearing to 130dB or 10-4 watt/sq.cm., the threshold of pain, a factor of 1013 in range.

Sound Controller Message : One of ten defined MIDI Controller Change messages which are assigned to general-purpose parameters in a synthesizer or effects unit and allow real-time editing of sound quality and effects from the sequencer.

soft knee compression : The output of a compressor whose gain reduction is brought in progressively over a range of input signal values, such as over 10db or so, starting a few dBs below the threshold.. When the input signal amplitude comes within the range of the threshold, the compressor starts to apply again reduction, but with a very low ratio setting. As the input level increases, the compression is automatically increased until, at the threshold level, the ratio becomes infinite. Compare with hard knee compression.

Single Note Retuning Message : A Universal System-Exclusive (SyEx) message of the real-time type which is intended to provide a performance control over the tuning of an individual note.

signal processing : The modulation of an audio signal in a generally desirable way by any device inserted into the audio chain path.

signal processor : See processor.

side-addressed : See end-addressed

session tape : The original recording made during a live playing session.

Essence In a digital stream of file, essence is the portion of the data that contains the ‘raw’ or basic information of interest, excluding metadata and framing.

random access : Storage systems where data may be stored and accessed in any order, independent of the ordinal position of the data when it was originally recorded. This is the opposite of linear (3) access, or linear recording media such as magnetic tape which necessarily preserves the sequential relation of the data as it is recorded, and depends on this sequential relation for accurate playback. See non-linear recording.

processor : Sometimes used synonymously with the term effects device, a processor circuit modifies a signal passing through it, whereas an effects circuit leaves the original signal intact and adds something to it. Processors include EQ, compressor/limiters, expanders/gates, panners, and single-ended noise reduction units.

pressure zone effect : See boundary effect.

pressure operation : A type of microphone construction, using a sealed box with a diaphragm on one end (much like a drum), producing an omnidirectional polar. This design usually provides a very smooth, extended, and flat frequency response. See pressure gradient.

pressure sensitivity : See aftertouch, channel pressure, poly pressure.

pressure : See aftertouch.

pressure gradient : A type of microphone construction which supports the transducer diaphragm on the top and bottom, leaving it open to the air on both sides. This produces a figure-eight response patternpolar response. Mics of this type are more complex and delicate than pressure operation-type mics, and have many more mechanical and physical problems such as extreme susceptibility to handling noise, rumble, sensitivity to wind, and proximity effect. In addition, the diaphragm assembly has to compensate for the inadequacies of the pressure gradient by making the diaphragm resonate at very low frequencies, generally restricting the smoothness and extension of the very lowest part of the audio spectrum. These disadvantages are, however, overlooked because of the directivity of these microphones. Cardioid microphones are a combination of pressure gradient and pressure operation transduction within a single unit.

poly pressure : Polyphonic pressure. A type of MIDI Channel Voice message in which each key senses and transmits aftertouch data independently. With poly pressure, if a chord is played, pressing into the top note, only this note will be modulated without affecting the others. Expensive to implement, so rarely seen. Also called poly aftertouch or key pressure. Compare with channel pressure.

Pit Signal Processing (PSP) : See digital watermark.

on-board effects processor : This can be used in a synthesizer to add reverb, chorusing, or other effects. On most synthesizers, it is possible to set the effect send level separately for each of the multitimbral parts. As opposed to outboard.

sweetening session : A recording session in which a previously made recording is augmented by the addition of other instruments. See also overdub.

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