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Online Guide Mic Preamps
Advanced Features

 

Many
MicrophoneA device which converts airborne sound into an electrical signal.
mic
PreampAn amplifier device or circuit that provides initial amplification of a weak electronic signal, usually to 'line' level, in order for it to be processed or passed between other devices, as opposed to a power amp which amplifies a signal in order to drive loudspeakers. Examples include microphone preamps (as dedicated hardware and in mixing desks/recording interfaces) and guitar preamps. Most guitar amps combine the preamp and power amp in the same unit.
preamps
, particularly those marketed as channel strips, feature a variety of input options for boosting various other sources in addition to
MicrophoneA device which converts airborne sound into an electrical signal.
mic
signals. This allows ‘instrument’ level signals such as electric guitar and
BassThe lowest part of the audio frequency range; in popular music, a (generally) rhythmic, low frequency melodic line emphasising the root notes of the chord progression.
bass
to be boosted to line level, and even boosting of weak line level signals. Additionally, various user-selectable input
ImpedanceThe term for electrical resistance when applied to AC current.
impedances
may be offered, which can be used either to better match a particular
MicrophoneA device which converts airborne sound into an electrical signal.
microphone
, or creatively to affect the
TimbreThe subjective quality of a sound, determined by many factors including harmonic content, transients and envelope.
timbre
– lower
ImpedanceThe term for electrical resistance when applied to AC current.
impedances
typically thin out the bottom end, especially with ribbon and dynamic mics.


M/S Decoding

M/S Matrix

Mid-side (M-S) recording is a stereo recording technique involving two
MicrophoneA device which converts airborne sound into an electrical signal.
microphones
where the stereo image is generated from
PhaseIn audio and signal processing in general, phase describes the relationship between one or more signals and time. If two signals are identical but one is delayed by less than one complete wave cycle, the difference is described as a phase difference. This is normally expressed in degrees, with 360 representing a full wavelength.
phase
differences between the sources rather than
Volume1) In audio and music, the loudness or amplitude of a signal. 2) In computing, a fixed amount of storage space, addressed as a single entity ('C:', 'D:' etc). A physical drive may contain more than one volume, but a single volume may also span more than one drive!
volume
differences. One
MicrophoneA device which converts airborne sound into an electrical signal.
microphone
(M) points towards the sound source (usually cardioid), while the other (S) is placed as close as possible to the same point, at ninety degrees. This second
MicrophoneA device which converts airborne sound into an electrical signal.
mic
must have a figure of eight response, so that sound is received at equal
Volume1) In audio and music, the loudness or amplitude of a signal. 2) In computing, a fixed amount of storage space, addressed as a single entity ('C:', 'D:' etc). A physical drive may contain more than one volume, but a single volume may also span more than one drive!
volume
on both sides, but not from the front. Converting this information into a usable stereo signal involves splitting the S signal between two channels, one of which is
PhaseIn audio and signal processing in general, phase describes the relationship between one or more signals and time. If two signals are identical but one is delayed by less than one complete wave cycle, the difference is described as a phase difference. This is normally expressed in degrees, with 360 representing a full wavelength.
phase
reversed, and panning hard left and hard right. If all of this is done using a mixing desk, the S channels must be set to exactly equal levels - raising or lowering them together in relation to the centrally panned M channel adjusts the width of the stereo image.

While none of this requires dedicated hardware, some
MicrophoneA device which converts airborne sound into an electrical signal.
mic
PreampAn amplifier device or circuit that provides initial amplification of a weak electronic signal, usually to 'line' level, in order for it to be processed or passed between other devices, as opposed to a power amp which amplifies a signal in order to drive loudspeakers. Examples include microphone preamps (as dedicated hardware and in mixing desks/recording interfaces) and guitar preamps. Most guitar amps combine the preamp and power amp in the same unit.
preamps
have an M-S decoder built-in which applies this process in order to turn the signals from an M-S array into a general-purpose stereo signal, usually incorporating a number of stereo width
PresetA program or patch forming part of a synthesizer of other device's factory-shipped state. Presets usually can't be overwritten, but they may usually be edited and the result stored to a user program.
presets
or a continuously variable width control. This can be handy for 2-track location recording, though the ability to adjust stereo width on
MixdownThe process of adjusting the relative balance and stereo position of all tracks in a multi-track recording, including processing of individual tracks, and committing the resulting stereo output to a tape or file.
mixdown
is of course sacrificed.

 

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[Conteúdo] [What is a Mic Preamp?] [Preamp or Channel Strip?] [Basic Features] [Sound-Shaping Features] [Advanced Features] [Hotdeals] [Conclusion and Feedback]
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