Brooks Audio Design

An effect caused by an approximately even mix of a modulated (varying) short delay with the direct signal. Bass Roll Off An electrical network built into some microphones to reduce the amount of output at bass frequencies when close-micing. Brooks RM 909 Electrostatic Charge The excess or deficiency of electrons in a given area. 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. Brooks HI FI projectors Fidelity The recording or reproduction quality. Boost To increase gain, especially to increase gain at specific frequencies with an equalizer. Condenser Mic (Capacitor Mic) A microphone that uses the varying capacitance between two plates with a voltage applied across them to convert sound to electrical pulses. Condenser microphones need a power supply to provide the voltage across the plates, which may be provided by a battery within the case of the...

An additional output from a sound desk that can be used for foldback or monitoring without tying up the main outputs. Each input channel will have a path to the Aux buss. Also used for feeding a signal to an effects processor. See Auxiliary Return. Ground Lift A switch that breaks the connection between the ground point in one circuit and the ground point in another circuit. Brooks Hi Fi speakers Limiter A device which reduces gain when the input voltage exceeds a certain level. Clock Signal The signal put out by a circuit that generates steady even pulses or steady codes used for synchronization. Brooks RM 909 reviews Frequency The number of cycles of a waveform occurring in a second. Hall A large building designed for concerts; also called a concert hall. Ground Loop A double grounding of a line or electronic device at two different "ground" points of differing voltage. Echo Return An input of the console, which brings back the ec...

An inability of the ear to hear important characteristics of sound under certain conditions. Characteristics that can be affected include pitch, level, clarity, presence and direction. Beats Per Minute BPM The number of steady even pulses in music occurring in one minute and there fore defining the tempo of the song. Brooks Hi Fi speakers Efficiency The acoustic power delivered for a given electrical input. Often expressed as decibels/watt/meter (dB/w/m). ESL �" Abbreviation for electrostatic loudspeaker. Graphic Equalizer An device with several slides controlling the gain of audio signal present which is within one of several evenly spaced frequency bands (spaced according to octaves). Brooks HI FI projectors IC Abbreviation of Integrated Circuit (A miniature circuit of many components that is in small, sealed housing with prongs to connect it into equipment). Jack Bay A series of jacks which have connections for most of the inputs and outputs of t...

The extent to which any signal handling process is accomplished without amplitude distortion. Ground Loop A double grounding of a line or electronic device at two different "ground" points of differing voltage. Brooks RM 909 reviews Feedback 1) The delayed signal sent back to the input of a delay line, used in repeat-echo effects. 2) The pickup of the signal out of a channel by its input or the howling sound that this produces. 3) In an amplifier, the phase reversed output signal sent back to its input, reducing gain but also distortion and noise. 4) This occurs when the sound coming out of the speakers goes back into the microphones, then back out the speakers, then back into the mics…and so on. This can build very quickly to a point where everyone in the room is holding their ears and screaming at you. It can also cause damage to the PA. Crossover (Crossover Network) A set of filters that "split" the audio signal into two or more bands (t...

The front or body of the guitar. Absorption Short for the term Acoustical Absorption (quality of a surface or substance to take in, not reflect, a sound wave). Brooks Hi Fi reviews Bass 1) The lower range of audio frequencies up to approximately 250 Hz. 2) Short for Bass Guitar. 3) Lower end of the musical scale. In acoustics, the range (below about 200 Hz) in which there are difficulties, principally in the reproduction of sound, due to the large wavelengths involved. 4) The lower frequencies. 5) On the soundboard this should refer to the bass guitar channel, not the bass drum. 6) The lowest frequencies of sound. Bi-Amplification uses an electronic crossover or line-level amplifiers for the high and low frequency loudspeaker drivers. Electromagnetic Field Magnetic energy put out because of current travelling through a conductor. Brooks HI FI projectors Hybrid A product created by the marriage of two different technologies. Meant here as the combinat...

Negatively charged particles, which revolve around the centre of atoms. The movement of such electrons down a conductor causes electrical current. Edit A switch that does different things depending on the operational mode that the machine is in: 1) If a computer-controlled transport is in "Stop," pushing the "Edit" switch deactivates the computer-controlled tension system and allows the reels to be moved by hand to find the exact spot desired on the tape. 2) If the machine is in "Play", the "Edit" switch makes the take-up reel cease taking up the tape and it falls to the floor. 3) If the machine is in a fast-wind mode, the tape lifters are defeated so the tape is in contact with the reproduce head and the engineer can hear where the selections begin and end. Brooks Hi Fi speakers Acoustic/Acoustical Having to do with sound that can be heard by the ears. AcousticsThe behaviour of sound and its study. The acoustics of a room d...

A unit that will add effects to a direct guitar signal, including a simulated instrument amplifier sound and (often) delay and reverb effects. Clock Signal The signal put out by a circuit that generates steady even pulses or steady codes used for synchronization. Brooks Hi Fi reviews Alternating Current Electric current which flows back and forth in a circuit. Instrument Amplifier A device that has a power amplifier and speaker in a case (or in separate cases) to reproduce the signal put out by an electric instrument (such as an electric guitar) and to allow the instrument to be heard. Brooks RM 909 reviews Expansion The opposite of compression; for example, an expander may allow the signal to increase 2 dB every time the signal input increased by 1 dB. Echo Return An input of the console, which brings back the echo (reverberation) signal from the echo chamber or other echo effects device. Cancellation A shortening of the term Phase Cancellation (t...