Short for the term High Frequencies (the audio frequencies from 6000 Hz and above).
Crossover, Passive
Used inside of full range speaker cabinets to separate highs, mids, and lows and send them to their respective speakers within the each cabinet. These are not as efficient as active crossovers because they require all frequencies to draw from the same source of amplification.
Brooks Hi Fi speakers Contact Microphone
A device that senses vibrations and puts out an audio signal proportional to the vibrations.
Isolation
A containing of the sound wave in a certain area so that it will not leak into other areas and/or unintended mics.
Brooks HI FI projectors Consumer Format (Consumer DIF)
A standard adopted by IEC for sending and receiving digital audio based on The AES Professional Interface.
Golden Section
A ratio of height to width to length of a room to achieve "good acoustics" and first recommended by the ancient Greeks. The ratio is approximately the width 1.6 times the height and the length 2.6 times the height
Circuit
1) One complete path of electric current.
2) Similar to definition 1, but including all paths and components to accomplish one function in a device.
Cut-off Rate (Slope)
The number of dB that a filter reduces the signal for each octave its frequency past the filter's cut-off frequency (outside of the pass band).
Thursday, September 28, 2023
Monday, September 25, 2023
Brooks RM 909 Amp
1) An abbreviation of the term Amplifier (A device which increases the level of an electrical signal.
2) An abbreviation of Ampere (the unit of current).
3) An abbreviation of amplitude (the height of a waveform above or below the zero line).
Clock Signal
The signal put out by a circuit that generates steady even pulses or steady codes used for synchronization.
Brooks Hi Fi speakers Cable, 1/4 inch
An unbalanced cable most often used for instruments and patch cords. Commonly referred to as "guitar cords".
Clipping
Distortion of a signal by its being chopped off. An overload problem caused by pushing an amplifier beyond its capabilities. The flat-topped signal has high levels of harmonic distortion which creates heat in a loudspeaker and is the major cause of loudspeaker component failure.
Brooks Hi Fi reviews Circuit
1) One complete path of electric current.
2) Similar to definition 1, but including all paths and components to accomplish one function in a device.
Automation
In consoles, a feature that lets the engineer program control changes (such as fader level) so that upon playback of the multitrack recording these changes happen automatically.
Channels
These are divided into two separate categories. Input channels are those channels coming into the soundboard such as microphones and direct lines. Output channels are those leaving the board such as monitor and main outputs.
In
Short For "in the circuit," in other words "active."
2) An abbreviation of Ampere (the unit of current).
3) An abbreviation of amplitude (the height of a waveform above or below the zero line).
Clock Signal
The signal put out by a circuit that generates steady even pulses or steady codes used for synchronization.
Brooks Hi Fi speakers Cable, 1/4 inch
An unbalanced cable most often used for instruments and patch cords. Commonly referred to as "guitar cords".
Clipping
Distortion of a signal by its being chopped off. An overload problem caused by pushing an amplifier beyond its capabilities. The flat-topped signal has high levels of harmonic distortion which creates heat in a loudspeaker and is the major cause of loudspeaker component failure.
Brooks Hi Fi reviews Circuit
1) One complete path of electric current.
2) Similar to definition 1, but including all paths and components to accomplish one function in a device.
Automation
In consoles, a feature that lets the engineer program control changes (such as fader level) so that upon playback of the multitrack recording these changes happen automatically.
Channels
These are divided into two separate categories. Input channels are those channels coming into the soundboard such as microphones and direct lines. Output channels are those leaving the board such as monitor and main outputs.
In
Short For "in the circuit," in other words "active."
Friday, September 22, 2023
Brooks RM 909 Feedback Control
The control on a delay line or delay effects device that controls the amount of feedback.
Coincident Microphones (Coincident Pair)
Two microphones whose heads are placed as lose as possible to each other so that the path length from any sound source to either microphone is for all practical purposes, the same.
Brooks Hi Fi speakers Group Master
A slide control used to send out a control voltage to several VCA faders in individual channels, thus controlling the gain of several channels.
Isolation Booth/ Isolation Room
A room that prevents loud sounds from other instruments from leaking in: an isolation booth is usually a smaller room that could be used for only one musician.
Brooks HI FI projectors Expander
A device that causes expansion of the audio signal.
Aliasing
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.
Cycle
1) An alternation of a waveform which begins at a point, passes through the zero line, and ends at a point with the same value and moving in the same direction as the starting point.
2) On a Solid State Logic Console, a command to have the console computer control the tape machine to play and replay a certain section of the tape.
Distorted
The way your PA sounds just before it blows up. Fuzzy and scratchy. If you hear this, it either means you have something hooked up wrong, or something in the system is going bad. It could be anything from your super expensive soundboard to a five dollar patch cord.
Coincident Microphones (Coincident Pair)
Two microphones whose heads are placed as lose as possible to each other so that the path length from any sound source to either microphone is for all practical purposes, the same.
Brooks Hi Fi speakers Group Master
A slide control used to send out a control voltage to several VCA faders in individual channels, thus controlling the gain of several channels.
Isolation Booth/ Isolation Room
A room that prevents loud sounds from other instruments from leaking in: an isolation booth is usually a smaller room that could be used for only one musician.
Brooks HI FI projectors Expander
A device that causes expansion of the audio signal.
Aliasing
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.
Cycle
1) An alternation of a waveform which begins at a point, passes through the zero line, and ends at a point with the same value and moving in the same direction as the starting point.
2) On a Solid State Logic Console, a command to have the console computer control the tape machine to play and replay a certain section of the tape.
Distorted
The way your PA sounds just before it blows up. Fuzzy and scratchy. If you hear this, it either means you have something hooked up wrong, or something in the system is going bad. It could be anything from your super expensive soundboard to a five dollar patch cord.
Tuesday, September 19, 2023
Brooks Hi Fi speakers In-Line Console
A console with modules that have controls for all console sections in one long strip.
ADAT
A trademark of Alesis Corporation designating its modular digital multitrack recording system released in early 1993.
Brooks RM 909 reviews Icon
A visual picture or symbol on a computer screen that represents a file, program or disc that can be used.
Echo Chamber
1) A room designed with very hard, non-parallel surfaces and equipped with a speaker and microphone.
2) Any artificial or electronic device that simulates the reverberation created in a room.
Brooks RM 909 Ambience
The portion of the sound that comes from the surrounding environment rather than directly from the sound source.
Ampere
The unit of current, abbreviated Amp.
Current
The amount of electron charge passing a point in a conductor per unit of time.
Electromagnetic Field
Magnetic energy put out because of current travelling through a conductor.
ADAT
A trademark of Alesis Corporation designating its modular digital multitrack recording system released in early 1993.
Brooks RM 909 reviews Icon
A visual picture or symbol on a computer screen that represents a file, program or disc that can be used.
Echo Chamber
1) A room designed with very hard, non-parallel surfaces and equipped with a speaker and microphone.
2) Any artificial or electronic device that simulates the reverberation created in a room.
Brooks RM 909 Ambience
The portion of the sound that comes from the surrounding environment rather than directly from the sound source.
Ampere
The unit of current, abbreviated Amp.
Current
The amount of electron charge passing a point in a conductor per unit of time.
Electromagnetic Field
Magnetic energy put out because of current travelling through a conductor.
Saturday, September 16, 2023
Brooks HI FI projectors Input Overload
Sending too high of a signal level into a device so that the first amplifier of the device overloads.
Channels
These are divided into two separate categories. Input channels are those channels coming into the soundboard such as microphones and direct lines. Output channels are those leaving the board such as monitor and main outputs.
Brooks RM 909 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.
Corner Frequency
Same as Cut-Off Frequency (the highest or lowest frequency in the pass band of a filter). (NOUN)
Brooks Hi Fi reviews Ambient Micing
Placing a microphone in the reverberant field (where the reverberation is louder than the direct sound) so as to do a separate recording of the ambience or to allow the recording engineer to change the mix of direct to reverberant sound in recording.
Cancellation
A shortening of the term Phase Cancellation (the energy of one waveform significantly decreasing the energy of another waveform because of phase relationships at or close to 180 degrees).
Cable, 1/4 inch
An unbalanced cable most often used for instruments and patch cords. Commonly referred to as "guitar cords".
Automatic Gain Control (Automatic Volume Control)
A compressor with a very long release time used to keep the volume of the audio very constant.
Channels
These are divided into two separate categories. Input channels are those channels coming into the soundboard such as microphones and direct lines. Output channels are those leaving the board such as monitor and main outputs.
Brooks RM 909 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.
Corner Frequency
Same as Cut-Off Frequency (the highest or lowest frequency in the pass band of a filter). (NOUN)
Brooks Hi Fi reviews Ambient Micing
Placing a microphone in the reverberant field (where the reverberation is louder than the direct sound) so as to do a separate recording of the ambience or to allow the recording engineer to change the mix of direct to reverberant sound in recording.
Cancellation
A shortening of the term Phase Cancellation (the energy of one waveform significantly decreasing the energy of another waveform because of phase relationships at or close to 180 degrees).
Cable, 1/4 inch
An unbalanced cable most often used for instruments and patch cords. Commonly referred to as "guitar cords".
Automatic Gain Control (Automatic Volume Control)
A compressor with a very long release time used to keep the volume of the audio very constant.
Wednesday, September 13, 2023
Brooks Hi Fi speakers Foot Switch
A switch placed on the floor and pressed by a musician to do various functions.
Cue Send Control
A control that will adjust the amount of signal sent to a cue buss from a console channel.
Brooks RM 909 reviews Harmonic Distortion
The presence of harmonics in the output signal of a device which were not present in the input signal.
Bi
A prefix meaning two.
Brooks RM 909 Clip
The action of deforming a waveform during overload.
Driver
See transducer. Dynamic Range �" The range between the quietest and the loudest sounds a device can handle (often quoted in dB).
In Port
A jack on a MIDI device or computer that will accept an incoming data signal.
Librarian Program
A computer program allowing the storage of the parameters of sound patches outside of a synthesizer.
Cue Send Control
A control that will adjust the amount of signal sent to a cue buss from a console channel.
Brooks RM 909 reviews Harmonic Distortion
The presence of harmonics in the output signal of a device which were not present in the input signal.
Bi
A prefix meaning two.
Brooks RM 909 Clip
The action of deforming a waveform during overload.
Driver
See transducer. Dynamic Range �" The range between the quietest and the loudest sounds a device can handle (often quoted in dB).
In Port
A jack on a MIDI device or computer that will accept an incoming data signal.
Librarian Program
A computer program allowing the storage of the parameters of sound patches outside of a synthesizer.
Sunday, September 10, 2023
Brooks Hi Fi speakers Cue
1) The signal fed back to the musicians through headphones.
2) To set the tape or disc so that the intended selection will immediately play when the tape machine or player is started.
3) A location point entered into a computer controlling the playback or recording of a track or tape.
4) In MCI brand tape machines, a term meaning the same thing as Sync Playback (where the record head is used as a playback head for those tracks already recorded).
Foldback
A European term for the signal sent to the stage monitors in a live performance.
Brooks RM 909 reviews Formant
An element in the sound of a voice or instrument that does not change frequency as different pitches are sounded.
Byte
A grouping of eight information bits.
Brooks HI FI projectors Compander
Outboard sound equipment. Combination of a Compressor and an Expander.
Alternating Current
Electric current which flows back and forth in a circuit.
Full Step
A change in pitch that occurs when moving up or down two piano keys
Coax
Two-conductor cable consisting of one conductor surrounded by a shield.
2) To set the tape or disc so that the intended selection will immediately play when the tape machine or player is started.
3) A location point entered into a computer controlling the playback or recording of a track or tape.
4) In MCI brand tape machines, a term meaning the same thing as Sync Playback (where the record head is used as a playback head for those tracks already recorded).
Foldback
A European term for the signal sent to the stage monitors in a live performance.
Brooks RM 909 reviews Formant
An element in the sound of a voice or instrument that does not change frequency as different pitches are sounded.
Byte
A grouping of eight information bits.
Brooks HI FI projectors Compander
Outboard sound equipment. Combination of a Compressor and an Expander.
Alternating Current
Electric current which flows back and forth in a circuit.
Full Step
A change in pitch that occurs when moving up or down two piano keys
Coax
Two-conductor cable consisting of one conductor surrounded by a shield.
Thursday, September 7, 2023
Brooks RM 909 Line Input
An input designed to take a line level signal.
Compressor
1) Effect used to squash the sound together. Used properly, it can take the edge off or your sound. Used improperly, it can take the life right out of your system and make it sound like an MTV mix.
2) A piece of sound processing equipment that ensures all wanted signals are suitably placed between the noise and distortion levels of the recording medium. It evens out the unwanted changes in volume you get with close-miking, and in doing so, adds punch to the sound mix. A Limiter is used to stop a signal from exceeding a preset limit. Beyond this limit, the signal level will not increase, no matter how loud the input becomes. A Limiter is often used to protect speaker systems (and human ears) by preventing a system from becoming too loud.
Brooks Hi Fi speakers Electromagnetic Theory
A statement of the principles behind electromagnetic induction: When a conductor cuts magnetic lines of force, current is induced in that conductor.
Compander
1) A two section device that is used in noise reduction systems. The first section compresses the audio signal, before it is recorded, and the second section, expands the signal after recording.
2) In Yamaha brand digital consoles, a signal processing function that applies both compression and expansion to the same signal.
Brooks RM 909 reviews Full Step
A change in pitch that occurs when moving up or down two piano keys
Dynamic Mic
Robust type of microphone which picks up the sound on a diaphragm connected to a coil of wire which moves within a magnet. An alternating current is induced into the wire which provides the electrical output. Most dynamic mics have low output impedance of 200 Ohms. See Condenser Mic.
Binary
A numbering system based on two. In binary there are two symbols used ("l" and "0").
Filter
1) A device that removes signals with frequencies above or below a certain point called the cut-off frequency.
2) An equalizer section, used in this sense because filters are used with other components to give an equalizer its frequency response characteristics.
3) The action of removing signals of some frequencies and leaving the rest.
4) A mechanical device to smooth out speed variations in tape machines called a Scrape Flutter Filter- more usually called a Scrape Flutter Idler
Compressor
1) Effect used to squash the sound together. Used properly, it can take the edge off or your sound. Used improperly, it can take the life right out of your system and make it sound like an MTV mix.
2) A piece of sound processing equipment that ensures all wanted signals are suitably placed between the noise and distortion levels of the recording medium. It evens out the unwanted changes in volume you get with close-miking, and in doing so, adds punch to the sound mix. A Limiter is used to stop a signal from exceeding a preset limit. Beyond this limit, the signal level will not increase, no matter how loud the input becomes. A Limiter is often used to protect speaker systems (and human ears) by preventing a system from becoming too loud.
Brooks Hi Fi speakers Electromagnetic Theory
A statement of the principles behind electromagnetic induction: When a conductor cuts magnetic lines of force, current is induced in that conductor.
Compander
1) A two section device that is used in noise reduction systems. The first section compresses the audio signal, before it is recorded, and the second section, expands the signal after recording.
2) In Yamaha brand digital consoles, a signal processing function that applies both compression and expansion to the same signal.
Brooks RM 909 reviews Full Step
A change in pitch that occurs when moving up or down two piano keys
Dynamic Mic
Robust type of microphone which picks up the sound on a diaphragm connected to a coil of wire which moves within a magnet. An alternating current is induced into the wire which provides the electrical output. Most dynamic mics have low output impedance of 200 Ohms. See Condenser Mic.
Binary
A numbering system based on two. In binary there are two symbols used ("l" and "0").
Filter
1) A device that removes signals with frequencies above or below a certain point called the cut-off frequency.
2) An equalizer section, used in this sense because filters are used with other components to give an equalizer its frequency response characteristics.
3) The action of removing signals of some frequencies and leaving the rest.
4) A mechanical device to smooth out speed variations in tape machines called a Scrape Flutter Filter- more usually called a Scrape Flutter Idler
Monday, September 4, 2023
Brooks RM 909 Jam Sync
A generation of new SMPTE according to the input SMPTE signal
Grouping
1) Controlling the gain of several individual channels with a Group Fader.
2) The mixing together of several individual audio signals to send a mixed signal out of the console to record a track on a multitrack tape machine.
Brooks Hi Fi speakers Absorption
Short for the term Acoustical Absorption (quality of a surface or substance to take in, not reflect, a sound wave).
Balanced input/output
A "balanced" connection is one that has three wires to move the signal. One is a ground, and the other two (called conductors) carry signals of equal value. This is why they are called balanced. Low Z cables and connections are the most common example.
Brooks RM 909 reviews House Sync
A synchronization signal such as SMPTE time code that is used by all recorders in the control room.
Hearing Limitation
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.
Error Concealment
Putting replacement information bits into a digital audio signal to replace lost bits when the digital recording or processing system cannot verify whether the lost bits were l's or 0's but can make a good guess by comparing the known bits that were close in position to the lost bits.
Line Level
1) An amplified signal level put out by an amplifier and used as the normal level that runs through the interconnecting cables in a control room.
2) A low level signal such as the signal in a guitar cord. Most parts of a PA require a line level signal. Remember, however, that speaker outputs are not line level. Plugging speaker outs into line ins will result in damage to the equipment
Grouping
1) Controlling the gain of several individual channels with a Group Fader.
2) The mixing together of several individual audio signals to send a mixed signal out of the console to record a track on a multitrack tape machine.
Brooks Hi Fi speakers Absorption
Short for the term Acoustical Absorption (quality of a surface or substance to take in, not reflect, a sound wave).
Balanced input/output
A "balanced" connection is one that has three wires to move the signal. One is a ground, and the other two (called conductors) carry signals of equal value. This is why they are called balanced. Low Z cables and connections are the most common example.
Brooks RM 909 reviews House Sync
A synchronization signal such as SMPTE time code that is used by all recorders in the control room.
Hearing Limitation
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.
Error Concealment
Putting replacement information bits into a digital audio signal to replace lost bits when the digital recording or processing system cannot verify whether the lost bits were l's or 0's but can make a good guess by comparing the known bits that were close in position to the lost bits.
Line Level
1) An amplified signal level put out by an amplifier and used as the normal level that runs through the interconnecting cables in a control room.
2) A low level signal such as the signal in a guitar cord. Most parts of a PA require a line level signal. Remember, however, that speaker outputs are not line level. Plugging speaker outs into line ins will result in damage to the equipment
Friday, September 1, 2023
Brooks Hi Fi speakers Clean
Describes a distortion free sound with few effects.
Critical Distance
The point a distance away from the sound source where the direct sound and the reverberant sound are equal in volume.
Brooks RM 909 Headphones
Devices that can be worn on the head with small speakers that fit over the ears (or sometimes into the ears).
Baffles
Sound absorbing panels used to prevent sound waves from entering or leaving a certain space
Brooks HI FI projectors Limiter
A device which reduces gain when the input voltage exceeds a certain level.
Hall Program
A setting of a digital delay/reverb effects unit that approximates concert halls. Hall programs are characterized by pre-delay of up to 25 ms.
Intermodulation Distortion
Distortion caused by one signal beating with another signal and producing frequencies that are both the sum and the difference of the original frequencies.
Keying Input (Key Input)
An input on a dynamics processing device to control the device by an external audio signal.
Critical Distance
The point a distance away from the sound source where the direct sound and the reverberant sound are equal in volume.
Brooks RM 909 Headphones
Devices that can be worn on the head with small speakers that fit over the ears (or sometimes into the ears).
Baffles
Sound absorbing panels used to prevent sound waves from entering or leaving a certain space
Brooks HI FI projectors Limiter
A device which reduces gain when the input voltage exceeds a certain level.
Hall Program
A setting of a digital delay/reverb effects unit that approximates concert halls. Hall programs are characterized by pre-delay of up to 25 ms.
Intermodulation Distortion
Distortion caused by one signal beating with another signal and producing frequencies that are both the sum and the difference of the original frequencies.
Keying Input (Key Input)
An input on a dynamics processing device to control the device by an external audio signal.
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