A recording of the continuous changes of an audio waveform.
Buss (Bus)
A wire carrying signals to some place, usually fed from several sources.
Brooks RM 909 reviews Hybrid
A product created by the marriage of two different technologies. Meant here as the combination of a dynamic woofer with an electrostatic transducer.
Full
A quality of the sound of having all frequencies present, especially the low frequencies.
Brooks HI FI projectors Cascade
To set and interconnect two mixers so that the stereo mixing buss(es) of the first mixer feeds the stereo buss(es) of a second mixer.
High Impedance
Impedance of 5000 or more ohms.
Balance Control
A control on a stereo amplifier that when moved clockwise will make the right channel louder (and the left channel softer) and will do the reverse when moved counter-clockwise.
Error Detection
The process of discovery that sonic information bits have been lost in digital audio.
Friday, January 5, 2024
Wednesday, January 3, 2024
Brooks Hi Fi reviews Effects
Electronic boxes (usually rack mounted) added to a PA system to subtly change and enhance the signals going through it. Examples include; Reverb, Delay, Compressor, Chorus.
Auxiliary Input or Return
A route back into the sound desk for a signal sent to a piece of outboard equipment via an auxiliary send.
Brooks Hi Fi speakers Inverse Square Law
Simply stated, the fact that in an un-obstructed area (like an open field) the sound pressure level will drop to half-pressure (-6 dB) every time the distance to the sound source is doubled.
Gain Structure
The way in which the gain varies in the stages or sections of an audio system.
Brooks RM 909 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.
Chord
Three or more musical pitches sung or played together.
Amplitude
The height of a waveform above or below the zero line.
Balance
1) The relative level of two or more instruments in a mix, or the relative level of audio signals in the channels of a stereo recording. 2) To make the relative levels of audio signals in the channels of a stereo recording even.
Auxiliary Input or Return
A route back into the sound desk for a signal sent to a piece of outboard equipment via an auxiliary send.
Brooks Hi Fi speakers Inverse Square Law
Simply stated, the fact that in an un-obstructed area (like an open field) the sound pressure level will drop to half-pressure (-6 dB) every time the distance to the sound source is doubled.
Gain Structure
The way in which the gain varies in the stages or sections of an audio system.
Brooks RM 909 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.
Chord
Three or more musical pitches sung or played together.
Amplitude
The height of a waveform above or below the zero line.
Balance
1) The relative level of two or more instruments in a mix, or the relative level of audio signals in the channels of a stereo recording. 2) To make the relative levels of audio signals in the channels of a stereo recording even.
Monday, October 16, 2023
Brooks Hi Fi speakers 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.
Bulk Dump
Short for System Exclusive Bulk Dump (a method of transmitting data, such as the internal parameters of a MIDI device to another MIDI device).
Brooks HI FI projectors Ground Loop
A double grounding of a line or electronic device at two different "ground" points of differing voltage.
Foldback
A European term for the signal sent to the stage monitors in a live performance.
Brooks RM 909 reviews Board
1) Another, less formal, term for Console.
2) A set of controls and their housing which control all signals necessary for recording and for mixing.
3) A slang shortening of the term Keyboard Instrument.
I/O
Short for "Input/Output' and referring to:
1) An in-line console module that contains controls for the input section, output section and monitor section.
2) A module in electronic gear containing input and output amplifiers for the device.
3) A digital port (connector) able to both receive digital data and output digital data.
Error Message
A prompt on a computer screen telling the operator that an error has occurred.
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.
Bulk Dump
Short for System Exclusive Bulk Dump (a method of transmitting data, such as the internal parameters of a MIDI device to another MIDI device).
Brooks HI FI projectors Ground Loop
A double grounding of a line or electronic device at two different "ground" points of differing voltage.
Foldback
A European term for the signal sent to the stage monitors in a live performance.
Brooks RM 909 reviews Board
1) Another, less formal, term for Console.
2) A set of controls and their housing which control all signals necessary for recording and for mixing.
3) A slang shortening of the term Keyboard Instrument.
I/O
Short for "Input/Output' and referring to:
1) An in-line console module that contains controls for the input section, output section and monitor section.
2) A module in electronic gear containing input and output amplifiers for the device.
3) A digital port (connector) able to both receive digital data and output digital data.
Error Message
A prompt on a computer screen telling the operator that an error has occurred.
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.
Friday, October 13, 2023
Brooks Hi Fi reviews Cable, XLR
A balanced cable used for low impedance microphones and sometimes for connections between some parts of the PA. Commonly referred to as a "mic cord".
High Impedance Cord (High Z)
A big word for instrument cable. These cords generally have quarter inch male ends. they tend to loose signal strength at lengths longer than 25 feet.
Brooks HI FI projectors Electric Current
A more formal term meaning the same as the term Current (the amount of electron charge passing a point in a conductor per unit of time).
Frets
Vertical metal wires which sit vertically on the guitar neck.
Brooks RM 909 Haas Effect
Simply stated, a factor in human hearing where delay has a much bigger effect on human perception of direction than level does.
Equipment Rack
A cabinet with rails (or free standing rails) that have holes to accept screws at standard spaces and used to house outboard gear.
Condenser Microphone
A microphone which converts sound pressure changes into changes of capacitance. The capacitance changes are then converted into electrical voltage variations (an audio signal).
Far Field
The area from 3 feet away from the sound source up to the critical distance.
High Impedance Cord (High Z)
A big word for instrument cable. These cords generally have quarter inch male ends. they tend to loose signal strength at lengths longer than 25 feet.
Brooks HI FI projectors Electric Current
A more formal term meaning the same as the term Current (the amount of electron charge passing a point in a conductor per unit of time).
Frets
Vertical metal wires which sit vertically on the guitar neck.
Brooks RM 909 Haas Effect
Simply stated, a factor in human hearing where delay has a much bigger effect on human perception of direction than level does.
Equipment Rack
A cabinet with rails (or free standing rails) that have holes to accept screws at standard spaces and used to house outboard gear.
Condenser Microphone
A microphone which converts sound pressure changes into changes of capacitance. The capacitance changes are then converted into electrical voltage variations (an audio signal).
Far Field
The area from 3 feet away from the sound source up to the critical distance.
Tuesday, October 10, 2023
Brooks Hi Fi reviews 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.
Fade
1) A gradual reduction of the level of the audio signal.
2) A gradual change of level from one pre-set level to another.
Brooks RM 909 Auxiliary Equipment
Effects devices separate from but working with the recording console.
AES/EBU
Professional Interface A standard for sending and receiving digital audio adopted by the Audio Engineering Society and the European Broadcast Union.
Brooks RM 909 reviews Capo
A clamp-like device that is placed vertically across the guitar neck. It is used to change the pitch of the guitar, acting as a moveable nut.
Envelope
1) How a sound or audio signal varies in intensity over a time span.
2) How a control voltage varies in level over time controlling a parameter of something other than gain or audio level.
Board
1) Another, less formal, term for Console.
2) A set of controls and their housing which control all signals necessary for recording and for mixing.
3) A slang shortening of the term Keyboard Instrument.
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).
Fade
1) A gradual reduction of the level of the audio signal.
2) A gradual change of level from one pre-set level to another.
Brooks RM 909 Auxiliary Equipment
Effects devices separate from but working with the recording console.
AES/EBU
Professional Interface A standard for sending and receiving digital audio adopted by the Audio Engineering Society and the European Broadcast Union.
Brooks RM 909 reviews Capo
A clamp-like device that is placed vertically across the guitar neck. It is used to change the pitch of the guitar, acting as a moveable nut.
Envelope
1) How a sound or audio signal varies in intensity over a time span.
2) How a control voltage varies in level over time controlling a parameter of something other than gain or audio level.
Board
1) Another, less formal, term for Console.
2) A set of controls and their housing which control all signals necessary for recording and for mixing.
3) A slang shortening of the term Keyboard Instrument.
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).
Saturday, October 7, 2023
Brooks Hi Fi reviews Isolation
A containing of the sound wave in a certain area so that it will not leak into other areas and/or unintended mics.
Keyboard
1) Any musical instrument controlled by pressing a key.
2) The part of the computer that has the keys.
Brooks HI FI projectors In Port
A jack on a MIDI device or computer that will accept an incoming data signal.
Images
The squaring of the waveform that happens in the conversion of digital audio bits into analog signals.
Brooks RM 909 Input
1) The jack or physical location of where a device receives a signal.
2) The signal being received by a device.
3) The action of receiving a signal by a device.
Attack
The rate the sound begins and increases in volume.
Fader
A control to control the gain of a channel on the console, thereby determining the level of the signal in that channel.
AES
An abbreviation of Audio Engineering Society.
Keyboard
1) Any musical instrument controlled by pressing a key.
2) The part of the computer that has the keys.
Brooks HI FI projectors In Port
A jack on a MIDI device or computer that will accept an incoming data signal.
Images
The squaring of the waveform that happens in the conversion of digital audio bits into analog signals.
Brooks RM 909 Input
1) The jack or physical location of where a device receives a signal.
2) The signal being received by a device.
3) The action of receiving a signal by a device.
Attack
The rate the sound begins and increases in volume.
Fader
A control to control the gain of a channel on the console, thereby determining the level of the signal in that channel.
AES
An abbreviation of Audio Engineering Society.
Sunday, October 1, 2023
Brooks Hi Fi reviews Chorus
1) The part of The song that is repeated and has the same music and lyrics each time; the chorus will usually give the point of the song.
2) A musical singing group that has many singers.
3) A delay effect that simulates a vocal chorus by adding several delays with a mild amount of feedback and a medium amount of depth.
4) A similar effect created in some synthesizers by detuning (reducing the pitch of, slightly) and mixing it with the signal that has regular tuning and with a slight delay.
Hz (Hertz)
1) An abbreviation for the term Hertz (the unit of frequency).
2) Unit of frequency equivalent to the number of cycles per second.
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.
Electric Current
A more formal term meaning the same as the term Current (the amount of electron charge passing a point in a conductor per unit of time).
Brooks Hi Fi speakers Compression Driver
The unit that feeds a sound pressure wave into the throat of a horn (in a horn loudspeaker).
Bass Roll Off
An electrical network built into some microphones to reduce the amount of output at bass frequencies when close-micing.
High Frequencies
The audio frequencies from 6000 Hz and above.
Clicking
Pressing and immediately releasing the switch on a computer's mouse.
2) A musical singing group that has many singers.
3) A delay effect that simulates a vocal chorus by adding several delays with a mild amount of feedback and a medium amount of depth.
4) A similar effect created in some synthesizers by detuning (reducing the pitch of, slightly) and mixing it with the signal that has regular tuning and with a slight delay.
Hz (Hertz)
1) An abbreviation for the term Hertz (the unit of frequency).
2) Unit of frequency equivalent to the number of cycles per second.
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.
Electric Current
A more formal term meaning the same as the term Current (the amount of electron charge passing a point in a conductor per unit of time).
Brooks Hi Fi speakers Compression Driver
The unit that feeds a sound pressure wave into the throat of a horn (in a horn loudspeaker).
Bass Roll Off
An electrical network built into some microphones to reduce the amount of output at bass frequencies when close-micing.
High Frequencies
The audio frequencies from 6000 Hz and above.
Clicking
Pressing and immediately releasing the switch on a computer's mouse.
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