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This is an electronic cable that uses twin signal cables, both isolated from the earth, that are of opposite polarity but equal potential. This kind of cabling is often used for microphone connections. A Balanced Line is commonly used to reduce noise picked up by the cabling. As the polarity of each of the signal cables is opposite, this means that they are 180 degrees out of phase. Any noise introduced to the signal during transmission is picked up equally by both wires and can then be eliminated during the re-combination of the signal using Phase Cancellation.
Beats are the regular variations in amplitude caused when two similar sounds that are close in frequency are played simultaneously. The resulting addition of the sound waves causes a periodic pulsing in the overall sound. This is something regularly witnessed by string instrument players during the tuning process.
This is caused when spill from audio or control circuitry, or an external source, spills onto the audio signal. The additional signal may be at a high frequency (HF Bias), or a DC offset (DC Bias).
This is how sounds are perceived and the placement of the source is determined when a sound wave arrives at both ears. In Binaural Recording, this effect is captured by placing a microphone at each ear or using a simulated head that contains microphones in the position of the ears.
In the digital domain Digital Signal Processing (DSP) has been used to simulate the binaural effect by treating a mono source signal with a Head Related Transform Function (HRTF).
When recording several instruments at once, if there is not enough isolation you can hear a little of another instrument on a track, this is called bleed.
On a stringed instrument, the bridge is mounted on the instrument body. The strings, held by the tail piece, pass over the bridge and are suspended over the neck until they pass over the nut.
Connecting passage of contrasting music between two important themes in a composition and commonly in popular music, a musical bridge is used to prepare for the return of the original theme.
In thirty-two bar form (AABA) the bridge (B) is also known as the middle-eight or release. In verse-chorus form the bridge is less constrained.
Music contrast in the bridge is achieved by rhythm and / or tempo change, and often by a change in the key of music.
Bridge is sometimes used to describe a section between a verse and chorus, commonly called a pre-chorus. In the classical music sonata form the transition between the two themes is also called a bridge, although it is more formally called a "transition theme".
Regarding lyrics, the bridge is often used as a mechanism to reflect on the previous lyrics and to set up the listener for the pay off or climax of the song.
This is a common phrase for mixing a number of tracks together, and recording the result onto a new track, as a means of freeing up tracks on a multi-track recorder. For example mixing 5 tracks together into a stereo pair. The original 5 tracks can then be wiped clean. This also sometimes called 'jumping'.
An audio signal path that a number of inputs may be connected. The Buss signal can then be used to feed one or more outputs. In a Mixing Desk the Buss is essentially a wire to which individual channels can be connected, using a switch. The wire is normally fed into a combining or summing amplifier to allow the signal to be mixed with others.