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Many cars which have a graphic equalizer have been observed to have it set as a smiley face curve which emphasizes low and high frequencies. [8] Graphic equalizer use leading to speaker damage is common — large amounts of bass boost and treble boost can distort music and damage loudspeaker drivers. [ 9 ]
For example, in Europe, for many years recordings required playback with a bass turnover setting of 250 to 300 Hz and a treble rolloff at 10,000 Hz ranging from 0 to −5 dB, or more. In the United States, practices varied and a tendency arose to use higher bass turnover frequencies, such as 500 Hz, as well as a greater treble rolloff such as ...
The number of frequency channels may be matched to the requirements of the intended application. A car audio equalizer might have a total of five to ten frequency bands. An equalizer for professional live sound reinforcement typically has some 25 to 31 bands, for more precise control of feedback problems and equalization of room modes.
Dynamic equalization involves variation of the equalizer characteristics in the time domain as a function of the input. Due to the varying nature, noise is reduced compared to static equalizers. Harmonic synthesis involves the creation of higher order harmonics from the fundamental frequency signals present in the recording.
There is a limit to the flexibility of such controls, and they are sometimes insufficient. If the degree of mis-match between microphones is great, simply increasing presence is not enough, and instead a sound engineer will use a graphic equalizer, sometimes several, each connected to an individual sound channel. [3]
The proximity effect in audio is an increase in bass or low frequency response when a sound source is close to a directional or cardioid microphone. [ 1 ] [ 2 ] Proximity effect is a change in the frequency response of a directional pattern microphone that results in an emphasis on lower frequencies.
Spotify allows users to add local audio files for music not in its catalog into the user's library through Spotify's desktop application, and then allows users to synchronize those music files to Spotify's mobile apps or other computers over the same Wi-Fi network as the primary computer by creating a Spotify playlist, and adding those local ...
Some more expensive bass amps have a parametric equalizer, which enables precise control of tone. The first amplifier stage is a preamplifier. It amplifies the audio signal to a level that can drive the power stage. The preamplifier also changes the tone of the signal; high preamp settings add overdrive.