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An idealized and extreme smiley face curve shown using a 29-band graphic equalizer. A smiley face curve or mid scoop [1] in audio signal processing is a target frequency response curve characterized by boosted low and high frequencies coupled with reduced midrange frequency power.
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.
Equalizer: An equalizer is a set of linear filters that strengthen (boost) or weaken (cut) specific frequency regions. While basic home stereos often have equalizers for two bands, to adjust bass and treble, professional graphic equalizers offer much more targeted control over the audio frequency spectrum. [71]
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. It is caused by the use of ports to create ...
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.
In November 2023, Spotify expanded free access to 200,000 audiobooks for Spotify Premium subscribers. [223] In April 2024, Spotify expanded access to the audiobooks from the US, UK and Australia to include Canada, Ireland and New Zealand. The company also announced an expansion of its book catalogue to 250,000 books. [224] [205]
This bass comes in Silverburst color with pearloid block inlays, Precision/Jazz pickups, volume control, and an active 3-band equalizer. [5] The Fender has a matching headstock and a Mastodon logo on the neckplate. It also features an active/passive switch, bass boost/cut, and treble boost/cut.