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2. Digital room correction - Wikipedia

   en.wikipedia.org/wiki/Digital_room_correction

   Digital room correction may involve minimum phase algorithms, to maintain wavefront coherence over the intended frequency range. The use of analog filters, such as equalizers, to normalize the frequency response of a playback system has a long history; however, analog filters are very limited in their ability to correct the distortion found in many rooms.

3. Equalization (audio) - Wikipedia

   en.wikipedia.org/wiki/Equalization_(audio)

   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. Such an equalizer is called a 1/3-octave equalizer (spoken informally as "third-octave EQ") because the center frequencies of its filters are spaced one third of an octave apart ...

4. Smiley face curve - Wikipedia

   en.wikipedia.org/wiki/Smiley_face_curve

   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.

5. Room acoustics - Wikipedia

   en.wikipedia.org/wiki/Room_acoustics

   The recommended reverberation time is always a function of the volume of the room. Several authors give their recommendations [10] A good approximation for broadcasting studios and conference rooms is: TR[1 kHz] = [0.4 log (V+62)] – 0.38 seconds, with V=volume of the room in m 3. [11]

6. Struggling to hear TV dialogue? Try these simple fixes - AOL

   www.aol.com/news/struggling-hear-tv-dialogue-try...

   Most TVs feature a movie, music and standard mode for TV audio. You can find your TV's audio presets by navigating to the settings from your remote and selecting "sound." Read On The Fox News App

7. Audio filter - Wikipedia

   en.wikipedia.org/wiki/Audio_filter

   In some applications, such as in the design of graphic equalizers or CD players, the filters are designed according to a set of objective criteria such as passband, passband attenuation, stopband, and stopband attenuation, where the passbands are the frequency ranges for which audio is attenuated less than a specified maximum, and the stopbands are the frequency ranges for which the audio must ...

8. RIAA equalization - Wikipedia

   en.wikipedia.org/wiki/RIAA_equalization

   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 ...

9. Doctors Say This Type Of Noise Is Best For Deep Sleep - AOL

   www.aol.com/doctors-type-noise-best-deep...

   Smart White Noise Machine. With 10 volume settings and thousands of positive reviews, this white noise machine from SNOOZ is anything but a snoozefest—and it comes with an easy-to-use app for ...