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  2. Tone control circuit - Wikipedia

    en.wikipedia.org/wiki/Tone_control_circuit

    Tone control is a type of equalization used to make specific pitches or frequencies in an audio signal softer or louder. It allows a listener to adjust the tone of the sound produced by an audio system to their liking, for example to compensate for inadequate bass response of loudspeakers or earphones, tonal qualities of the room, or hearing impairment.

  3. Equalization (audio) - Wikipedia

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

    Equalization, or simply EQ, in sound recording and reproduction is the process of adjusting the volume of different frequency bands within an audio signal. The circuit or equipment used to achieve this is called an equalizer. [1] [2] Most hi-fi equipment uses relatively simple filters to make bass and treble adjustments. Graphic and parametric ...

  4. Audio time stretching and pitch scaling - Wikipedia

    en.wikipedia.org/wiki/Audio_time_stretching_and...

    The simplest way to change the duration or pitch of an audio recording is to change the playback speed. For a digital audio recording, this can be accomplished through sample rate conversion. When using this method, the frequencies in the recording are always scaled at the same ratio as the speed, transposing its perceived pitch up or down in ...

  5. The 7 best OTC hearing aids for seniors, according to ... - AOL

    www.aol.com/lifestyle/the-7-best-otc-hearing...

    Users adjust the volume manually or use an app to customize sound settings and frequency. However, some OTC options now offer remote programming and assistance from a hearing professional.

  6. Gifts for Musicians and Music Lovers This Holiday Season

    www.aol.com/entertainment/gifts-musicians-music...

    With the Meters OV-1-B-Connect, you can adjust the sound in your ears with a 5-band EQ, with active noise canceling (powered by a Qualcomm aptXTM HD audio chip) further enhancing your listening ...

  7. Balanced audio - Wikipedia

    en.wikipedia.org/wiki/Balanced_audio

    A small number of audio products have been designed with an entirely balanced signal path from input to output; the circuitry maintains its impedance balance throughout the device. This design is achieved by providing identical (mirrored) internal signal paths for both the "hot" and "cold" conductors.

  8. The Matrix Is Real And These 24 Tech Finds Are The Proof - AOL

    www.aol.com/okay-24-tech-finds-literally...

    Found it easy to pair to my AirPods and my Bose noise cancelling headphones. I fly to/from Europe from the US several times a year and appreciate that the charge lasts throughout the flight." - Spyke

  9. Head-related transfer function - Wikipedia

    en.wikipedia.org/wiki/Head-related_transfer_function

    HRTF filtering effect. A head-related transfer function (HRTF) is a response that characterizes how an ear receives a sound from a point in space. As sound strikes the listener, the size and shape of the head, ears, ear canal, density of the head, size and shape of nasal and oral cavities, all transform the sound and affect how it is perceived, boosting some frequencies and attenuating others.