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  2. Active noise control - Wikipedia

    en.wikipedia.org/wiki/Active_noise_control

    Active noise control (ANC), also known as noise cancellation (NC), or active noise reduction (ANR), is a method for reducing unwanted sound by the addition of a second sound specifically designed to cancel the first. The concept was first developed in the late 1930s; later developmental work that began in the 1950s eventually resulted in ...

  3. Dynamic range compression - Wikipedia

    en.wikipedia.org/wiki/Dynamic_range_compression

    Dynamic range compression. This article is about a process that intentionally reduces the dynamic range of audio signals. For similar reductions caused by circuit imperfections, see Gain compression. For processes that reduce the size of digital audio files, see Audio compression (data). A rack of audio compressors in a recording studio.

  4. Audio editing software - Wikipedia

    en.wikipedia.org/wiki/Audio_editing_software

    Apply simple or advanced effects or filters, including amplification, normalization, limiting, panning, compression, expansion, flanging, reverb, audio noise reduction, and equalization to change the audio. Playback sound (often after being mixed) that can be sent to one or more outputs, such as speakers, additional processors, or a recording ...

  5. Noise reduction - Wikipedia

    en.wikipedia.org/wiki/Noise_reduction

    Noise reduction. Noise reduction is the process of removing noise from a signal. Noise reduction techniques exist for audio and images. Noise reduction algorithms may distort the signal to some degree. Noise rejection is the ability of a circuit to isolate an undesired signal component from the desired signal component, as with common-mode ...

  6. Audacity (audio editor) - Wikipedia

    en.wikipedia.org/wiki/Audacity_(audio_editor)

    It also has a large array of digital effects and plug-ins, [36] including: noise reduction based on sampling the noise to be minimized, [37] vocal reduction and isolation for creation of karaoke tracks and isolated vocal tracks, [38] pitch adjustment maintaining speed, and speed adjustment maintaining pitch. [39]

  7. Dolby noise-reduction system - Wikipedia

    en.wikipedia.org/wiki/Dolby_noise-reduction_system

    A Dolby noise-reduction system, or Dolby NR, is one of a series of noise reduction systems developed by Dolby Laboratories for use in analog audio tape recording. [1] The first was Dolby A, a professional broadband noise reduction system for recording studios that was first demonstrated in 1965, but the best-known is Dolby B (introduced in 1968), a sliding band system for the consumer market ...

  8. Downsampling (signal processing) - Wikipedia

    en.wikipedia.org/wiki/Downsampling_(signal...

    Downsampling (signal processing) In digital signal processing, downsampling, compression, and decimation are terms associated with the process of resampling in a multi-rate digital signal processing system. Both downsampling and decimation can be synonymous with compression, or they can describe an entire process of bandwidth reduction ...

  9. Generation loss - Wikipedia

    en.wikipedia.org/wiki/Generation_loss

    Generation loss was a major consideration in complex analog audio and video editing, where multi-layered edits were often created by making intermediate mixes which were then "bounced down" back onto tape. Careful planning was required to minimize generation loss, and the resulting noise and poor frequency response.

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