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  2. ORTF stereo technique - Wikipedia

    en.wikipedia.org/wiki/ORTF_stereo_technique

    ORTF setup. The ORTF stereo technique, also known as side-other-side, is a microphone technique used to record stereo sound.It was devised around 1960 at the now-defunct Office de Radiodiffusion Télévision Française (ORTF).

  3. 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 ...

  4. Audio system measurements - Wikipedia

    en.wikipedia.org/wiki/Audio_system_measurements

    "Wow" is slow speed (a few Hz) variation, caused by longer-term drift of the drive motor speed, whereas "flutter" is faster speed (a few tens of Hz) variations, usually caused by mechanical defects such as out-of-roundness of the capstan of a tape transport mechanism. The measurement is given in % and a lower number is better.

  5. Microphone practice - Wikipedia

    en.wikipedia.org/wiki/Microphone_practice

    The equipment for the techniques also varies from the bulky to the small and convenient. A-B techniques generally use two separate microphone units, often mounted on a bar to define the separation. X-Y microphone capsules can be mounted in one unit, or even on the top of a handheld digital recorder.

  6. The Dickson Experimental Sound Film - Wikipedia

    en.wikipedia.org/wiki/The_Dickson_Experimental...

    The film features Dickson playing a violin into a recording horn for an off-camera wax cylinder. [3] The melody is from a barcarolle, "Song of the Cabin Boy", from Les Cloches de Corneville (literally The Bells of Corneville; presented in English-speaking countries as The Chimes of Normandy), a light opera composed by Robert Planquette in 1877. [4]

  7. Delayed auditory feedback - Wikipedia

    en.wikipedia.org/wiki/Delayed_Auditory_Feedback

    It can consist of a device that enables a user to speak into a microphone and then hear their voice in headphones a fraction of a second later. Some DAF devices are hardware; DAF computer software is also available. Most delays that produce a noticeable effect are between 50–200 milliseconds (ms).

  8. Latency (audio) - Wikipedia

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

    Latency refers to a short period of delay (usually measured in milliseconds) between when an audio signal enters a system, and when it emerges.Potential contributors to latency in an audio system include analog-to-digital conversion, buffering, digital signal processing, transmission time, digital-to-analog conversion, and the speed of sound in the transmission medium.

  9. Measurement microphone calibration - Wikipedia

    en.wikipedia.org/wiki/Measurement_microphone...

    Sound calibrators are used in an identical way to pistonphones, providing a known sound pressure field in a cavity to which a test microphone is coupled. Sound calibrators are different from pistonphones in that they work electronically and use a low-impedance (electrodynamic) source to yield a high degree of volume independent operation.