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2. Ulterior Motives (song) - Wikipedia

   en.wikipedia.org/wiki/Ulterior_Motives_(song)

   Probably I was simply learning how to capture audio and this was a left over." [14] The song was thought to have been recorded in the 1980s due to its stylistic similarities to pop music of that time, specifically after 1983, since the LinnDrum drum machine and the Yamaha DX7 synthesiser were thought by the sleuths to have been used in the song.

3. Sound quality - Wikipedia

   en.wikipedia.org/wiki/Sound_quality

   Sound quality is typically an assessment of the accuracy, fidelity, or intelligibility of audio output from an electronic device. Quality can be measured objectively, such as when tools are used to gauge the accuracy with which the device reproduces an original sound; or it can be measured subjectively, such as when human listeners respond to ...

4. Codec listening test - Wikipedia

   en.wikipedia.org/wiki/Codec_listening_test

   Codec listening test. A codec listening test is a scientific study designed to compare two or more lossy audio codecs, usually with respect to perceived fidelity or compression efficiency. Most tests take the form of a double-blind comparison. Commonly used methods are known as "ABX" or "ABC/HR" or "MUSHRA". There are various software packages ...

5. Audio system measurements - Wikipedia

   en.wikipedia.org/wiki/Audio_system_measurements

   Audio system measurements are a means of quantifying system performance. These measurements are made for several purposes. Designers take measurements so that they can specify the performance of a piece of equipment. Maintenance engineers make them to ensure equipment is still working to specification, or to ensure that the cumulative defects ...

6. Infrasound - Wikipedia

   en.wikipedia.org/wiki/Infrasound

   Infrasound, sometimes referred to as low frequency sound, describes sound waves with a frequency below the lower limit of human audibility (generally 20 Hz, as defined by the ANSI/ASA S1.1-2013 standard). [1] Hearing becomes gradually less sensitive as frequency decreases, so for humans to perceive infrasound, the sound pressure must be ...

7. Noise pollution - Wikipedia

   en.wikipedia.org/wiki/Noise_pollution

   Noise pollution, or sound pollution, is the propagation of noise or sound with ranging impacts on the activity of human or animal life, most of which are harmful to a degree. The source of outdoor noise worldwide is mainly caused by machines, transport and propagation systems. [1] [2] [3] Poor urban planning may give rise to noise ...