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  2. Measurement microphone calibration - Wikipedia

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

    A pistonphone is an acoustical calibrator (sound source) that uses a closed coupling volume to generate a precise sound pressure for the calibration of measurement microphones. The principle relies on a piston mechanically driven to move at a specified cyclic rate, pushing on a fixed volume of air to which the microphone under test is coupled.

  3. NTi Audio - Wikipedia

    en.wikipedia.org/wiki/NTi_Audio

    NTi Audio AG is a manufacturer of test and measurement instruments for acoustics, audio and vibration applications. With headquarters in Schaan, Liechtenstein, the company specializes in end-of-line audio testing for manufacturing quality control purposes, [1] provides instruments for testing public address systems in safety-critical environments [2] and also produces handheld Audio Analyzers ...

  4. Sama (company) - Wikipedia

    en.wikipedia.org/wiki/Sama_(company)

    Samasource Impact Sourcing, Inc., also known as Samasource and Sama, is a training-data company, focusing on annotating data for artificial intelligence algorithms. [2] [3] [4] The company offers image, video, and sensor data annotation and validation for machine learning algorithms in industries including automotive, navigation, augmented reality, virtual reality, biotechnology, agriculture ...

  5. PC Kinyanjui Technical Training Institute - Wikipedia

    en.wikipedia.org/wiki/PC_Kinyanjui_Technical...

    The PC Kinyanjui Technical Training Institute is located on Kabiria Road in Riruta satellite Dagoretti South Constituency in the county of Nairobi.The school is about 400 m (1,300 ft) from Riruta satellite Police station, next to Orthodox College of Africa and approximately 8.2 km (5.1 mi) from Nairobi's Central Business District.

  6. Audio equipment testing - Wikipedia

    en.wikipedia.org/wiki/Audio_equipment_testing

    Those who test and evaluate equipment can be roughly divided into two groups: "Objectivists", who believe that all perceivable differences in audio equipment can be explained scientifically through measurement and double-blind listening tests; and the "Subjectivists", who believe that the human ear is capable of hearing details and differences ...

  7. Microphone - Wikipedia

    en.wikipedia.org/wiki/Microphone

    A microphone, colloquially called a mic (/ m aɪ k /), [1] or mike, [a] is a transducer that converts sound into an electrical signal. Microphones are used in many applications such as telephones , hearing aids , public address systems for concert halls and public events, motion picture production, live and recorded audio engineering , sound ...

  8. Audio system measurements - Wikipedia

    en.wikipedia.org/wiki/Audio_system_measurements

    Many audio components are tested for performance using objective and quantifiable measurements, e.g., THD, dynamic range and frequency response. Some take the view that objective measurements are useful and often relate well to subjective performance, i.e., the sound quality as experienced by the listener. [13]

  9. Nairobi Technical Training College - Wikipedia

    en.wikipedia.org/wiki/Nairobi_Technical_Training...

    Nairobi Technical Training Institute offers courses on full-time, part-time and evening basis. Courses are categorized into Certificate, Diploma and Higher Diploma. The institute courses covers a wide range of fields including mechanics and mechanical engineering, Electronics and electrical engineering , institutional management, business ...