30.767 Allicdata Electronics
Allicdata Part #:

30.767-ND

Manufacturer Part#:

30.767

Price: $ 3.16
Product Category:

Uncategorized

Manufacturer: Altech Corporation
Short Description: PCB TERM TOP 17P 5MM 15A GRY
More Detail: N/A
DataSheet: 30.767 datasheet30.767 Datasheet/PDF
Quantity: 1000
50 +: $ 2.87091
Stock 1000Can Ship Immediately
$ 3.16
Specifications
Series: *
Part Status: Active
Description

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30.767 is an acoustics frequency understanding by the National Institute of Standards and Technology (NIST). It is the frequency for which sound pressure is equal to 0.0004 microbar. It serves as the linear reference level for acoustic measurements and is used to calibrate precision acoustic microphones in anechoic chambers. It is especially relevant in industrial and medical applications such as telephony, hearing aid calibration, auto acoustics, and speech recognition.

The 30.767 application field can be divided into two categories. Firstly, it is used to calibrate precision acoustic microphones. This is a two-step process where firstly the engineers perform linear measurements at 30.767 levels of sound pressure, and then secondly adjust the microphone to achieve precise accuracy of the readings. Secondly, it is used to calibrate hearing aids. Group testing is performed in anechoic chambers with a device that emits 40 dB of sound pressure at 30.767 frequency.

The working principle behind 30.767 is the fact that the sound pressure at this frequency creates a sound field that is uniform throughout the chamber. This uniform sound field allows precise measurements of sound pressure levels to be taken without interference or alteration from external noise. The sound field is further calibrated to ensure that precise accuracy of sound pressure readings are obtained. Once calibrated, the acoustic microphones can then be used to accurately measure and compare sound pressure levels throughout the chamber.

In addition, sound pressure levels are not only measured using 30.767, the same frequency is also used to adjust speech recognition technology. This enables the speech recognition algorithms to be tuned to correctly detect various sounds, such as syllables, words, and phrases. The tuning process is conducted in a calibration chamber, where the speakers are calibrated to emit 40 dB of sound pressure at 30.767.

In conclusion, 30.767 is an acoustics frequency used to calibrate precision acoustic microphones in anechoic chambers. It is used to accurately measure and compare sound pressure levels in an environment where external noise interference is eliminated. It is also used to adjust speech recognition technology, enabling the algorithms to be tuned to correctly detect various sounds. Through these applications, 30.767 has become an essential part of precision acoustic measurements and hearing aid calibration.

The specific data is subject to PDF, and the above content is for reference

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