1000Hz is used in acoustics as reference frequency for testing. What is special in it, why not 688.5Hz or 440Hz? - Quora
![A sound wave travels by a speed of 330 ms^-1 in air. If the wavelength of the wave is 110 cm , the frequency of the wave is . A sound wave travels by a speed of 330 ms^-1 in air. If the wavelength of the wave is 110 cm , the frequency of the wave is .](https://dwes9vv9u0550.cloudfront.net/images/6593633/398a30f6-02e9-42ea-ae6b-d4548c30dd32.jpg)
A sound wave travels by a speed of 330 ms^-1 in air. If the wavelength of the wave is 110 cm , the frequency of the wave is .
![Based on the graph, what is the threshold of hearing in decibels for frequencies of 60, 400, 1000, 4000, and 15,000 Hz? Note that many AC electrical appliances produce 60 Hz, music Based on the graph, what is the threshold of hearing in decibels for frequencies of 60, 400, 1000, 4000, and 15,000 Hz? Note that many AC electrical appliances produce 60 Hz, music](https://homework.study.com/cimages/multimages/16/image8753558196464517465.png)
Based on the graph, what is the threshold of hearing in decibels for frequencies of 60, 400, 1000, 4000, and 15,000 Hz? Note that many AC electrical appliances produce 60 Hz, music
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Italian Pai High Tone Single Horn (12V,400 Hz,105-118 dB @ 2m) With Relay : Amazon.in: Car & Motorbike
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