Characterisation of sound pressure levels produced by crackers

Sharma, O. P.; Mohanan, V.; Singh, Manju

doi:10.1016/s0003-682x(99)00010-9

Cited by 12 publications

(8 citation statements)

References 2 publications

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“…Furthermore, the sound-to-noise ratio (SNR) between 1 and 8 kHz was found in a study [26] to be higher compared with measurements with dodecahedron speaker utilizing MLS and ESS signals. In an extensive work by Sharma et al [96], sound pressure levels were measured for many different categories of firecrackers (ground shots, aerial shots and garland type) in an anechoic chamber and in a test site. There are also many kinds of research that have been conducted regarding sound pressure levels of firecrackers [94,[96][97][98], related to the effect these levels have on hearing.…”

Section: Firecrackermentioning

confidence: 99%

“…In an extensive work by Sharma et al [96], sound pressure levels were measured for many different categories of firecrackers (ground shots, aerial shots and garland type) in an anechoic chamber and in a test site. There are also many kinds of research that have been conducted regarding sound pressure levels of firecrackers [94,[96][97][98], related to the effect these levels have on hearing. It should be noted that because firecrackers cause high-pressure levels, care must be taken for the selection of a suitable microphone in acoustic measurements as well as appropriate precautions for the risk of hearing loss.…”

Section: Firecrackermentioning

confidence: 99%

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Review of Acoustic Sources Alternatives to a Dodecahedron Speaker

Papadakis

Stavroulakis

2019

Applied Sciences

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An omnidirectional source is required in many acoustic measurements. Commonly a dodecahedron speaker is used but due to various factors (e.g., high cost, transportation difficulties) other acoustic sources are sometimes preferred. In this review, fifteen acoustic source alternatives to a dodecahedron speaker are presented while emphasis is placed on features such as omnidirectionality, repeatability, adequate sound pressure levels, even frequency response, accuracy in measurement of acoustic parameters and fulfillment of ISO 3382-1 source requirements. Some of the alternative acoustic sources have the appropriate features to provide usable results for acoustic measurements, some have acoustic characteristics better than a dodecahedron speaker (e.g., omnidirectionality in the high-frequency range), while some can potentially fulfill the ISO 3382-1 source requirements. Collected data from this review can be used in many areas (e.g., ISO measurements, head-related transfer functions measurements) for the appropriate selection of an acoustic source according to the expected use. Finally, suggestions for uses and future work are given aimed at achieving further advances in this field.

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Section: Firecrackermentioning

confidence: 99%

Section: Firecrackermentioning

confidence: 99%

Review of Acoustic Sources Alternatives to a Dodecahedron Speaker

Papadakis

Stavroulakis

2019

Applied Sciences

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“…Noise from garland type firecrackers (joined) has been reported to be from 146 to 156 dB(C) peak at four meters distance [8].…”

Section: T Ypic Al Fi Rec Rac K E R No Is E Levelsmentioning

confidence: 99%

Firecrackers Noise

Tandon

2003

Noise & Vibration Worldwide

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Fireworks are used all over the world to celebrate special occasions. Noise produced by firecrackers that are used to celebrate these occasions has been highlighted. This impulse type of noise can cause hearing damage. Noise measurements of firecrackers show that they produce high sound pressure peak levels. Typical firecracker impulse noise levels are given. Noise limits and measurement methods used for the fireworks in some countries are presented.

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“…For individual fire-cracker constituting the series, the limit may be reduced by 5log 10 (N ) dB, where N is number of crackers joined together. The cracker's noise of different brands of fire-crackers is tested every year at CSIR-National Physical Laboratory, India, so as to ascertain whether the noise criteria are met or not [11,12]. The measurements are done using Brüel & Kjaer (B&K) Precision Impulse Sound level meters with B&K 1/4 inch microphones traceable to the national standards of sound pressure realized at CSIR-National Physical Laboratory, India [13,14].…”

Section: Introductionmentioning

confidence: 99%

“…The measurements are done using Brüel & Kjaer (B&K) Precision Impulse Sound level meters with B&K 1/4 inch microphones traceable to the national standards of sound pressure realized at CSIR-National Physical Laboratory, India [13,14]. The sound level meters are located on tripods 1 m above the ground, parallel to the surface of the test site in a line and pointing to the firing position [11,12].…”

Section: Introductionmentioning

confidence: 99%

Impact of Diwali Celebrations on Environmental Noise Pollution in India

et al. 2017

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The paper describes the noise monitoring data acquired from the pilot project on the establishment of National Ambient Noise Monitoring Network across the seven major cities in India for continuous noise monitoring throughout the year. The annual average L day (06-22 hours) and L night (22-06 hours) values observed for the 70 locations in India under study are analyzed for the day of Diwali festival. The ambient noise levels are compared to the recommended ambient noise standards of India. The comparison of noise levels observed on the day of Diwali festival with respect to previous month average noise levels shows that 54 sites (77.1%) registered an increment in L day of 0-10 dB(A), while 47 sites (67.1%) registered an increment in L night of 0-10 dB(A). It is observed that 11 sites (15.7%) out of the 70 sites under consideration met the ambient noise standards. The work ascertains the noise scenario during the Diwali festival in India and can be thus helpful for devising suitable strategies for controlling noise pollution at the noisy sites in future.

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Characterisation of sound pressure levels produced by crackers

Cited by 12 publications

References 2 publications

Review of Acoustic Sources Alternatives to a Dodecahedron Speaker

Review of Acoustic Sources Alternatives to a Dodecahedron Speaker

Firecrackers Noise

Impact of Diwali Celebrations on Environmental Noise Pollution in India

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