Sound pressure level - message boards

what is the standard distance to measure sound pressure level away from equipment

Started 1 month, 3 weeks ago (2009-10-19 11:38:00) by eng_batool

Hi I need to know, what is the standard distance to measure sound pressure level away from equipment And what is the reference for such a topic

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what is the standard distance to measure sound pressure level away from equipment

Started 1 month, 3 weeks ago (2009-10-19 11:19:00) by eng_batool

Hi I need to know, what is the standard distance to measure sound pressure level away from equipment And what is the reference for such a topic

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Forum: منتدى الهندسة الميكانيكية

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RE: what is the standard distance to measure sound pressure level away from equipment

Started 1 month, 2 weeks ago (2009-10-25 21:44:00) by mehmetsa

please look to Engineers' Guide to Rotating Equipment mehmetsa

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RE: I know that the accepted mantra is that "live" sound is the standard. Frankly, I don't want to reproduce...

Started 2 months, 2 weeks ago (2009-09-22 12:22:00) by Larry I

I know that the accepted mantra is that "live" sound is the standard. Frankly, I don't want to reproduce the sound pressure level of a live rock concert and I would consider my system an utter failure if its sound quality was only that of a live rock show -- I expect much better than that. As for classical music, there really are no commercial recordings that exploit the full dynamic range of a...

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Forum: Hardware

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RE: Quote: Originally Posted by ckboon How's the noise from the unit & power supply? That tiny fan in the...

Started 2 months, 2 weeks ago (2009-09-21 17:13:00) by jahon2013

Quote: Originally Posted by ckboon How's the noise from the unit & power supply? That tiny fan in the PSU has to be quite loud. you could refer below information from http:// www.Thecus.com Sound Pressure Level Without HDD: 21.3 dB(A) With HDD: 23.9 dB (A) with 1.5TB Seagate * 4 HDD installed

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RE: Ultrasone HFI-780 S-Logic? Natural Surround Sound Plus Dynamic principle Frequency range 10-26.000 Hz Impedance 35 Ohm Sound pressure level...

Started 2 months, 2 weeks ago (2009-09-19 22:43:00) by momomo6789

Ultrasone HFI-780 S-Logic™ Natural Surround Sound Plus Dynamic principle Frequency range 10-26.000 Hz Impedance 35 Ohm Sound pressure level 96 dB MU Metal bufferboard, reduced field emissions in accordance with ULE (=Ultra Low Emission) standard Driver 40 mm gold-plated Weight 285 g (without cord) Straight cord (length ca 3m) 3,5/6,3 mm screwable gold-plated plug...

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Forum: Sound Cards & Audio products

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RE: SPL = Sound Pressure Level. How loud the sound is for a given reference input level. Under– Driven appears...

Started 2 months, 2 weeks ago (2009-09-19 19:14:00) by MikeCz

SPL = Sound Pressure Level. How loud the sound is for a given reference input level. Under– Driven appears to come from the misconception that if you use a speaker rated at 300watt RMS and you drive it with an amp that can only deliver 50 watts RMS you will destroy the speaker if you try to push more than 50 watts into the speaker. Apparently they think that you won’t notice the amplifier ...

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Re: Sound level / pressure meter.

Started 2 months, 1 week ago (2009-10-02 07:15:00) by William YZF-R1

I personally would spend the few extra £ and get the popular one. One of the main benefits is that because it is the popular choice comparisons/assessment are easier for others and there are correction tables available. 7-Range Analog Sound Level Meter: Amazon.co.uk: Electronics & Photo I personally bought the digital version for convenience and intentionally have only really scratched ...

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RE: How long was the car sitting still with the engine off before you checked the oil level? Is the...

Started 2 months, 2 weeks ago (2009-09-21 11:10:00) by I1ULUZ

How long was the car sitting still with the engine off before you checked the oil level? Is the sound about once a second or about 8 times a second? If it's the slow tick, it's NORMAL for the LNF. It's the high pressure fuel pump noise. If it's about 8 times a second, idle at 900rpm, cam runs 1/2 of the crank speed so 450 rpm divided by 60 seconds = 8 times a second for a valve...

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RE: Re : Sound Level Pressure with several channel

Started 3 months ago (2009-09-10 11:11:00) by MathieuSG

Hello Doug, thanks for your answer ! Your are right, if I put the weighting and sound level meter Vi out of the For loop, it works good. Thanks !! I 'll try to optimize the architecture by regarding your examples, thanks for the tips! Mathieu

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Forum: Dynamic Signal Acquisition

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