Please repost - PSI = Pascal (KPA) = SPL

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Topic: Please repost - PSI = Pascal (KPA) = SPL

Thanks in advance.

--------------------
"Keep it Loud and Make me Proud!"

Wayne Harris

Wayne Harris
Administrator
Member # 2

posted

Someone posted a conversion chart on these parameters a month or so ago. I thought it was interesting but I can't seem to find it. Can you please repost or refer me to this thread.

Thanks in advance.

--------------------
"Keep it Loud and Make me Proud!"

Wayne Harris

Posts: 5322 | From: Austin, TX | Registered: May 1999 | IP: Logged |

Josh Schmillen
Senior Member
Member # 856

posted

I believe it was Mike Hughes, I'm sure he will so this. I'm anxious to see what Wayne needs this for

*cough* new mic research *cough*

--------------------
Josh Schmillen
Art's Sound Chamber 3

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Posts: 2875 | From: Moberly, MO | Registered: Dec 1999 | IP: Logged |

quote:

Originally posted by Wayne Harris:
Someone posted a conversion chart on these parameters a month or so ago. I thought it was interesting but I can't seem to find it. Can you please repost or refer me to this thread.

Thanks in advance.

Also Wayne, thanks for fixing the WTB forum. You got a laptop for sale?

~Don~

--------------------
Don Armstrong
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Stemyluv69
Senior Member
Member # 5267

posted

quote:
Originally posted by Wayne Harris:
Someone posted a conversion chart on these parameters a month or so ago. I thought it was interesting but I can't seem to find it. Can you please repost or refer me to this thread.
Thanks in advance.

Also Wayne, thanks for fixing the WTB forum. You got a laptop for sale?

Posts: 1312 | From: West Linn Or US. | Registered: Jun 2001 | IP: Logged |

quote:

Thanks in advance.

SPL = 20 Log(p/p ref)
p = pressure in pascals
p ref = reference pressure in pascals = 2 x 10^-5 Pa (pascals)
to convert psi to pascals you need this:
Pa/psi (approximately)
so take your relative PSI value convert it to pascals and dump it back
into the above formula.
2 psi = 13638 Pa
SPL = 20 Log [13638/(2x10^-5)] = 176.7 dB acoustical
More dB SPL versus PSI dB acoustical - PSI
50.7 - 0.000001
56.7 - 0.000002
60.2 - 0.000003
62.7 - 0.000004
64.6 - 0.000005
66.2 - 0.000006
67.6 - 0.000007
68.7 - 0.000008
69.7 - 0.000009
70.7 - 0.00001
76.7 - 0.00002
80.2 - 0.00003
82.7 - 0.00004
84.6 - 0.00005
86.2 - 0.00006
87.6 - 0.00007
88.7 - 0.00008
89.7 - 0.00009
90.7 - 0.0001
96.7 - 0.0002
100.2 - 0.0003
102.7 - 0.0004
104.6 - 0.0005
106.2 - 0.0006
107.6 - 0.0007
108.7 - 0.0008
109.7 - 0.0009
110.7 - 0.001
116.7 - 0.002
120.2 - 0.003
122.7 - 0.004
124.6 - 0.005
126.2 - 0.006
127.6 - 0.007
128.7 - 0.008
129.7 - 0.009
130.7 - 0.01
136.7 - 0.02
140.2 - 0.03
142.7 - 0.04
144.6 - 0.05
146.2 - 0.06
147.6 - 0.07
148.7 - 0.08
149.7 - 0.09
150.7 - 0.1
156.7 - 0.2
160.2 - 0.3
162.7 - 0.4
164.6 - 0.5
166.2 - 0.6
167.6 - 0.7
168.7 - 0.8
169.7 - 0.9
170.7 - 1.0
171.5 - 1.1
172.2 - 1.2
172.9 - 1.3
173.6 - 1.4
174.2 - 1.5
174.7 - 1.6
175.3 - 1.7
175.8 - 1.8
176.2 - 1.9
176.7 - 2.0
180.2 - 3.0
182.7 - 4.0
184.6 - 5.0
186.2 - 6.0
187.6 - 7.0
188.7 - 8.0
189.7 - 9.0
190.7 - 10.0
191.5 - 11.0
192.2 - 12.0
192.9 - 13.0
193.6 - 14.0
194.2 - 15.0
194.7 - 16.0
195.3 - 17.0
195.8 - 18.0
196.2 - 19.0
196.7 - 20.0
197.1 - 21.0
197.5 - 22.0
197.9 - 23.0
198.3 - 24.0
198.6 - 25.0
199.0 - 26.0
199.3 - 27.0
199.6 - 28.0
199.9 - 29.0
200.2 - 30.0there ya go.....

--------------------
Michael Hughes ~ www.SPL2K.com

SPL2000
Senior Member
Member # 434

posted

quote:
Originally posted by Wayne Harris:
Someone posted a conversion chart on these parameters a month or so ago. I thought it was interesting but I can't seem to find it. Can you please repost or refer me to this thread.
Thanks in advance.

More dB SPL versus PSI dB

acoustical - PSI
50.7 - 0.000001
56.7 - 0.000002
60.2 - 0.000003
62.7 - 0.000004
64.6 - 0.000005
66.2 - 0.000006
67.6 - 0.000007
68.7 - 0.000008
69.7 - 0.000009
70.7 - 0.00001
76.7 - 0.00002
80.2 - 0.00003
82.7 - 0.00004
84.6 - 0.00005
86.2 - 0.00006
87.6 - 0.00007
88.7 - 0.00008
89.7 - 0.00009
90.7 - 0.0001
96.7 - 0.0002
100.2 - 0.0003
102.7 - 0.0004
104.6 - 0.0005
106.2 - 0.0006
107.6 - 0.0007
108.7 - 0.0008
109.7 - 0.0009
110.7 - 0.001
116.7 - 0.002
120.2 - 0.003
122.7 - 0.004
124.6 - 0.005
126.2 - 0.006
127.6 - 0.007
128.7 - 0.008
129.7 - 0.009
130.7 - 0.01
136.7 - 0.02
140.2 - 0.03
142.7 - 0.04
144.6 - 0.05
146.2 - 0.06
147.6 - 0.07
148.7 - 0.08
149.7 - 0.09
150.7 - 0.1
156.7 - 0.2
160.2 - 0.3
162.7 - 0.4
164.6 - 0.5
166.2 - 0.6
167.6 - 0.7
168.7 - 0.8
169.7 - 0.9
170.7 - 1.0
171.5 - 1.1
172.2 - 1.2
172.9 - 1.3
173.6 - 1.4
174.2 - 1.5
174.7 - 1.6
175.3 - 1.7
175.8 - 1.8
176.2 - 1.9
176.7 - 2.0
180.2 - 3.0
182.7 - 4.0
184.6 - 5.0
186.2 - 6.0
187.6 - 7.0
188.7 - 8.0
189.7 - 9.0
190.7 - 10.0
191.5 - 11.0
192.2 - 12.0
192.9 - 13.0
193.6 - 14.0
194.2 - 15.0
194.7 - 16.0
195.3 - 17.0
195.8 - 18.0
196.2 - 19.0
196.7 - 20.0
197.1 - 21.0
197.5 - 22.0
197.9 - 23.0
198.3 - 24.0
198.6 - 25.0
199.0 - 26.0
199.3 - 27.0
199.6 - 28.0
199.9 - 29.0
200.2 - 30.0

there ya go.....

--------------------
Michael Hughes ~ www.SPL2K.com

Posts: 7432 | From: Lake Havasu AZ | Registered: Aug 1999 | IP: Logged |

What are your references (books)?

--------------------
"Keep it Loud and Make me Proud!"

Wayne Harris

Wayne Harris
Administrator
Member # 2

posted

Thanks.

What are your references (books)?

--------------------
"Keep it Loud and Make me Proud!"

Wayne Harris

Posts: 5322 | From: Austin, TX | Registered: May 1999 | IP: Logged |

krik
New Member
Member # 5898

posted

Doesn't the diaphram need to move in two directions or am I mistaken.If it does than
how can psi effect a meter.

--------------------
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Posts: 47 | From: tampa,fla. | Registered: Aug 2001 | IP: Logged |

In other words, when the chart says 2 psi, I think that is 2 psi greater (or lower) than 14.7 psi for absolute values of 16.7 (or 12.7 psi).

--------------------
"Keep it Loud and Make me Proud!"

Wayne Harris

Wayne Harris
Administrator
Member # 2

posted

I assume the psi values in the chart are the one-way peak values referenced to standard atmospheric pressure of 14.7 psi.

Posts: 5322 | From: Austin, TX | Registered: May 1999 | IP: Logged |

quote:

Originally posted by SPL2000:

there ya go.....

Show off....

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Sid Grice
Senior Member
Member # 3684

posted

quote:
Originally posted by SPL2000:

there ya go.....

Show off....

--------------------

Posts: 6186 | From: S'port, Louisiana | Registered: Jan 2001 | IP: Logged |

quote:

Originally posted by Wayne Harris:
Thanks.

What are your references (books)?

I am not a smart as Mike (or as loud), but here is a adobe file that could be used as a reference. http://www.atconoise.com/mediaroom/NOISE_HANDBOOK.pdfNote: pages 14 & 15[ 12-18-2001: Message edited by: Sid Grice ]

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Sid Grice
Senior Member
Member # 3684

posted

quote:
Originally posted by Wayne Harris:
Thanks.
What are your references (books)?

I am not a smart as Mike (or as loud), but here is a adobe file that could be used as a reference.

http://www.atconoise.com/mediaroom/NOISE_HANDBOOK.pdf

Note: pages 14 & 15

[ 12-18-2001: Message edited by: Sid Grice ]

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Posts: 6186 | From: S'port, Louisiana | Registered: Jan 2001 | IP: Logged |

BTW, I really appreciate the quality of your work here at TP.

--------------------
"Keep it Loud and Make me Proud!"

Wayne Harris

Wayne Harris
Administrator
Member # 2

posted

Thanks Sid.

BTW, I really appreciate the quality of your work here at TP.

--------------------
"Keep it Loud and Make me Proud!"

Wayne Harris

Posts: 5322 | From: Austin, TX | Registered: May 1999 | IP: Logged |

quote:

Originally posted by Wayne Harris:
Thanks Sid.

BTW, I really appreciate the quality of your work here at TP.

It is my honor, Sir, to be given the opportunity to do so. Thank you.

--------------------

Sid Grice
Senior Member
Member # 3684

posted

quote:
Originally posted by Wayne Harris:
Thanks Sid.
BTW, I really appreciate the quality of your work here at TP.

It is my honor, Sir, to be given the opportunity to do so. Thank you.

--------------------

Posts: 6186 | From: S'port, Louisiana | Registered: Jan 2001 | IP: Logged |

quote:

Originally posted by Sid Grice:

It is my honor, Sir, to be given the opportunity to do so. Thank you.

Sid, you better wipe your nose man, you got some brown STUFF on there

Naw, j/k I agree with Wayne. You Rule!

--------------------
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Iggster
Senior Member
Member # 267

posted

quote:
Originally posted by Sid Grice:
It is my honor, Sir, to be given the opportunity to do so. Thank you.

Sid, you better wipe your nose man, you got some brown STUFF on there

Posts: 29843 | From: Tinley Park, Illinoize | Registered: Jul 1999 | IP: Logged |

quote:

Originally posted by Sid Grice:
It is my honor, Sir, to be given the opportunity to do so. Thank you.

Dude, can you kiss mine too?

Just kidding you do a great job! By the way, you can kiss my virtual ass here: http://www.keenechat.com/aaa/ass.html

Major Jam
Senior Member
Member # 5594

posted

quote:
Originally posted by Sid Grice:
It is my honor, Sir, to be given the opportunity to do so. Thank you.

Dude, can you kiss mine too? Just kidding you do a great job! By the way, you can kiss my virtual ass here: http://www.keenechat.com/aaa/ass.html

Posts: 760 | From: California | Registered: Jul 2001 | IP: Logged |

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