IPB

Welcome Guest ( Log In | Register )

 
Reply to this topicStart new topic
How to Choose a dB meter for open field applications, want to measure dB level or SPL in open field like forest
shyam.sunder91
post Dec 12 2013, 06:57
Post #1





Group: Members
Posts: 20
Joined: 30-September 13
Member No.: 110546



Hi,

i have question in how to choose a dB meter my specifications in nutshell

1/2 Capsule(Free Field) Microphone Capsule
A(must) ,C(optional) Freq.Weighting Type
30dB-130dB dB Range
0.1dB Resolution
30Hz-8KHz Frequency-Range
±4dB at 1KHz 94dB Accuracy
(Fast)<=200ms Response Time or Avg'g Time

Which dB meter would be perfect for measuring SPL in environment like forests here the sound level of human is measured not any animal

will my specifications match to my requirement ?

more over coming to cost :
To be frank i listened to a argument from vendor saying most of SPL are made in tiawan and other countries import them and apply their sticker on to it and sell it for high prices for example see extech SPL and same SPL from metravi which vary in cost at high level
Go to the top of the page
+Quote Post
hlloyge
post Dec 12 2013, 10:28
Post #2





Group: Members
Posts: 701
Joined: 10-January 06
From: Zagreb
Member No.: 27018



Only SPL I know is Sound Pressure Level, and you can't apply sticker to that.
Go to the top of the page
+Quote Post
shyam.sunder91
post Dec 13 2013, 11:17
Post #3





Group: Members
Posts: 20
Joined: 30-September 13
Member No.: 110546



QUOTE (hlloyge @ Dec 12 2013, 14:58) *
Only SPL I know is Sound Pressure Level, and you can't apply sticker to that.


sticker in the sence i meant to say ....
most of the european companies try to get the raw product from countries like taiwan and korea and make a little decorations to that release the product with good literature smile.gif

leave the sticker aside

give me some suggestions on SPL's

This post has been edited by shyam.sunder91: Dec 13 2013, 11:19
Go to the top of the page
+Quote Post
Alexandre123
post Dec 13 2013, 15:07
Post #4





Group: Members
Posts: 2
Joined: 8-December 13
Member No.: 113044



In deciding what PA gear to buy, the first step is to consider the type of music you play and the spaces that you play that music in. If you are an instrumental group playing in small environments—like your garage or small clubs—a minimal system may suffice. If you perform vocals, play in larger venues, or plan to tour, a more elaborate, powerful PA system will be required.
Go to the top of the page
+Quote Post
julf
post Dec 13 2013, 17:38
Post #5





Group: Members
Posts: 315
Joined: 14-January 12
Member No.: 96426



Is this thread a piece of surrealist art or what?
Go to the top of the page
+Quote Post
hlloyge
post Dec 13 2013, 18:43
Post #6





Group: Members
Posts: 701
Joined: 10-January 06
From: Zagreb
Member No.: 27018



I think OP wants to measure sound pressure levels, or loudness, in an environments like forrest, and asks for devices which can help him acomplish that task; but devices doesn't need to be from renomed manufacturers.
Go to the top of the page
+Quote Post
julf
post Dec 13 2013, 18:58
Post #7





Group: Members
Posts: 315
Joined: 14-January 12
Member No.: 96426



QUOTE (hlloyge @ Dec 13 2013, 18:43) *
I think OP wants to measure sound pressure levels, or loudness, in an environments like forrest, and asks for devices which can help him acomplish that task; but devices doesn't need to be from renomed manufacturers.


Right, that's what I assumed, too, and pretty much any normal SPL meter should be OK for that.
Go to the top of the page
+Quote Post
shyam.sunder91
post Dec 16 2013, 05:14
Post #8





Group: Members
Posts: 20
Joined: 30-September 13
Member No.: 110546



QUOTE (julf @ Dec 13 2013, 23:28) *
QUOTE (hlloyge @ Dec 13 2013, 18:43) *
I think OP wants to measure sound pressure levels, or loudness, in an environments like forrest, and asks for devices which can help him acomplish that task; but devices doesn't need to be from renomed manufacturers.


Right, that's what I assumed, too, and pretty much any normal SPL meter should be OK for that.


thats what i asked, will that be ok or whether i have to take care of any parameters ?

if that is ok then its ok smile.gif
Go to the top of the page
+Quote Post
Kees de Visser
post Dec 16 2013, 10:00
Post #9





Group: Members
Posts: 710
Joined: 22-May 05
From: France
Member No.: 22220



If you already have a smartphone, an app might be a good choice.
Built in microphone quality should be good enough for your requirements, but it's always possible to use an external microphone.
The prices look very attractive to me smile.gif
Go to the top of the page
+Quote Post
julf
post Dec 16 2013, 13:30
Post #10





Group: Members
Posts: 315
Joined: 14-January 12
Member No.: 96426



QUOTE (shyam.sunder91 @ Dec 16 2013, 05:14) *
if that is ok then its ok smile.gif


It's OK smile.gif
Go to the top of the page
+Quote Post
Arnold B. Kruege...
post Dec 16 2013, 13:50
Post #11





Group: Members
Posts: 4247
Joined: 29-October 08
From: USA, 48236
Member No.: 61311



QUOTE (shyam.sunder91 @ Dec 13 2013, 05:17) *
QUOTE (hlloyge @ Dec 12 2013, 14:58) *
Only SPL I know is Sound Pressure Level, and you can't apply sticker to that.


sticker in the sence i meant to say ....
most of the european companies try to get the raw product from countries like taiwan and korea and make a little decorations to that release the product with good literature smile.gif

leave the sticker aside

give me some suggestions on SPL's


To use a SPL meter in the woods a critical parameter is the lowest SPL that the device is accuate for. This varies a lot from device to device, but should be specified by the manufacturer.

The last SPL meter that I bought is an AZ corp 8928

http://www.az-instrument.com.tw/en/productsinfo/151.html

I bought it because it is inexpensive, but you can disable its automatic power off and it will hold peaks as long as it is turned on. Some cheap SPL meters won't do either or both.

It's specs are:

http://www.az-instrument.com.tw/upload/pro...94632-qmuut.pdf

A weight: 40dB~130dB
C weight: 45dB~130dB

Which are pretty good for a cheap SPL meter, some will only read down to 50 dB which is a tad high for use in the woods. I'd like to see you get a SPL meter that worked down to 30 dB SPL or better, but I think you will pay much more for that.
Go to the top of the page
+Quote Post

Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



RSS Lo-Fi Version Time is now: 23rd November 2014 - 02:12