Affordable Measuring Microphones Shootout – Part-3

This page is the follow up of Part-2, here you will find the outcome of my measurements, pros and cons about the 1/4″ Class 2 electret capsule measuring microphone shootout.

Neutrik 3382 vs iSEMic 725TR
Neutrik 3382 vs iSEMic 725TR

Results and findings; after measuring the three microphones the first what struck me was the recorded SPL deviation between the MicW i436 and the other two microphones (the reference – Neutrik 3382, and the other measured microphone – iSEMic 725TR).
All SPL levels below 85 dB the MicW i436 measured 0.5d dB to 0,6 dB of  scale (comparing to the two other microphones).
At levels above the 85dB the differences gradually did lessen to zero around 94 dB (where it was calibrated).

Continue reading Affordable Measuring Microphones Shootout – Part-3

Affordable Measuring Microphones Shootout – Part-2

Below the results of the three 1/4″ Class 2 measurement microphones shootout mentioned earlier in Part-1.

A Neutrik (NTI) 3382 was used as reference.

Measurement Microphones tested:

Continue reading Affordable Measuring Microphones Shootout – Part-2

Equalizer APO

A few months ago I ran into a Windows program called Equalizer APO (beta)  while I was searching on the Internet for a Windows counterpart of the OS X based program Audio Hijack 3.

Equalizer APO is a parametric / graphic equalizer for Windows. It is implemented as an Audio Processing Object (APO) for the system effect infrastructure introduced with Windows Vista.
(APIs like ASIO or WASAPI exclusive mode can not be used)

Continue reading Equalizer APO

Dynamic Range Meter

A couple of months ago I’ve found a very interesting website which fights against the loudness war; Dynamic Range Database.

dr-meter-windowsThe Dynamic Range Database uses a sliding scale from 1 to 20 (1 being the worst, 20 being the best) to rank the dynamic quality of each of the recordings they list. This number represents the difference between the peak decibel level on a recording and the recording’s average loudness.

Dynamic Range Database applies the following descriptors to these ranges:
1-7=bad; 8-13=transition; and 14-20=good.

Evaluation for each album on the website includes the album’s average dynamic range, the track with the weakest dynamic range, and the track with the greatest. The Dynamic Range Database also provides individual dynamic range measurements for each track on the album. Below on this page you find three free downloads to test your own collection of CDs, DVDs, LPs or your music files. You can also share and add your results to the Dynamic Range Database by simply fill in the form and upload your data. Continue reading Dynamic Range Meter

Affordable Measuring Microphones Shootout – Part-1

Like me most of the audio enthusiasts are interested in measuring their own loudspeakers and/or room. A professional Class 1 measuring microphone could cost € 1000,- or more. Most people have not that much money to spend so what are decent and affordable Class 2 measuring microphones?

I’ve found and tested several 1/4″ Class 2 measuring microphones in the € 20,- to € 200,- range. They have all in common that they can be used with a mobile device (like; iPhone, iPad, Android or Windows mobile phone/tablet), but also with a notebook or PC.

For the tests I’ve used an old Neutrik (NTI) 3382 measuring microphone (with frequency correction files) as reference. The measurements were taken in my living room using a pair of bi-amped Philips VN3100-25 (OEM Stage Accompany Blue Box, SA4525). The distance between the measuring microphones and loudspeaker was set at 0.5 meter and 1 meter distances.

Continue reading Affordable Measuring Microphones Shootout – Part-1