MicW Audio i436 User Manual

MicW Audio A Division of BSWA Technology Ltd
Unit 1003 North Ring Center,18 Yumin Road,Beijing 10029 sales@mic-w.com
China www.mic-w.com
MicWi436FrequentAskedQuestions
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Question 1
I am looking into using the i436 product as part of a sound analyser solution as I understand it
achieves Class 2 status. If successful, this could result in a large number of your products being
purchased.
I understand that there is a 200Hz hi-pass filter at the input stage of the iPhone and iPad devices
which would limit the frequency range of such a system. Has this been corrected somehow within
the microphone circuitry? Otherwise it would seem that its designation as a Class 2 microphone for
such applications is misleading!
¾ Answer 1
The I436 is designed and manufactured according to our measurement technologies. The i436
meets the IEC 61672 Class 2 requirements when it inputs high end sound cards. But if it is
connected to iPhone or iPad, the accuracy is depended on the software. The i436 does not have the
correction for low frequency. The correction should be done on the software part.
In conclusion, i436 meets the Class 2 standard. But i436 with iPhone sound card and RTA software
will need some correction at low frequency to meet the Class 2. The customers need to know the
limitations.
¾ Question2 What is the minimum sound pressure level IPhone or iPad can measure?
¾
Answer 2 34 dB (A)
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Question 3 What is the maximum sound pressure level IPhone or iPad can measure?
¾
Answer 3 102 dB.
¾
Question 4 Does it work on Apple Laptops too
¾
Answer 4 Yes, It works
¾
Question 5 Where does that little peak in the frequency response (15kHz) come from?

MicW Audio i436 Specifications

General

Brand	MicW Audio
Model	i436
Category	Microphone
Language	English

Summary

MicW i436 Frequent Asked Questions

Question 1: i436 Class 2 Status and Low-Frequency Filtering

User inquires about the i436's Class 2 status and its low-frequency filter's impact on iPhone/iPad usage.

Question 2: Minimum Measurable Sound Pressure Level

Asks about the minimum sound pressure level measurable by iPhone or iPad.

Question 3: Maximum Measurable Sound Pressure Level

Inquires about the maximum sound pressure level measurable by iPhone or iPad.

Question 4: Apple Laptop Compatibility

Checks if the i436 microphone works with Apple laptops.

Question 5: 15kHz Frequency Response Peak

Asks for the origin of a specific peak at 15kHz in the frequency response.

Question 6: Android Phone Compatibility

Asks about compatibility with Android phones.

Question 7: High Sound Pressure Level Models

Inquires about options for higher SPL (150dB) requirements for specific users.

Question 8: iPhone Bit Depth and Sampling Rate

Asks about the bit depth and sampling rate of the iPhone for audio input.

Question 9: Inverted Frequency Response in App

Asks about integrating an inverted frequency response for low-cut in an app.

Question 10: Split Cable Connectors

Inquires about the type of connectors on the split cable for the i436 kit.

Question 11: iPhone vs. i436 Comparison Chart

Asks if a comparison chart between iPhone's integrated mic and i436 exists.

Question 12: Compatible Software and Pricing

Asks about software compatible with i436 and their price ranges.