Tag: top_post

SignalScope X 13.1 Adds Support for miniDSP EARS Pro

Hardware, News

Early this year, miniDSP released EARS Pro, a test fixture for headphones and earphones that, unlike the original EARS device, offers standard ear canal simulators (IEC 60318-4) and stereo output channels with a headphone amplifier (when purchased with the optional USB 2×2 audio interface). This makes the EARS Pro a much better device for performing dual-FFT-based frequency response measurements of both headphones and earphones. SignalScope X 13.1 adds specialized support for the EARS Pro test fixture’s USB audio interface and makes it so easy to get up and running with compensated frequency response measurements. When the interface is connected to your device, SignalScope will automatically read the serial number from its unique hardware identifier and download factory-supplied microphone sensitivity and […]

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Measured: iPhone 17 Pro microphone frequency response and directivity

Hardware, iOS, iPhone, News

Frequency Response I measured the frequency response of the iPhone 17 Pro microphone by positioning a lab-grade reference microphone (PCB model 378B02) approximately 1mm away from the phone (facing the mic) in our anechoic chamber. The reference mic was connected directly to input 1 of a model 485B39 dual channel USB interface. The iPhone microphone signal was routed directly to a USB-C to 3.5mm headphone adapter using SignalScope’s audio play through function (with measurement mode enabled) and from there to input 2 of the 485B39. The response between the 2 microphones was measured with SignalScope’s Dual FFT Analyzer (on a Mac) with the microphones facing toward and away from a loudspeaker which was generating a swept sine excitation signal. The […]

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Measured: iPhone 16 Pro microphone frequency response and directivity

Hardware, iPhone

Frequency Response In order to measure the frequency response of the iPhone 16 Pro’s microphone, a lab-grade reference microphone (PCB model 378B02 1/2-inch pre-polarized free-field condenser microphone) was positioned facing the iPhone mic approximately 1mm away from the phone within our anechoic chamber. The speaker was behind the PCB mic, facing the iPhone. Both microphone signals were fed into a 485B39 USB stereo ICP signal conditioner and the response of the iPhone relative to the reference mic was measured using SignalScope’s Dual FFT Analyzer. Then, the iPhone and PCB mic were rotated 180 degrees, keeping the same orientation and position relative to each other, and the response was measured again. The 2 resulting frequency response measurements were averaged. Each averaged […]

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Which measurement microphone should I use with iPhone, iPad, or Mac?

Hardware, iOS, iPad, iPhone, iPhone Tutorials, Mac, Mac Tutorials

“Which mic do you recommend?” The short answer is that you can connect just about any kind of microphone you want to your iPhone, iPad, or Mac through a suitable USB audio interface. The means that choosing a mic must be done with your own specific needs in mind. The suggestions below offer an answer to this question which addresses various needs and budgets.

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How do I calibrate my microphone with SignalScope or SoundMeter?

Hardware, iPhone Tutorials, Mac Tutorials

If you would like to make accurate sound level measurements with your iPhone, iPad, or Mac, then proper calibration of your microphone sensitivity is an important step to success. With the right equipment, calibrating a microphone can be a very simple process.

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SoundMeter X adds support for miniDSP UMIK-2

Hardware, iOS, News

The UMIK-2 connects to an iPhone or iPad via USB with Apple’s Lightning to USB 3 camera adapter. When it is connected, SoundMeter X will recognize it and prompt you to enter the serial number which is printed on the UMIK’s label. Once the serial number has been entered, SoundMeter X will download the factory-supplied sensitivity information from the web and apply it immediately for factory-calibrated sound level measurements.

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