Are you looking for a measurement microphone for your iPhone?

Some time ago, I was made aware of the i436 measurement microphone from MicW. It looked like exactly what was needed to turn any iOS device into a quality sound level meter, or acoustical analysis tool, that you could truly carry around in your pocket, but it was limited in its utility by that pesky low-end roll-off that plagued earlier versions of iOS.

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iPhone 5 audio consistent with iPhone 4S

Today, I had the opportunity to begin testing the audio input characteristics of the new iPhone 5. As seen in the plots, below, the headset input frequency response matches that of the iPhone 4S, which was presented in the previous post. The behavior of the built-in microphone also seems to match that of the iPhone 4S, suggesting that Apple kept the audio input path essentially unchanged in the new device.

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Stereo 1/3-octave analysis now available in SignalScope Pro

With the release of version 2.2, the Octave tool in SignalScope Pro for iOS can now analyze two input channels simultaneously. This new capability is only available on devices running iOS 5 or later, and it requires a stereo or two-channel dock connector audio accessory.       The Octave tool offers whole and 1/3-octave real-time spectral analysis with A, C, or flat frequency weighting and fast, slow, or impulse time weighting. Time exponential averaged level (Lp) and equivalent level (Leq) measurements are both supported. The Octave tool available via in-app purchase in SoundMeter 3.0 and SignalScope 3.2 also offers two-channel measurement capability on iOS 5 or later. SoundMeter 3.0, SignalScope 3.2 and SignalScope Pro 2.2 are all available for […]

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SignalScope 3.0 for iOS Goes Universal

Following in the footsteps of SignalScope Pro, SignalScope has now been enhanced for iPad users with native iPad support. SignalScope’s FFT analyzer and oscilloscope now support drawing on an external screen with a compatible video output adapter. The original iPad supports external screen resolutions up to 720p and the iPad 2 supports resolutions as high as 1080p and even 1920×1200 with compatible hardware. Video output support is not supported on iPhone or iPod touch. SignalScope can be upgraded, via in-app purchase, to the full functionality of SignalScope Pro. Alternatively, additional tool upgrades, such as the octave-band spectrum analyzer or signal generator, may be purchased individually. Like the Pro version, SignalScope now supports PDF file creation, in-app file previews, iTunes File Sharing, […]

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