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.
» Read moreSince the Lightning to 30-pin adapter arrived yesterday, I have had the opportunity to test several audio accessories with the iPhone 5. The results are presented below.
» Read moreToday, 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.
» Read moreWhile the GuitarJack, from Sonoma Wire Works, was obviously designed with music recording in mind, it also works well as an I/O interface for test and measurement apps, like SignalScope Pro and IOScope.
» Read moreWhile built-in cameras and a microphone are exciting additions to the newest iPod touch, the same I/O limitations that plague the iPhone 4 as an audio/acoustics analyzer platform remain. In other words, the existing audio inputs on the 4th generation iPod touch suffer from significant low-frequency roll-off, just as the other iPhone and iPod touch models do. Also, existing analog line-level input accessories that worked with earlier iPod touch and iPhone devices (before the iPhone 4) are not compatible with the latest iPod touch. In spite of the present limitations, however, I’m sure it’s only a matter of time before suitable input options become available for the latest and greatest iOS devices…
» Read moreNow that I have my hands on the new iPhone, I thought I would go ahead and report on the state of audio I/O on the new device.
» Read more“Which devices work properly with the iPad?” In the table below, I list the devices I have tested with the iPad, along with some observations.
» Read moreThe goal, here, is to enumerate some of the current issues with USB audio on the iPad.
» Read moreIt turns out that in some ways, getting audio signals into the iPad is similar to getting audio signals into the iPhone 3GS, and in some ways it’s not.
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