One of the most powerful tools in Electroacoustics Toolbox is the Dual FFT Analyzer, which is capable of measuring system transfer functions and even indicating the quality of the measurement.
» Read moreSome 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 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 moreThis exciting improvement to iOS 6 will significantly improve the quality of acoustical measurements that can be made by using the iPhone, iPad, or iPod touch without requiring a dock connector accessory for audio input.
» Read moreIOScope 2 can now export normalized impulse response data to AIF, CAF, or WAV audio files.
» Read moreIOScope 2 comes with a new, lower price and offers some of the same new features which were recently added to SignalScope, SignalScope Pro and SoundMeter for iOS.
» 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 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 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.
» Read moreTo add to the previously published results, we decided to measure the frequency response of the iPod Touch 3G. Electroacoustics Toolbox 2.1.7 was used with a MOTU UltraLite mk3 audio interface to measure the frequency response. These measurements include the response of the headset output as well as the headset input. The audio was routed through the iPod Touch using SignalScope Pro, and the measurements were made on a 3rd generation 32 GB iPod Touch. With each new iteration of the iPhone, the low-end roll off of the headset input has been steeper and steeper. The iPod Touch seems to be following a similar trend. The iPod Touch 2G had a 3 dB frequency around 30 Hz while the iPod […]
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