SignalScope on iPad?

The question frequently comes up, whether the existing Faber iPhone apps, SignalScope/Pro, SoundMeter, SignalSuite, etc will work on the iPad. The answer is, yes, they all work on the iPad. They aren’t universal apps, which means that they either appear in a small window in the middle of the iPad screen, or they can be zoomed to (mostly) fill the large screen. Even though the graphics are not as crisp when the apps are zoomed, these apps still offer a good user experience on the iPad.

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iPod Touch 3G Headset IO Frequency Response

To 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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Frequency Response Measurement of Logitec LIC-iREC03P

There haven been a few requests regarding a recently released line input device called the Logitec LIC-iREC03P. To add to the frequency response measurements done previously, we decided to add this new device to the group. This measurement was made using an iPod Touch 2G. As before, the audio was routed through the phone using SignalScope Pro, and the measurement includes the response of the iPod’s headphone output. When compared to the previous measurements,  the Logitec has the lowest 3dB point of all the devices tested (around 5 Hz). One problem with this device is the availability. Currently, it appears to only be available from Japan. I was able to order it fairly painlessly from geekstuff4you.com, but your mileage may […]

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Measuring Loudspeaker Impedance with IOScope

Today, a new video, Measuring Loudspeaker Impedance with IOScope, was published on this site, as well as on the Faber Acoustical YouTube channel. The video is both a demonstration of IOScope, as well as a simple tutorial on measuring loudspeaker impedance. Although the video is largely self-explanatory, I thought it would be beneficial to include some further explanation and tips for those who are interested. The movie is essentially broken into four chapters and a similar format will be followed here. What is impedance? How is it measured? By a generalized version of Ohm’s law, we understand that voltage is equal to the product of electrical current and impedance. This means that electrical impedance is equal to the ratio of […]

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