IOScope is an impulse response analysis app for the iOS.

This app introduces two-channel transfer function. With IOScope you can measure loudspeaker frequency response, impedance, and sensitivity. You can measure a room impulse response. You can do large scale tuning for a large sound reinforcement system, or you can time-align a set of surround sound speakers, or simply optimize your home stereo.

With this app, you can determine the actual cutoff frequencies of your latest speaker crossover circuit, or teach your students the fundamentals of Fourier analysis of dynamic systems.

With the IOScope you can measure frequency response magnitude and phase, along with coherence and group delay. Time domain functions enable you to measure impulse response, ETC, and auto/cross-correlation. IOScope includes a built-in signal generator for producing suitable excitation signals to analyze your system or device under test (DUT). The reference signal can be taken from the internal signal generator or from an external source (when using an external reference, a stereo or multi-channel audio input device, connected to the dock connector, is required).

IOScope transforms your iOS device into a platform for data acquisition, where you can store acquired data in tab-delimited text files, MAT-files, or images for later retrieval from your device.

Changes in v1.2

• Impulse responses can now be exported to AIFF, CAF, or WAV audio files.
• Frequency and time domain data can now be exported to CSV files.
• The Excitation (signal generator) tab now supports the same color schemes as the analysis tools.
• Other cosmetic improvements have been made to the user interface.