SignalScope Pro for iOS devices is a real-time analysis toolset, suitable for use in areas such as acoustics, audio, electronics, and vibration. SignalScope Pro includes 4 tools for dynamic signal analysis, as well as a signal generator for producing test signals. See YouTube for video demos.

SignalScope Pro also turns your iOS device into a platform for data acquisition, storing acquired data in CSV or TXT files, MAT-files, or PDF or JPEG images for later retrieval from your device.

Input signals can be acquired from the current audio input path (iOS automatically selects the audio input path according to which external audio devices, if any, are connected to your device), or from the built-in accelerometer. Different engineering units, including Volts, Amps, pascals, g's, and ips (inches per second) can be assigned to input channels of the dock connector audio input or the headset input. Sensitivity calibration can also be performed for any audio input device or input channel.

“Touch” your data with highly interactive, multi-touch enabled analyzer displays.

For iOS device audio I/O compatibility and frequency response measurements, visit our blog.

Features
  • Analyze signals coming from the iOS device’s current audio input device or from the built-in accelerometer.
  • View real time analyzer displays on an external screen (supported on iPad only).
  • Audio input is typically sampled at 48 kHz or 44.1 kHz (higher and lower sample rates are possible, even up to 192 kHz, with hardware that supports it). Built-in accelerometer data is sampled at roughly 100 Hz.
  • Assign engineering units to your input signals and calibrate external transducers for accurate measurements.
  • Save acquired time or frequency data to CSV, tab-delimited ASCII text, or MAT files.
  • Retrieve your data files from your device via iTunes File Sharing, or through a web browser on your Mac or PC.
  • Save high-resolution analyzer display images to PDF files or to the iOS device's built-in photo album.
  • Pinpoint individual sample values or frequencies with a cursor.
  • Zoom in or out on spectrum and waveform displays with two-finger expand/pinch gestures, even while the analyzer is running (FFT analyzer and oscilloscope).
  • Pan vertically or horizontally in zoomed displays with two-finger scrolling (FFT analyzer and oscilloscope).
Tools
  • FFT Analyzer
    • Frequency resolutions between 0.5 Hz and 50 Hz may be specified for audio input (between 0.1 Hz and 10 Hz for the built-in accelerometer)
    • Input data can be windowed with one of 7 different data window types
    • Lin, log, and dB magnitude scales
    • Lin and log frequency scales
  • Octave and 1/3-octave Analyzer tool (RTA).
    • Whole and 1/3-octave RTA (based on digital Butterworth bandpass filters)
    • Fast, Slow, and Impulse response times
    • Flat, A, and C frequency weighting
    • Equivalent and time-weighted exponential average levels
    • Max, peak, and elapsed time also captured
  • Level Meter tool.
    • Flat, A, and C frequency weighting
    • Equivalent and time-weighted exponential average levels
    • Max, peak, and elapsed time also captured
  • Oscilloscope
    • Time scales from 0.1 to 500 ms per division
    • Auto, normal, and single-shot triggering
    • Trigger slope and threshold options
  • Stereo Signal Generator
    • Random and periodic pseudorandom noise (period defined by FFT length)
    • White and pink noise weighting
    • Lin and log frequency sweeps
    • Tone generator

The built-in and headset microphones are suitable for certain, basic sound level measurements, but high precision external microphones may also be used with appropriate audio accessory hardware. Even though default sensitivity values are included for the built-in and headset microphones, for best results, SignalScope should be calibrated before use. Sound levels may be off by a few dB when using the default microphone sensitivity.

For iPhone/iPad/iPod touch audio I/O compatibility and frequency response measurements, visit our blog.

iPhone Screenshots

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iPad Screenshots

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