SignalScope X13.1.6 - App Store

SignalScope X offers a range of powerful measurement and analysis tools to enhance your productivity in areas such as acoustics (sound and vibration), audio, electronics, and electroacoustics.

SignalScope X includes a free oscilloscope tool. SignalScope X makes additional tools available via 3 tiers of subscription-based tool sets to meet your basic, advanced, and professional needs. Each subscription works on your iPhone, iPad, and Mac.

Features:
- Analyze signals coming from the Mac or iOS device’s current audio input device.
- Assign engineering units to your input signals and calibrate external transducers for accurate measurements.
- Assign input channel units and sensitivities for individual USB Audio devices.
- Connect lab-grade microphones and sensors to your Mac, iPad, or iPhone with suitable interface hardware for precise measurements.
- SignalScope offers enhanced support for select hardware from Digiducer, The Modal Shop, and miniDSP.
- Nominal acoustic sensitivities included for iPhone and iPad built-in microphones, voltage sensitivities for headset input (including the standard Lightning-to-headset adapter).
- Manually switch between available audio input and output sources.
- Load microphone frequency response data (FRD) and apply frequency response correction (FRC) to FFT-based measurements.
- Manually adjust audio sample rates, even up to 768 kHz, depending on hardware.
- Save acquired measurement data to CSV, TXT (tab-delimited), or MAT files.
- Save high-resolution analyzer display images to PDF files.
- Retrieve your data files from your device via Files (iCloud Drive), iTunes File Sharing, or through a web browser on another device. Files may also be opened in other compatible apps (e.g. Mail, Notes, Numbers, Dropbox, etc).

Basic Tools:
- Oscilloscope
- MultiTool - Powerful data monitoring and project management (Add 2-6 subtools, depending on screen size, and save configurations for easy recall at a later time.)
- FFT Analyzer - Spectrum analyzer with user-settable frequency limits and input triggering
- 2D Real-time Spectrogram Analyzer
- XY Plotter - Create Lissajous curves or visualize your stereo mix
- Stereo Signal Generator

Advanced Tools: (Advanced Tool Set also includes basic tools)
- 3D Real-time Spectrogram Analyzer - Stunning live visualization of incoming data
- Octave-band Analyzer - Whole and 1/3-octave RTA
- Level Meter - Overall signal level meter
- Max Levels - Traffic-light-style monitoring
- Noise Dosimeter
- Data Recorder - Stream up to 8 channels to WAV, AIF, or CAF audio files
- Multi-channel Audio File Player - Analyze pre-recorded data

Pro Tools: (Pro Tool Set subscription includes all tools)
- Dual-channel System Analyzer (Dual FFT analysis with support for Frequency Response Magnitude/Phase, Phase Delay, Group Delay, Coherence, Impulse Response and Cross-Correlation)
- Sound Intensity Analyzer - With a suitable p-p probe, measure sound intensity and acoustic particle velocity spectra (narrowband and whole or 1/3-octave bands) and time waveforms.
- Room Acoustics Analyzer (T20, T30, T60, nonlinearity, EDT, Early Decay Time, Center Time, Clarity, and Definition in various frequency bands, adjustable Schroeder integration limits)
- Polar Plot - Generate beautiful high-resolution plots of polar data.
- STI/PA Analyzer - Direct STI and STIPA measurements

Additional Pro Features:
- User-defined custom metadata in saved audio and data files
- Data logging support in the Level Meter, Octave Analyzer, and Noise Dosimeter
- Percentile exceeded sound levels in the Level Meter and Octave Analyzer
- NC, RNC, and NR references curves, NC, SIL, and NR values in the Octave Analyzer
- Voltage decibel levels can be displayed in dBV or dBu

Subscription Terms:
- https://www.faberacoustical.com/apps/subscriptions/terms.html
Privacy Policy:
- https://www.faberacoustical.com/about/privacy.html
Terms and Conditions for FaberAcoustical.com:
- https://www.faberacoustical.com/about/terms.html

Version History - Fixed an issue in which the Sig Gen might not run at sample rates above 192 kHz.
- Fixed an issue in which the Data Recorder could crash when used within the MultiTool.
- Stability and minor cosmetic improvements. 13.1.6 5d ago - Stability and minor cosmetic improvements.
- Fixed a crashing bug related to saving analyzer data in the MultiTool. 13.1.5 Sep 25 - Fixed a bug that could prevent full license activation for upgrade licenses
- Minor cosmetic improvements 13.1.4 Sep 17 Updated for iOS/iPadOS 27 13.1.3 Sep 15 - Fixed a bug that prevented audio data export from the File Player tool. 13.1.1 Aug 19 - Support for miniDSP EARS Pro. Factory-supplied microphone sensitivity and frequency response data will automatically be downloaded and applied the first time the EARS Pro audio interface is recognized by SignalScope. The system is then ready to make headphone and earphone measurements. Automatic setup for the EARS Pro analog jig requires that it be used along with the optional EARS Pro 2x2 USB audio interface. Sensitivity calibration and mic frequency response correction can be applied manually when using the jig with an alternate USB audio interface.
- Corrected a potential glitch in Octave Analyzer measurements with Z weighting and data logging enabled.
- Corrected a glitch in x-axis values for the data cursor in the lower graph of the Dual FFT Analyzer tool.
- Minor cosmetic improvements and simple user experience enhancements. 13.1 Aug 14 - Corrected a potential crash with Shortcuts
- Corrected potential crashes when the audio input changes during live analysis 13.0.2 Jun 26 - This update corrects an issue that could lead to missing data points in Octave data log exports. It also corrects an issue with continuous multi-channel recording to multiple audio files in the Data Recorder tool.
- More under-the-hood improvements have been made to improve the robustness of the software going forward.
- Minor cosmetic improvements. 13.0.1 Jun 8 - Perpetual licenses for each of the Basic, Advanced, and Pro Tool Set tiers are now available within SignalScope X via in-app purchase. The in-app store has been re-designed to offer both subscriptions and perpetual licenses using the latest UI and StoreKit frameworks from Apple.
- New STI/PA tool for measuring speech intelligibility with the Speech Transmission Index (as well as the Speech Transmission Index for public address systems). The STI/PA tool can perform direct Full (Fast) STI as well as direct STIPA measurements. It was developed according to IEC standard 60268-16, Edition 5.0 (2020-09). Pro Tool Set license required.
- New Pro Feature: The Signal Generator tool now offers a STI/STIPA signal generator.
- New Pro Feature: The Octave Analyzer supports a 1/9-octave spectrum, in addition to whole and 1/3-octaves.
- New Pro Feature: The Octave Analyzer allows the filter slope for all fractional-octave-band filters to be manually selected between O3, O5, and O7. The traditional O3 slope is 18 dB per octave rolloff. O5 is 30 dB/octave and O7 is 42 dB/octave.
- New Pro Feature: The Octave Analyzer allows the output of any of the fractional-octave-band filters to be routed to an available output channel.
- The MultiTool is now available with Basic and Advanced Tool Set licenses.
- SignalScope X’s user interface has been updated to support the new liquid glass appearance on iOS and iPadOS 26.
- Faber Account access has been added to SignalScope X to check eligibility for special discounts on in-app purchases and to manage cross-platform licenses. Creating or signing in to a Faber Account is optional.
- The tab view has been removed from SignalScope X on iPhone and iPad and replaced with a tool sidebar menu. Now, to switch tools, tap on the toolbox icon in the top toolbar to open the tool menu and then tap on the name of the desired tool. On iPad, the tool menu can be kept visible or hidden, as desired. 13.0 May 11 A bug that could potentially cause a crash when using the Soft Output Gain feature has been corrected. 12.7.3 11/19/2025 - The IO Device Configuration menu features some changes related to audio sample rates. We have found that in recent versions of iOS, the sample rate will almost always stay set to 48 kHz when the audio input and output routes do not belong to a single audio hardware device. So, when you want to run data analysis or acquisition at higher or lower sample rates for a dedicated input device, like a USB microphone or accelerometer, this iOS behavior makes that impossible. To address this issue, SignalScope now allows you to disable audio output so you can operate your input device at the desired sample rate. With audio output disabled, virtual output channels are still available for analyzing signals from the Signal Generator or File Player tools.
- In addition to the option to operate input devices at different sample rates, SignalScope now presents a list of supported sample rates for select hardware devices instead of a text field for manual entry of the desired sample rate. So, if you’re performing vibration measurements with e.g. a Digiducer USB accelerometer, you can select from a list of known supported sample rates (between 8 and 48 kHz) instead of using trial and error to manually find a supported sample rate that more closely matches your analysis needs.
- An option to disable audio output mixing with other apps has also been added. In earlier versions of SignalScope, output mixing was always enabled. This option doesn’t have any effect when audio output is disabled.
- Fixed an issue in which the sample rate of the Signal Generator tool might not be immediately updated if the sample rate changed while the tool was running.
- Fixed an issue that would sometimes stop the Signal Generator tool if the sample rate changed while the tool was running.
- Addressed some cosmetic issues. 12.7 07/22/2025 - The IO Device Configuration menu now includes a Soft Gain option in the output options section. The software gain is a digital scale factor applied to all output signals just before they are sent to the hardware. The intent of this is to support listening to low level signals (play-through or internally-generated) in potentially noisy environments.
- Re-loading data files at launch for averaged data in the Octave, FFT, and Dual FFT analyzer tools has been made more robust.
- Fixed some cosmetic issues. 12.6 10/30/2024 - More general improvements, including more informative alerts in certain cases when loading a data file fails.
- Fixed a potential crash in the Dual FFT Analyzer and another that sometimes occurred when Run In Background was switched off. 12.5.1 07/31/2024 - Improved handling of data and audio files. On newer versions of iOS, external files (e.g. on iCloud Drive) can be opened in-place instead of being copied into the app sandbox before opening.
- Significant improvements have been made 'under the hood' to ensure that the app runs well on the newest operating systems.
- Another normalization option has been added to the Polar plot. Polar data can now be normalized with respect to the maximum value, rather than the value at 0 degrees.
- Other minor cosmetic and stability improvements.
- Several improvements have been made for when SignalScope is run on Apple Vision Pro:
- The local IP address is updated correctly for sharing data files from SignalScope through a standard web browser (using SignalScope's built-in http file server).
- Nominal Vision Pro microphone sensitivity has been added.
- Zoom, pan, and swipe gestures now work much better. 12.5 07/10/2024 This update fixes a bug in the limit to how many subtools can be added to the MultiTool on iPhone. 12.4.2 06/11/2024 The Polar Plot level scale now properly updates the values per division according to the selected number of divisions in the Display Options menu. 12.4.1 06/11/2024 - The Polar Plot supports new display options, including data normalization at 0 degrees and the option to close the path (connect the last and first data points with a line). Data with angle values in descending order is now supported.
- Several cosmetic improvements have been made to the Polar Plot.
- Improvements to data file import.
- Octave Analyzer performance improved with high sample rates (e.g. 192 kHz), and auto-start triggering is more robust.
- Improved auto-calibration behavior in the File Player tool.
- Other cosmetic and minor improvements.
- Stability improvements. 12.4 06/05/2024 - Support added for Dayton iMM-6C measurement microphone, including automatic retrieval of calibration information after entering the product serial number.
- Corrected a misplaced cursor issue in the Octave Analyzer when displaying secondary levels as well as data loaded from a file.
- Fixed an issue that could prevent saving data to MAT files.
- Other stability improvements. 12.3 02/29/2024 - Support for a few basic Shortcuts (e.g Start, Stop, Save Data) to enable control of SignalScope via the Shortcuts app, Siri, or AppleScript. The Shortcuts feature requires at least iOS 16 or macOS 13. 12.2 01/05/2024 - The Spectrogram now supports user-selected min and max frequencies.
- The Spectrogram now supports graphing with time on the vertical axis (consistent with a typical LOFARgram).
- The Spectrogram includes an Auto Stop function for stopping after a user-defined period of time.
- When exporting Spectrogram data to a file, the magnitude data will be stored as decibel values when the dB scale is selected for magnitude values in the display settings.
- Support added for the latest Digiducer USB Digital Accelerometer models.
- Other cosmetic and minor improvements. 12.1 07/21/2023 - Help files now adjust to dark mode.
- The Recorder tool no longer reports a problem when audio file metadata is successfully saved in the file.
- Fixed a bug which hid the last physical input channel's gain controls on Mac.
- Other cosmetic and stability improvements. 12.0.12 06/08/2023 - Fixed a bug that would cause SignalScope to crash when exporting Octave log data to a text file (csv, txt). 12.0.11 03/22/2023 - Frequency weighting is now supported for non-acoustic signals in the Meter tool.
- Support for the miniDSP UMIK-2 and the Dayton UMM-6 USB measurement microphones has been improved.
- Minor refinements were made to the Room Analyzer's calculation of the starting point for Schroeder reverse integration in the calculation of the energy decay curve.
- Some potential crashing bugs were fixed.
- Various cosmetic improvements 12.0.10 03/18/2023 - The built-in web server has improved handling of data files that have non-ascii characters in their name.
- Reference curves in the Octave Analyzer tool are drawn correctly when changing upper and lower frequency limits of the graph.
- Corrected some cosmetic issues with data loaded from a file in the Octave Analyzer tool.
- Other cosmetic improvements 12.0.9 01/27/2023 - Corrected an issue which could prevent loading audio files with spaces in the name in the Room Analyzer tool.
- Corrected an issue in which the frequency labels were drawn misaligned in the Octave analyzer tool.
- Fixed multiple cosmetic issues on macOS 13 Ventura. 12.0.8 12/21/2022