What does SignalScope X offer that our other apps don’t?

Now that SignalScope X has been announced as a successor to five of our other apps (SignalScope, SignalScope Pro, SignalSuite, IOScope, and RoomScope), it’s time to discuss what SignalScope X offers that the others don’t. Here is a list of some major features that are new to SignalScope X.

Independent operation of each tool

In SignalScope and SignalScope Pro, only a single analysis tool can be running at a time. Switching to another tool while analysis is running automatically stops the previous tool and starts the new one. In SignalScope X, each tool can be run independently of the others and multiple tools can be run at the same time. The tab bar shows which tools are running.

Optional background operation

The previous apps automatically stop what they’re doing when you return to the home screen. SignalScope X allows you to choose the same behavior or to keep measurements running in the background while performing tasks in other apps. SignalScope X also supports the latest iPad multitasking features, such as Split View.

Better file handling

SignalScope X supports loading compatible files from other apps. This means you can browse to an audio file or one of SignalScope X’s exported data files in another app, such as Files, and use the action button to bring up a menu which will allow you to copy the file to SignalScope X. You can also export files from SignalScope X to another app, such as Files, Numbers, or Dropbox, using a similar menu. SignalScope X supports audio files (.wav, .aif, .caf), it’s own data files (.txt, .csv, .mat), and frequency response data files (.frd).

Input channel selection

In the previous apps, input channel selection was performed for all tools in the Input Channels submenu of the I/O Configuration menu. SignalScope X offers a new user interface for independently selecting input channels in each tool that supports real-time input. This includes selecting up to 8 channels from a multi-channel device.

Output channel selection

The new input channel selection menu can also include output channels. For the stereo Signal Generator, this means you can select which two channels of a multi-output device you want to use for the left and right signals. It also means that analysis tools can select those same output channels for direct analysis of the Signal Generator’s output.

More responsive FFT analysis

It takes time to gather enough data to compute an FFT, so for longer FFT’s the spectrum
analyzer will typically update less frequently as it waits for data to be gathered for each FFT. Overlap processing allows the spectrum analyzer to be updated more frequently, which makes for a smoother response. In the FFT and Dual FFT Analyzer tools, the overlap percentage can be manually specified with one of the fixed values (50% overlap means the analyzer will be updated twice as often and 90% overlap will produce updates 10 times as often). When Overlap % is set to Max, SignalScope X will automatically compute an overlap percentage that optimizes the spectrum analyzer’s update rate for the selected sample rate and frequency resolution.

Dual plots in the Dual FFT Analyzer tool

The Dual FFT Analyzer in SignalScope X now displays any two of the available device/system measurements on the screen at the same time, in separate plots. For example, this means you can monitor frequency response magnitude and phase, or phase delay and coherence, at the same time. Phase delay is also a new measurement available in the Dual FFT Analyzer.

Enhanced Signal Generator tool

SignalScope, SignalScope Pro, IOScope, and RoomScope all had a built-in signal generator to produce excitation signals for different kinds of measurement and analysis tasks. However, SignalScope X’s stereo signal generator includes the full functionality of SignalSuite, which supports two independent periodic waveform generators with a user-defined phase relationship between them as well as user defined sequence lengths for pseudorandom noise sequences and frequency sweeps. The Dual FFT Analyzer also includes its own, dedicated periodic excitation signal generator to facilitate high-signal-to-noise-ratio measurements with little or no averaging.

 

New tools

The three new tools that have already been introduced for SignalScope X are the XY Plotter, multi-channel Data Recorder, and MultiTool. The MultiTool, in particular, greatly enhances the value of SignalScope X when used as a configurable host and project manager for the other tools.

Faber Acoustical Releases SignalScope X for iOS as a Free Download

Faber Acoustical’s SignalScope X brings powerful new tools for dynamic signal analysis and data acquisition to iOS and replaces all the functionality currently found in SignalScope Pro, SignalSuite, IOScope, and RoomScope with subscription-based tool sets. For the first time ever in an iOS app from Faber Acoustical, SignalScope X may be downloaded for free. The user can then start a 7-day free trial of the Pro Tool Set Subscription. Without a subscription, the user is free to continue to use SignalScope X’s multi-channel Oscilloscope tool. SignalScope X is available for download on the App Store, now.

The original SignalScope and SignalSuite for iPhone were available for download on the opening day of the iPhone App Store. Now, after nearly 10 years of iOS development, SignalScope X offers a clearer expression of Faber’s vision for the future of acoustics-related signal analysis, data acquisition, and measurement on mobile devices.

Screenshot of SignalScope X's MultiTool hosting 4 other tools on iPad Pro Screenshot of SignalScope X's MultiTool hosting 4 other tools on iPad Pro Screenshot of SignalScope X's MultiTool hosting 6 other tools on iPad Pro

The most powerful addition to SignalScope X is the new MultiTool. SignalScope X’s MultiTool acts as a project manager and host for the other tools in SignalScope X. On iPhone, up to 2 other tools (subtools) may be added to the MultiTool at one time. iPad models support up to 4 subtools, except for iPad Pro models with 10.5-inch or larger displays, which support up to 6. Besides the obvious benefit of being able to see and interact with multiple subtools, simultaneously, the MultiTool can save its current subtool configuration under a user-defined name. Any of the saved configurations can then be selected for immediate application in the MultiTool. This allows for different configurations to be saved for different projects or jobs. For example, one configuration might include an Oscope and FFT Analyzer and another might include an Octave Analyzer and a Data Recorder. On iPad, one configuration might include all 4. Even when using just a single subtool, the MultiTool allows multiple configurations of that tool (e.g. a unique configuration of the Dual FFT Analyzer for each of several different measurement types) to be saved and recalled at will.

SignalScope X’s new Data Recorder tool supports real-time continuous streaming of up to 8 channels to an audio file. Along with the audio file, SignalScope X can save an “info” file, which contains metadata including date, time, location (if enabled), input channel details, and sensitivity calibration information. This metadata will also be embedded within the audio file, itself.

The new real-time XY Plotter allows the user to immediately visualize time, frequency, and amplitude relationships between two signals, or even create visually appealing images such as Lissajous curves.

Other significant features new to SignalScope X include optional background operation, independent/simultaneous operation of all tools, and independent input/output channel selection in each tool. It is also now possible to directly analyze the output of the signal generator in any of the real-time analysis tools. SignalScope X also makes it much easier to move data files in and out of the app via Files (iCloud Drive), Dropbox, or other apps on a user’s device that can load or export compatible files.

SignalScope X offers in-app subscriptions for Basic, Advanced, and Pro tool sets that can automatically renew at monthly or annual intervals. Subscriptions give users access to updates, new features, and new tools within the subscribed tool set. Subscriptions also cover ongoing hardware support, such as periodically updated nominal microphone sensitivities for built-in microphones on Apple devices, updated nominal voltage sensitivities for select audio input devices, and automatic calibration for audio input devices that include built-in sensitivity information.

The Basic Tool Set includes the Oscope, FFT Analyzer, 2D Real-time Spectrogram, and XY Plotter tools.

The Advanced Tool Set includes the basic tools as well as the 3D Real-time Spectrogram, Octave Analyzer, Level Meter, Data Recorder, and Stereo Signal Generator tools.

The Pro Tool Set includes the basic and advanced tools, plus the Dual-channel System Analyzer (Dual FFT), Room Acoustics Analyzer, and MultiTool.

The existing SignalScope, SignalScope Pro, SignalSuite, IOScope, and RoomScope apps will receive maintenance updates and remain available for sale on the App Store for a limited time for the benefit of those who need access to their respective tools on iOS 8 and 9.

SignalScope X requires iOS 10 or 11 and is designed to take full advantage of the iPhone X’s 5.8” screen.

Links

SignalScope X Product Page

Press Release

SoundMeter 8.3 offers more powerful data logging

SoundMeter 8.3 and SoundMeter Pro 4.3 can now log sound levels at user-defined intervals for an arbitrarily long period of time. Each includes a new option to automatically export logged measurement data when the measurement duration is reached. If Auto Stop is disabled, SoundMeter will continue to save the current logged data to a new data file each time the duration is reached. This new Auto Save option has been added to both the Meter and Octave tools.

Data logs can be automatically saved to CSV, TXT, or MAT files.

MeterLogOptions Screen Shot 2016-02-24 at 11.08.26 AM

Also new in SoundMeter:

  • When logging, Leq, Lp_max, and peak sound levels can be reset each time they are logged. With this option, it is possible to log a short Leq of 0.1 seconds for up to 8 hours. With the new Auto Save feature, the logging can be extended indefinitely.
  • When logging Lx values in the Meter tool, the user-defined percentile value will be fixed at the time logging starts. It is still possible to view different user-defined percentile values in the live meter display while the fixed percentile values are being logged.
  • A bug has been fixed which could cause errors in the Octave data when logging was enabled.
  • The formatting of the HTTP file server pages has been improved.
  • Audio input management has been improved to avoid the potential for transient noise from the hardware when a new measurement is started.
  • SoundMeter Pro uses much less memory when exporting data logs to CSV and TXT files.
  • The Octave log surface plot uses much less memory when viewing large data sets.
  • Other cosmetic enhancements and stability improvements.

In SoundMeter, the new features will require the purchase of one or more upgrades, which are available via in-app purchase. They are included in SoundMeter Pro.

SoundMeter 8.3 and SoundMeter Pro 4.3 are now available for download on the App Store.

SignalScope and SignalScope Pro updated for iOS

SignalScope 7.2.1 and SignalScope Pro 6.2.1 for iOS are now available for download on the App Store. These maintenance releases include the following improvements:

  • When the minimum frequency (Fmin) in the FFT analyzer was set to a value larger than 0, autoscale did not behave correctly. This has been fixed.
  • High frequencies were sometimes displayed incorrectly in the FFT analyzer when Fmax was set to a value higher than half the sample rate and smoothing was turned off. This has been fixed.

(In the standard version of SignalScope, setting Fmin and Fmax requires the Data Acquisition Upgrade, available via in-app purchase.)

Download SignalScope Pro 6.2.1

Download SignalScope 7.2.1

 

Electroacoustics Toolbox updated to 3.8.3

Electroacoustic’s Toolbox 3.8.3 can now be downloaded from the Mac App Store and from FaberAcoustical.com.

New in version 3.8.3:

  • An issue with channel sensitivity adjustments in the Meter Bridge and Sound Level Meter tools has been addressed.
  • When loading Room Analyzer tools from a project file, if a permissions error occurs for an audio file being used for analysis, an Open dialog will be presented with the file in question selected. Once the file is then manually loaded via the dialog, the permissions will be properly set for the next time the project is loaded. This is an issue with sandboxed copies of Electroacoustics Toolbox downloaded from the Mac App Store.
  • The Room Analyzer tool’s plotting is more reliable when loading the tool from a project file on recent versions of Mac OS X.

SignalScope Pro for Mac has also been updated with the same improvement to the Meter Bridge and Level Meter tools.

 

Download Electroacoustics Toolbox 3.8.3 on the Mac App Store

Download SignalScope Pro 3.8.3 on the Mac App Store

 

Set arbitrary frequency limits in SignalScope Pro 6.2

The FFT-based spectrum analyzer in SignalScope Pro 6.2 allows arbitrary upper and lower frequency bounds (Fmax and Fmin) to be specified for the spectrum display. The cursor peak track function will operate only within the specified frequency bounds. The hardware sample rate may optionally be automatically adjusted to best match the specified value for Fmax.

FFT_Plot_Limits     FFT_Options

FFT_Plot_Limits_2

An example:

A typical minimum sample rate of iOS hardware is 8 kHz. If a frequency resolution of 1 Hz is used for the spectrum, and values of 10 and 400 are specified for Fmin and Fmax, respectively, the data between 10 and 400 Hz will be plotted and the plot will be scaled to extend only from 10 and 400 Hz. If the cursor peak track function is enabled, the cursor will find the frequency of the highest magnitude between 10 and 400 Hz.

If the option to automatically adjust the sample rate based on Fmax has been selected, the hardware sample rate (Fs) will automatically be reduced to the minimum rate required to acquire data up to 400 Hz. In the case of typical iOS or USB audio input hardware, this rate would be 8 kHz. Since FFT data would then include values between 0 and 4 kHz, an additional option allows either all data (0 to 4 kHz) or only data from 10 to 400 Hz to be exported when saving FFT data to a CSV, TXT, or MAT file. Note that the DC term may be omitted from exported data when FFT data is displayed on a logarithmic frequency scale.

Also new in SignalScope Pro 6.2:

  • When “cpm” is selected for units of frequency, exported data files will include frequencies specified in cpm.
  • The nominal microphone sensitivity is properly set on the new iPhones.
  • Other bug fixes/stability enhancements, including iOS 9 compatibility.

Similar improvements have been added to version 7.2 of SignalScope. Specifying values for Fmin and Fmax in SignalScope require the Data Acquisition Upgrade, which is available via in-app purchase.

Download SignalScope 7.2

Download SignalScope Pro 6.2

 

SoundMeter updated for iPhone 6S and iOS 9

SoundMeterProIcon76@2xSoundMeter 8.2 and SoundMeter Pro 4.2 are now available for download on the App Store. Each new version includes proper handling of the built-in microphone on iPhone 6S and iPhone 6S Plus devices and minor changes in iOS 9.

Unfortunately, the new iPhones do not support analog input gain selection for the built-in microphones as previous iPhone models did. The fixed input gain of the iPhone 6S/Plus matches the “Mid” input gain setting in the iPhone 5C, 5S, and 6 models. This means that the peak sound level that can be measured using the built-in microphone of the new iPhones is nominally 116.5 dB. Previous iPhones, on their lowest input gain setting, could measure nominal peak levels of 136 dB.Screen Shot 2015-10-20 at 2.56.19 PM

The SoundMeter apps now allow mixing audio with other apps. This means that it is possible to play music from the Music app while performing measurements with SoundMeter or SoundMeter Pro. It is also possible to mix the output of the signal generator with the audio output from another app.

Also new in each app, when using an iPhone or iPad that has multiple built-in microphones, the unique name of the selected microphone is displayed (e.g. “Bottom Microphone” or “Right Microphone”).

Download SoundMeter

Download SoundMeter Pro

 

SignalScope update supports audio mixing on iOS

SignalScopeIcon60@2x

 

SignalScope Pro 6.1 and SignalScope 7.1 have been released for sale on the App Store with some important enhancements, including the ability to mix audio output with other apps. Audio mixing means that it is possible to play music from the Music app while performing signal analysis with SignalScope or SignalScope Pro. It is also possible to mix the output of the signal generator* with the audio output from another app.

 

Screen Shot 2015-09-28 at 10.35.35 AM

The SignalScope apps include other important enhancements:

  • The FFT analyzer tool now supports frequency resolution as fine as 0.1 Hz for audio input signals.
  • When working with an iPhone or iPad that has multiple built-in microphones, the unique name of the selected microphone is displayed (e.g. “Bottom Microphone” or “Right
    Microphone”).
  • When analyzing two input channels in the Octave tool, both spectra are displayed in a single line plot.

SignalScopeProIcon60@2x

 

 

Download SignalScope Pro

Download SignalScope

 

 

* The signal generator tool is available via in-app purchase in the standard version of SignalScope.

Easy calibrated vibration measurements on Mac or iOS

digiducer_04_CE_mediumAlthough Faber Mac and iOS apps have offered excellent sound and vibration analysis tools from the start, the introduction of the Digiducer 333D01 USB Digital Accelerometer makes vibration measurement easier and more portable. When the 333D01 is connected to a Mac, iPhone, or iPad, it will be immediately recognized by our apps and ready for calibrated measurements.

For example, SignalScope Pro will recognize the connected 333D01 as an accelerometer and set the measurement units accordingly. SignalScope Pro will also automatically read calibration information from the 333D01 and establish the appropriate sensitivity so calibrated measurements can be made immediately. This works with both the Mac and iOS versions of SignalScope Pro.

Sensitivity_2_1024x1024

The 333D01 communicates with Mac OS or iOS via the standard USB Audio Class driver. Connecting to a Mac is as simple as plugging the 333D01’s cable into an available USB port. For iOS, Apple’s Lightning to USB Camera Adapter is required.* When connecting to iOS, no additional power source is required, which makes Faber apps and the 333D01 part of an ultraportable vibration measurement system.

digiducer-03

Auto-calibrated measurements with the 333D01 are supported in Electroacoustics Toolbox, SignalScope and SignalScope Pro for Mac, and in IOScopeSignalScope and SignalScope Pro for iOS.

 

Buy the 333D01 USB Digital Accelerometer

Download Electroacoustics Toolbox (Mac)

Download SignalScope Pro (Mac)

Download IOScope (iOS)

Download SignalScope Pro (iOS)

 

*Older iOS devices may require a 30-pin to USB adapter, such as the one available in Apple’s original iPad Camera Connection Kit.

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