- Price$74.99
- CategoryProductivity
- Versions3 archived
- Installable3 of 3
- AvailabilityRemoved from the App Store
- SellerFaber Acoustical, LLC
- Bundle IDcom.faberacoustical.signalscopepro
RequirementsCompatible with iPhone, iPod touch, and iPad. Requires iOS 2.0 or later.
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Report an issueSignalScope Pro for iOS devices is a real-time signal analysis toolset, suitable for use in areas such as acoustics, audio, electronics, and vibration. SignalScope Pro includes tools for dynamic signal analysis, as well as a signal generator for producing test signals. See http://youtube.com/faberast for video demos.
For more information regarding compatible audio hardware, visit http://blog.FaberAcoustical.com.
Features: - Analyze signals coming from the iOS device’s current audio input device or from the built-in accelerometer. - Assign input channel units and sensitivities for individual USB Audio devices. Direct support is included for the Digiducer 333D01 accelerometer and miniDSP UMIK-1 measurement microphone. - Manually switch between available audio input and output sources. - Load microphone frequency response data (FRD) and apply frequency response correction (FRC) to FFT spectrum measurements. - 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 FFT and waveform displays with two-finger expand/pinch gestures, even while the analyzer is running. - Pan vertically or horizontally in zoomed displays with two-finger scrolling.
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 -- Auto, normal, and single-shot triggering -- Trigger slope and threshold options - Real-time Spectrogram Analyzer (available via in-app purchase in 2D and 3D versions) -- Frequency resolutions between 1 and 50 Hz may be specified for audio input (between 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 -- Fractional-octave band frequency smoothing in 1/6, 1/12, and 1/24-octave bands. -- Cursor peak track can track peaks in time, frequency, or both. -- Color scale bar graph enables manual adjustment of magnitude scale and offset. The color scale can also be hidden. -- Data may be exported to CVS, MAT, or TXT files for post processing or plotting. Optionally, include GPS location information with exported data. -- Optionally save a high-resolution PDF file of the spectrogram plot, or save an image to your Photos library. - Octave-band Analyzer -- 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 -- Equivalent and time-weighted exponential average levels -- Flat, A, and C frequency weighting -- Max, peak, and elapsed time also captured - Oscilloscope -- Time scales from 0.1 to 1.0 second 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
Ratings Over Time
sampled from 7 archived captures| Date | Version | Rating | Ratings | Price |
|---|---|---|---|---|
| May 10, 2010 | 1.2.2 | — | — | $74.99 |
| January 18, 2012 | — | — | 13 | $74.99 |
| May 27, 2016 | 6.3.1 | ★ 4.0 | 21 | $74.99 |
| December 13, 2016 | 6.4.3 | ★ 4.0 | 21 | $74.99 |
| January 1, 2017 | 6.4.4 | ★ 4.0 | 21 | $74.99 |
| December 11, 2017 | 6.4.5 | — | 22 | $74.99 |
From archived App Store listing data, captured by the Wayback Machine.
Archived Reviews
8 of 13With Faber’s move to the greed of a subscription model, I’ve come to the end of the road with them. I just can’t justify providing any tacit support to a model that I just don’t believe in. Faber has chosen this path. However, I too have choices. And as a casual, non-professional user of their product, I will choose other options when my version of Signal Scope meets its demise. It was nice while it lasted. Fare thee well Faber.
SignalScope Pro for iPhone includes the essential meters every sound tech and contractor needs for daily work. Input can come from the built in microphone, or an external mic. SignalScope Pro can also use the iPhone's built-in accelerometer to analyze vibrations. The FFT and Octave-band analyzers are easily configured, and by tapping the screen, you can easily see peak frequencies and harmonics. With the improved frequency response of iOS 6, the analyzers and sound level meter are now plenty accurate across the audible range. The default sensitivity of the SignalScope was within a dB or two of a calibrated sound level meter, which is plenty good for most situations. I have not had a chance to compare the spectrum displays to my standard rig, but it looks to be in the ballpark out to 10 kHz or so. If you want a better microphone, there are options available, but the built-in mics. aren't half bad. My only complaint with the SLM is that the slow response is too fast, but it's a minor niggle. SignalScope Pro has many more features, including a signal generator and oscilloscope. These require additional cables and clutter, which, for me, negates the best feature of all: Portability. While SignalScope Pro will not replace my laptop-based rig, the ability to have your essential meters available anywhere, anytime, opens a world of possibilities. If you have an iPhone, are serious about sound, and wondering where best to spend the next $74, you really need to consider this app. It's a game changer.
This is a tool, not a toy. Yeah it's not $0.99, but it's solid and accurate.
This was a great but expensive tool. It was discontinued in January 2018 for a $72/year subscription product (Signal Scope X). This version is no longer updated as of March 2018.
It does everything computer based high end programs can do but does it on the iPhone. Lacking right now (but supposedly in development) is a way to get your analytical mic connected to your iPhone 4. What we need is a phantom supply/dock connector with A-D capabilities. You cannot use the 3.5mm jack as it has a curve to it (iOS built in) that prevents accurate, flat and extended response capabilities. When this is worked out I will no longer have to cart around my computer for true, accurate audio analysis.
Our products require acoustic testing. Since this app has the potential to become something our customers might use, we figured we better buy it and compare its results against our B&K meter. The built in iPhone mic works pretty good, and I am impressed with this app. I can even see situations where I might use it instead of the B&K. I really don't like what it takes to see some of the data though. Being able to email the .txt file to yourself would be more flexible and useful than the HTTP server. If Faber wold change that, I would give it five stars.
At first I was sceptical but once I tried it out and compared it to my other anylizer (phonic), I was very impressed. The signal generator is great for quick setups and there's no more packing around a clunky anylizer. Just pull your phone out of your pocket and go! It may not be PERFECT with the built in mic but it's pretty frik'n close! If you do a lot of sound setup, BUY IT.
I guess I should have looked a little more closely at the frequency response specs for the iPhone 4 but in my defense the iPhone 4 was not even addressed on this apps web site. At the time of my purchase. The problem is that the iPhone 4 uses a high pass filter ( or a shelf ) around 100 HZ on both the internal mic and the headset mic line thus making accurate readings below 100HZ impossible. I was later able to confirm this in a "forum" but I think that info should have been made readily available on their web site info. This is a big deal to me as we use SUBS all the time. At this time I'm unaware of any workaround for this issue. It's a shame because this is such an incredible tool otherwise but it's like a prizefighter with one hand tied behind his back until this issue can be addressed.
Period reviews recovered from Apple's customer-review feeds via the Wayback Machine.