benfaber
benfaber
Reactions
Comments
-
Yes. It works fine. In fact, the TuneTalk is now the device I typically recommend. Ben
-
That is only the case if you have selected an output channel for your source or reference signal, and you don't have any Signal Generator tools using that same output channel. If you select an output channel for your measurement, there won't be any measurement made, unless there is some signal being applied to that output…
-
Thank you for your feedback, Peter! Ben
-
If you would, please provide a movie capture of your screen when this behavior occurs. Ben
-
Ashish, Perhaps, you could describe your observations in greater detail. Do you mean that tool windows open, that weren't open, when you use the Save command? Do you mean that tools windows open when you try to quit the application? That would be very strange, indeed. We have recently discovered that the recent documents…
-
The current version of SignalScope Pro is compatible with Snow Leopard. You are welcome to download it and try it out before you buy.
-
Since you know the approximate sensitivity of your microphone, you just need to perform a voltage calibration on your Fast Track Pro and then you can enter your microphone sensitivity directly (you'll need to select Pa for the units on your mic input channel). See the Tutorials section of the SignalScope Pro Help for audio…
-
SignalScope Pro's octave analyzer performs the same measurements as SoundMeter does, but it does it for each octave or 1/3-octave band. Levels are displayed graphically, (or numerically, one frequency band at a time, with a cursor). It can display an overall level (numerically), but only the current overall level is…
-
Electroacoustics Toolbox was indeed the program referred to. Thus far, it has essentially existed as a test and measurement platform, with a fairly general set of real-time analysis tools. A plug-in for the Toolbox is currently in development that will perform room acoustics parameter calculation according to ISO 3382. As…
-
You can measure time delay in IOScope with the impulse response, ETC, or correlation function. I would recommend using the correlation function with the cursor peak track function turned on. The cursor time will then correspond to the delay through the system or device under test (DUT). (The delay will also include the…
-
As of version 1.1, SignalScope Pro includes square, triangle, and sawtooth waves. Duty cycle for the square wave is currently constrained to 50%. The new waveforms are synthesized with little or no aliasing artifacts. http://itunes.com/app/SignalScopePro
-
The iPhone is not a USB host, so a USB mic can't be used as an input source. Ben
-
That's right. The iPhone (and 2G iPod touch) can tell the differences between headphones (or a stereo connector) and a headset (a four-conductor connector). When the headset is used, input and output are routed through that single jack. If headphones are used, the iPhone looks for input from another source, so you can use…
-
Grant, The iPhone will prevent you from using the headset input and the dock output at the same time. However, if your goal is to use the 1/3-octave spectrum analyzer for equalization, then it may be just as well to play pink noise from a CD, as you suggested. The original iPhone has the flattest frequency response on its…
-
Audiofile, SignalScope, SignalScope Pro, and IOScope can all work with two-channel audio input via third party accessories connected to the dock connector. The following articles (on the blog) may be of interest to you: Dock Connector Audio I/O iPhone Line Input Frequency Response Comparison Ben
-
Thank you for your feedback. Ben
-
Paul, What amount of smoothing are you looking for? Perhaps a better question is: What frequency resolution do you need? Would the 1/3 octave analyzer in SignalScope Pro be adequate for your needs? I haven't experienced that before with SignalScope. Do you only hear the noise when using Audio Through in SignalScope? Do you…
-
Hello Adelbert, Please send a screenshot of the Audio MIDI Setup utility app, with your StudioKonnekt 48 selected in the "Properties for:" popup menu, to support@faberacoustical.com. Please send a screenshot of SignalScope Pro's Device I/O Setup window, with the StudioKonnekt 48 selected in the device list. Thank you! Ben
-
Hello Don, Thank you for your suggestions. Have you taken a look at the Alesis ProTrack? We're still waiting on Alesis to start selling sleds for iPhone and iPod touch, but the ProTrack works for stereo phantom powered mic input. A few more tidbits regarding the ProTrack can be found on the blog. Ben
-
Hello Jason, If you use the built-in microphone on the 2G iPhone, the sample rate is limited to 8 kHz, which is why you can only analyze signals up to 4 kHz. If you use a headset microphone, or a dock connector input, the sample rate will be 48 kHz, so you can analyze signals up to 24 kHz. You might want to read some of…
-
It really depends on what your needs are. If you just want to analyze audio band signals, then Electroacoustics Toolbox with the RMA FireFace400 would make a great scope. However, you did indicated that you plan to work with electronics. For that, you would do well to acquire an oscilloscope that supports frequencies down…
-
In short, no. The lowest frequency signals are essentially driven into the noise floor by the iPhone's high pass filter. "Compensating" in software cannot bring back signals that are already lost, and it won't improve the SNR for those frequencies which have not been totally lost. It's unfortunate that Apple decided to…
-
Sergio, Your original iPhone and ThumbTacks microphone should work just fine together. What does this mean? Do you have Autoscale set to Auto? Does it help to turn it off or set it to Up? Increasing the number of spectral lines might also help, since that will slow down the rate at which the spectrum display updates. Ben
-
Scott, Please read the recent articles on the blog in the iPhone category. There you will find explanation and examples of input options for the various iPhone OS devices. A good starting point would be iPhone OS Audio Routes. You can also subscribe to the blog's rss feed, or follow faberast on Twitter, in order to keep up…
-
Try increasing the number of spectral lines to the maximum of 4800 (that will increase the length of the sweep to 9600 samples, which is 0.2 seconds). If you need more control over your sweeps, you might want to check out SignalSuite.
-
Just as you quoted from the documentation, starting a tool does not start the selected output device, so you need to tell the appropriate device to start. Here's a sample script that picks the first available output device on the system, and outputs a 1 kHz tone on that device: tell application "Electroacoustics Toolbox"…
-
The length of the sweep (and periodic noise) in SignalScope Pro is tied to the FFT length used by the FFT analyzer. Increasing the number of spectral lines will increase the length of the sweep.
-
Yep. Take a look at the articles recently posted on the blog, particularly the one regarding dock connector I/O compatibility. Devices that work with the iPhone 3G also work with the iPhone 3GS. Ben
-
In Single mode, the display will continue to update, even without a trigger event (like Auto mode). The oscope will pause when the first trigger event occurs (after the current data buffer fills, of course). In Normal mode, the display will not update until a trigger even occurs (if triggering is off, the display will be…
-
The two-finger pinch-expand gesture, when used within the horizontal axis label region of the oscilloscope plot, will change the time scale. You can increase the time scale to as much as 500 ms/div, which will display 5 seconds of data (it will actually capture 10). I agree, totally, and I recommend that you let Apple know…