MC Oscilloscope 1.2, MC Goniometer 1.2, MC Levels 1.2

All apps support the new Audiobus 2 features like multi-routing and state saving. Besides that, they can now be used via Inter-App Audio as well, which gives you even more opportunities to use them.

The audio input settings changed significantly, making it now possible to select built-in microphones and polar patterns. More information: Audio IO.

Version 1.2 is available for iOS 7+ only!

Goniometer preferences

The goniometer settings can be found in the preferences menu. Here you can adjust the appearance and functioning of all goniometers at once. All settings are saved and reloaded next time you open the app.

Time rage and amplitude range affect the visible range of data. For an uncalibrated device an amplitude of ±1 is the full scale maximum. However if you calibrated your device to a defined level of your hardware environment you might observe values above that range if clipping occurs (in that case you should decrease the gain/level of your hardware and calibrate again).

Goniometer_Menu_Goniometer

You can also enable the coordinate system and the trigger function that automatically finds onsets, which stabilises the graph for periodical signals. In that case you can greatly improve readability and overall usability of the goniometer. However, if you are analysing speech recordings or music you should turn the triggering off.

MC Levels released!

Levels-Icon-300MC Levels has been released today! It is a powerful digital multichannel level meter for your iPad or iPhone.

In combination with an external multichannel USB audio interface it is capable of displaying up to 8 channels (per source) simultaneously and is fully compatible with Audiobus!

 

MC Oscilloscope released!

MC Oscilloscope has been released today! It is a powerful digital multichannel oscilloscope for your iPad or iPhone.

In combination with an external multichannel USB audio interface it is capable of displaying up to 8 channels (per source) simultaneously. It also includes a multichannel full scale level meter and is fully compatible with Audiobus!

Oscilloscope preferences

The oscilloscope settings can be found in the preferences menu. Here you can adjust the appearance and functioning of all oscilloscopes at once. All settings are saved and reloaded next time you open the app.

Time rage and amplitude range affect the visible range of data. For an uncalibrated device an amplitude of ±1 is the full scale maximum. However if you calibrated your device to a defined level of your hardware environment you might observe values above that range if clipping occurs (in that case you should decrease the gain/level of your hardware and calibrate again).

Oscilloscope preferences

The other visual options include automatic peaks and the coordinate system. Peak values in the positive and negative range are indicated by horizontal lines, which inertially adapt to the current level over time (making them easily readable). Furthermore, the oscilloscope is capable of displaying the peak-to-peak amplitude value.

Oscilloscope display of peaks and peak-to-peak value

The oscilloscope has a trigger function that automatically finds onsets, which stabilises the graph for periodical signals. In that case you can greatly improve readability and overall usability of the oscilloscope. However, if you are analysing speech recordings or music you should turn the triggering off. The trigger level defines the amplitude threshold at which the oscilloscope scans for onsets. Adjust this value if you have problems to get a stable graph (due to noise or other irregularities).

Audio IO

All TwiddleFactor multichannel apps automatically detect the current input and output route(s). The built-in microphone and speaker of your iPad/iPhone are the default input and output. The built-in microphone only enables mono audio input. But the Audio IO settings provide the possibility to select the built-in microphone and polar pattern (options depend on your device). However, it is recommended to use the default if you do not aim for something specific.

MC Levels audio IO built-in microphone

External USB-audio-interfaces (e.g. Alesis, RME Fireface) or stereo microphones (TASCAM, Røde) provide up to 8 input channels, all of which are displayed with separate instruments on the main screen.

MC Levels audio IO

Each channel can be enabled or disabled separately. Just tap the circle representing the channel. Channels of each sources are always named L (for left), R (for right), 3, 4, 5, … and so.

You can use Audiobus to add additional input sources. Currently Audiobus supports up to three inputs simultaneously.

Levels audio IO with Audiobus sources

Please have a look at the support article about Audiobus for further information.