The relative intensity of the sound at any particular time and frequency is indicated by the color of the spectrogram at that point. A spectrogram provides more complete and precise information than a musical score because it is based on actual measurements of the changing frequency content of a sound over time.

Four user-selectable color map options included with in-app purchase. Adjustable gain and contrast options assist in dialing out unwanted frequency information or to intensify desired characteristics.

Choose up to a 4x speed to capture even the quickest sounds before they decay. Analyze them using the log scale option or remove the log scaling for closer analysis.

Features:

-Log scale option for viewing values with greater detail.

-Contrast and gain controls.

-Four different color map options to help isolate or view particular frequencies.

-Speed control (up to 4x) allows shorter signals to be viewed with more detail.

-Capable of reading up to ~22kHz with optional extended frequency mode upgrade.

OSCILLOSCOPE (center): The iStroboSoft oscilloscope allows the user to view the actual shape of the signal coming into iStroboSoft. Quickly find frequency anomalies that may be impeding successful tuning results by monitoring the incoming waveform and looking for spikes or jitter in the signal. iStroboSoft auto-scales the amplitude in the signal to fit it to the screen for easy viewing. You use it to see the shape of the signal more than the actual incoming amplitude level.

Some common uses for using the oscilloscope would be to find bad string windings, noisy pick-ups, and/or cable hum issues.

Features:

- User selectable zoom (2x, 4x, 8x, 16x).

SPECTRUM WAVEFORM ANALYZER (right): The spectrum analyzer lets you see what is going on like never before. High-resolution zooming lets you analyze frequencies with unprecedented precision, all in real time. With AUTOSCROLL enabled, the zoomed spectrum will track your fundamental tone so it never goes off screen. Traditional logarithmic and linear scaling on the frequency axis can be chosen, but iStroboSoft goes further and even also allows frequencies to be displayed as notes so you can make sense of the signal in a musical context.

Variable damping (averaging) gives you a longer-term view of the signal, allowing you to see small signals that would otherwise be hidden in the background noise.

The 'X' indicates the fundamental note being identified by iStroboSoft. With the AUTOSCROLL mode engaged, the fundamental note will automatically change with the display.

The spectrum analyzer can be extremely useful in finding noise present in the incoming signal helping to identify reading difficulties. Harmonic detections and visual recognition of fundamental frequencies can also be seen in the analyzer view.

Features:

- Pinch and zoom display to view frequencies closely (double-tap to reset view.)

- Manually swipe (left or right) across the spectrum or use AUTOSCROLL to have iStroboSoft constantly display the fundamental throughout the entire range.

- Dampen control to adjust sensitivity.

- Log scale option for viewing values with greater detail.

- View measurements in Hertz or their corresponding note/octave value.

- Capable of reading up to ~22kHz with optional extended frequency mode upgrade.

SPECTRUM BAR GRAPH (left): The extraordinary definition of the spectrum bar view enables users to analyze frequencies in real-time and view their harmonic relationships with unparalleled accuracy using a clean, easy-to-read interface. Watch frequency relations change as the input frequency varies to help identify problematic areas in sound or use it as a teaching tool for harmonics. Zooming the screen all the way out will allow full viewing of the frequency spectrum while zooming in will permit you to view frequency peaks with exacting precision.

With AUTOSCROLL enabled, use the spectrum bar graph to track changing frequencies up-and down the spectrum as they occur. Logarithmic and linear scaling on the frequency axis can be toggled as a viewing option or view the frequencies as to where they are located with note/octave labeling.

Variable damping (averaging) gives you a longer-term view of the signal, allowing you to see small signals that would otherwise be hidden in the background noise.

Features:

- Pinch and zoom display to view frequencies closely (double-tap to reset view).

- Manually swipe (left or right) across the spectrum or use AUTOSCROLL to have iStroboSoft constantly display the fundamental throughout the entire range.

- Dampen control to adjust sensitivity.

- Log scale option for viewing values with greater detail.

- View measurements in Hertz or their corresponding note/octave value.

- Capable of reading up to ~22kHz with optional extended frequency mode upgrade.

Users can enjoy a real-time view of tuning changes in the fundamental frequency along with the first four overtones with razor-sharp precision using the optional harmonics mode. The fundamental will always be displayed as the left-most band and the harmonic overtones will be displayed in order from left-to-right. The out-of-tune difference is displayed by the direction and speed of the strobe bands.

The harmonic upgrade provides an excellent utility for inspecting the quality of instrument strings as dead strings will not ring in upper harmonic content or provide erratic, out-of-tune harmonics.

For tuning guitar, you can use this screen to tune until the brightest band stops (which may not be the fundamental note). This gives you a better "overall" tone as compared to just hearing the fundamental on its own as all harmonics are taken into consideration using this method.

Help isolate instrument intonation, neck issues or pickup problems as well by analyzing the harmonic tuning levels.

You can also use this screen to manually apply a stretch tuning. For example, on the E strings of the guitar, make sure the harmonics of the lower notes match the same tuning of the higher notes fundamental, i.e., E2 second harmonic matches the E4 fundamental.

Percussion instrument builders who need to know what is happening beyond the fundamental note can also use the harmonic upgrade to see which harmonic(s) need(s) to be adjusted during the building process.

iStroboSoft will measure up to 5.5kHz in its standard form (Normal Mode). This is an acceptable range for most stringed instruments. In cases where an extended tuning range may be desired (tuning piano, bells, singing bowls, e.g., instruments with frequency ranges above 5kHz), the optional frequency modes may be used.

These optional modes are also tied to your in-app scopes and will extend their ranges as well (where applicable).

Extended Range Modes:

Sub-bass: 0 - 5.5125kHz (Best for less than 20hz. Updates at a slower rate and provides higher accuracy in the extreme low registers.)

Normal: 0 - 5.5125kHz (Default frequency range. This is the mode iStroboSoft ships with.)

Extended: 0 - 11.025kHz (Higher upper range with greater accuracy above 6kHz.)

Full: 0 - 22.05kHz (Highest and widest range mode.