Description - iOS app / Onmon

Onmon - Audio & Voice Spectrogram for iPad

icon_Onmon

"Onmon" is Spectrogram Analyzer app for Audio and Voice band. It uses the Fast Fourier Transform (FFT) processing to analyze incoming sound signals and provides a precision frequency response measurement.

"Onmon" is a visual representation of the spectrogram of frequencies in a sound as they vary with time in the frequency range of 24kHz from 20Hz.

In addition, this app is equipped with the replay function, so you can see the spectral analysis results offline.

By the Ver 4.0, the processing performance and the UI design have been improved.

This app has two analysis modes, Audio mode and Voice mode. Audio mode performs a real-time spectral analysis as the target of audio signal by Spectrogram and Spectrum. It can be used for discovering visual hidden images in the various sounds, such as music, birdsongs and environmental sounds. You can also be used to capture an unpleasant high-frequency noise in your sound system.


Onmon Audio mode SS

Voice mode performs the frequency domain analysis as the target of voice signal, which can be displayed simultaneously Spectrum, Cepstrum, Envelope, Formant and Spectrogram. It can be used for visualization analysis of voices, speech, vocal, and squeaking sound of the animal.


Onmon Voice mode1 SS

Onmon Voice mode2 SS



Please to click the following link to download "Onmon" from App StoreTM. It will be open the download page on App StoreTM.


It will move to another site, download from Aplle Store


Installation of iTunes is required.
You can download this app, communications charges when connecting to the App Store will be borne by the customer.
* iPad is a trademark of Apple Inc., registered in the U.S. and other countries.
* App Store is a service mark of Apple Inc.

Products Information

Version : 4.1
Release date : July 29, 2016
Size : 0.5 MB
Category : Education, Music
Recommendation : Compatible with iPad. Requires iOS 9.3 or later.

Spectrogram

The spectrogram is a graphical image with two geometric dimensions that the horizontal axis represents time and the vertical axis is frequency, and the addtional third dimension is indicating the amplitude of a particular frequency at a particular time that is represented by colour of each point in the image.

"Onmon" measures the input acoustic signals, and displays the frequency spectrogram of 24kHz, 12kHz, 6kHz, 3kHz and 122 split bands of 1/12 octave.

Observation frequency range: 20 - 24000Hz
Measurement display X-axis - time(sec)
Measurement display Y-axis - frequency(Hz)
Measurement display color image - signal's amplitude

Features

"Onmon" has the following features:


[common]

FFT: 4096 points/frame.
Sampling Rate: 48kHz/sample (maximum measurements frequency: 24kHz).
Spectrogram analysis (horizontal-axis:time, vertical-axis:frequency, color-image:amplitude)
Spectrum analysis

[Audio mode]

Spectrogram display
Spectrum response display
Frequency bandwidth : 24kHz, 12kHz, 6kHz, 3kHz, 1/12 octave band
Tracing function of Peak/Level amplitude on 1/12 octave display. (Function)
Dynamic range of Amplitude display: 120dB
Pan to adjust visible amplitude ranges (Range: 0dB/-30dB)
Peak-Level Hold function. (Hold)
Display Pause function. (Pause)
Zoom and scroll function in Spectrogram window.
Display capture facility (Snapshot: Storage image file in JPEG format).
Replay function with offline analysis and playback volume control.(Replay)
Measurement time : Up to 180 seconds

[Voice mode]

FFT Spectrum display
Cepstrum display
Envelope display
Formant display : 1st, 2nd frequency
Spectrogram display
Replay function with offline analysis and playback volume control.(Replay)
Measurement time : Up to 40 seconds

Applications

"Onmon" can be very useful for a variety of applications including:

Transient characterization of playback frequency of speakers and headphones
Testing and Characterization of audio equipment, setting
Visualization analysis of the sound source, such as voice, conversation and animal sounds
Analysis and evaluation of environmental sounds, noise pollutions, mechanical noises of the factory, vibration sounds of the car, and more....
Analysis of the sound configuration, such as music performance
Various acoustic testing, and others

Mode

"Mode" is a function of switching between Audio mode and Voice mode. "Mode" button is located on each mode, the operation mode transitions by tapping the button. The system will start Audio mode in the app startup.

Audio mode - Top view

Onmon Audio mode SS

The view of the audio mode includes the operation control buttons and the measurement display (TRACE DISPLAY) .

It has thirteen buttons for the operation control. In order from the top, there are the measurement control (Start/Stop), Frequency selection (24KHz, 12kHz, 6kHz, 3kHz, 1/12 octave band), trace display function (Function), replay control(Replay/Pause), clear display of Replay (back to the top), hold function (hold), signal power range (range: 0/ -30dB), trace capture (Snapshot) and operating mode (Mode).

Audio mode - Start/Stop

By tapping Strat button, the spectrum analysis will start and display the results on "TRACE DISPLAY". By tapping "Stop", it will be stopped. Measurements of this mode will automatically stop at a maximum of 3 minutes.

In addition, the microphone input signal is temporarily stored as digital data. You can re-display the analysis result in Replay function.

The access permission to the microphone will be confirmed from the iOS system at the first start-up. Please enable access to the microphone.

Audio mode - Frequency

According to the sound characteristics and the observation bandwith frequency, you will be able to select the target frequency. You can choose one of the frequency from five frequency selection button (24Khz, 12kHz, 6kHz, 3kHz, 1/12 octave band). For example, if you select the 6kHz frequency, the spectral measurement will be displayed the frequency range up to 6kHz. In the case of 1/12 octave, it will be displayed at 122 divided frequency bands of 1/12 octave.

Audio mode - Hold

"Hold" is a setting of the peak hold function of the trace display. It is the function to continue to retain the maximum value of each frequency band. If you enable "Hold" (HOLD ON), it is possible to observe a maximum cumulative value of the spectrum of the acoustic signal over a long period of time. The default is to disabled (HOLD OFF).

Audio mode - Function

"Function" is the setting of the tracing function of Peak/Level amplitude at 1/12 octave band measurement. It can select the trace method of either the average power level (LEVEL) or peak level (PEAK). Please set LEVEL if you want to observe in the average power level, or set PEAK if you want to observe the peak instantaneous value. The default is set to PEAK.

Audio mode - Range

"Range" is the setting of the display power range. Dynamic range of the signal intensity in "TRACE DISPLAY" is 120dB. By "Range" setting, you can be observed in the amplitude display range that is shifted at 0dB or -30dB. The default is set to 0dB.

Audio mode - Trace Display

"TRACE DISPLAY" is the image monitor that displays the frequency spectrogram and spectum measurements.

It will display the color spectrogram of frequency for each specific time. The horizontal axis (X-axis) is time, the vertical axis (Y-axis) is frequency (frequency is higher on top of the graph.). The signal strength of each frequency will be drawn full color graphics. (As it becomes close to redden, the signal strength is strong.)

Audio mode - Replay/Pause

"Replay" is a function that can re-display the temporarily stored measurement data. It can also be evaluated again by changing the parameters such as frequency settings and signal intensity setting.

"Pause" will temporarily stop the measurement display. Clear Display (back to the top) initializes "TRACE DISPLAY", and returns to the beginning of the playback sound.

At the time of display stopping of TRACE DISPLAY, the spectrogram display can be zoomed in a pinch-out, and you can scroll in the time axis direction.


Onmon Audio snapshot

In addition, the slider volume (replay monitor level) is enabled during the "Replay" processing, so you can adjust to the playback volume.

Audio mode - Snapshot

"Snapshot" is a function of capturing a still image for the trace image being currently measured.

At the tap of "Snapshot" button, the image of "TRACE DISPLAY" is saved JPEG file format to Photos. File name is IMG_xxxx.jpg.



Onmon Audio snapshot

In addition, at the first time, the confirmation of access to the camera roll is required once from iOS system when you press "Snapshot" button.

Voice mode - Topview

The view of Voice mode includes the operation control buttons, TRACE DISPLAY and the product information. Operation controls has five buttons, in order from the top, the measurement control (Start/Stop), spectrogram display adjustment (Spectrogram view level), replay control (Replay/Pause), clear display at the time of replay (back to the top), operating mode (mode).

Voice mode - Trace Display

This mode performs the frequency domain voice analysis for the microphone input signal.

To view Spectrogram, please swipe to left on "TRACE DISPLAY". Spectrogram display adjustment (Spectrogram view level) is enabled if Spectrogram is displayed. You can adjust the graphic color of the spectrogram by setting "Spectrogram view level".





[Display of Voice analysis]

FFT Spectrum : Display FFT-spectrum of input signal.
Cepstrum : Display Cepstrum.
Envelope : Display envelope of spectrum.
Formant : Display Formant matrix of F1 and F2.
Spectrogram : Display spectrogram of Envelope.

Voice mode - Start/Stop

By tapping Strat button, the voice analysis will start and display the results on "TRACE DISPLAY". By tapping "Stop", it will be stopped. Measurements of this mode will automatOS system at the first start-up. Please enable access to the microphone.


Voice mode - Replay/Pause

"Replay" is a function that can re-display the temporarily stored measurement results. "Pause" will temporarily stop the measurement display. Clear Display (back to the top) initializes "TRACE DISPLAY", and returns to the beginning of the playback sound.

Voice mode - Info

Info is displayed our product information. If you tap "(to toon.llc website)", it will jump to the support page Safari is launched. Also if you tap "(to App Store)", the product page is displayed App Store is launched.

Attention

At the time of the first access to microphone and photos after installing the app, you will be asked permission to access them from the iOS. If you did not enable this setting on this time, it can not be access from the app by privacy restrictions of the iOS. Please enable slide switch of the app in the access permission of the iOS setting, "Settings > Privacy > Photos or Microphone".

Information

Onmon version 4.1 was released on July 29, 2016.
Onmon version 4.0 was released on July 16, 2016.

* This app has been renamed to "Onmon" from "fo-Onman".

fo-Onmon version 3.0 was released on April 25, 2015.
fo-Onmon version 2.0 was released on August 22, 2014.
fo-Onmon version 1.0 was released on December 19, 2013.

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Contact us

Inquire about this app please from below! Please contact us with the following details if you have any requests or problems.

support@toon-llc.com

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