Sound Lissajous Meter

Sound Lissajous Meter


サウンド・リサジュー・メーター


$3.99

3.0for iPhone, iPod touch
7.9
1 Ratings
TOON,LLC
Developer
960.5 KB
Size
Feb 27, 2023
Update Date
Utilities
Category
4+
Age Rating
Age Rating
4+
Apps in this category do not contain restricted content.
9+
Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.
12+
Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.
17+
You must be at least 17 years old to access this App.
Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.
Sound Lissajous Meter Screenshots
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About Sound Lissajous Meter

"Sound Lissajous Meter" is a new sound analysis app that displays audio signals in Lissajous curves.

Lissajous is a planar figure obtained by combining two single vibrations vibrating in directions perpendicular to each other.

It can be displayed in a two-dimensional curve by Lissajous in the vertical axis as a microphone input signal and the horizontal axis as a reference sine wave.

For example, when a sine wave with the same frequency as the reference sine wave is reproduced from an audio system, you can observe changes of the frequency or phase in a Lissajous curve pattern.

In the case of an unknown sound source, you can analyze the source using the correlation between amplitude, frequency and phase and the reference sine wave.

In addition, it can display Lissajous demo according to changes in frequency and phase. Please use for Lissajous pattern understanding and learning.

Features:
- Lissajous sound visualizations (X: internal reference signal, Y: microphone input signal)
- Mode selection of reference frequency (Oct / Scale / Any) : "Oct" - 1/3 octave band (63Hz - 16kHz), "Scale" - 12 equal temperament (A3 - A5), "Any" - Arbitrary frequency input (100Hz - 10kHz).
- Reference frequency setting slider (Reference frequency) - change reference sine wave frequency. In "Any" mode, logarithmic change in reference frequency for 1/2 to 2.
- Input level adjustment (Gain) : 0 - 40 (0.1 step)
- Jitter adjustment (Jitter): ± 2.0 (0.01 step)
- Noise filter (Filter)
- Demo display (Lissajous): Lissajous sample display

Example of application:
- Checking phase of room acoustics or monitoring changes in amplitude, phase and frequency from place to place.
- Analysis of unknown sound signal.
- Monitoring and analysis of sound changes of environmental sounds.
- Sound Visualizer

Note:
- The internal reference signal and the measured signal are asynchronous. Since the signals from the microphone and other external inputs are not synchronized, the synchronization relationship is not guaranteed by stop/start, change of various parameters, etc.
- Enabling the noise filter may reduce the level of the input signal extremely. Adjust the input level to make it easy to see the amplitude of Lissajous.
- The jitter adjustment can reduce the rotation of the phase angle when Lissajous curve's phase changes sequentially at the same observation position. But the correction may not be possible if the phase change is severe.
- The phase θ is valid only when the reference frequency and the measurement frequency are the same.
- At the time of the first access to Microphone and Photos after installing the app, you will be asked authorization to access them by the iOS system. If you have not enabled this setting, the app cannot access them by privacy restrictions of the iOS system. Please enable the access permission on the iOS setting, "Settings > Privacy & Security > Photos or Microphone".

Please visit our iOS app support page for more information on this app.
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What's New in the Latest Version 3.0

Last updated on Feb 27, 2023
Old Versions
- Improved internal processing and performance.
- Renewed UI design.
- Requires iOS 15.0 or later.
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Version History
3.0
Feb 27, 2023
- Improved internal processing and performance.
- Renewed UI design.
- Requires iOS 15.0 or later.
2.1
Feb 26, 2021
- Minor improvements.
- Requires iOS12.5 or later.
2.0
Nov 26, 2020
- Expanded the frequency setting function of the reference sine wave.
- Changed UI design.
- Minor improvements.
- Requires iOS12.4 or later.
1.0
Mar 19, 2019

Sound Lissajous Meter FAQ

Sound Lissajous Meter is available in regions other than the following restricted countries:
China,Belarus,South Korea,Russia,Hong Kong
Sound Lissajous Meter supports English
Click here to learn how to download Sound Lissajous Meter in restricted country or region.
Check the following list to see the minimum requirements of Sound Lissajous Meter.
iPhone
Requires iOS 15.0 or later.
iPod touch
Requires iOS 15.0 or later.

Related Videos

Latest introduction video of Sound Lissajous Meter on iPhone

Sound Lissajous Meter Alternative

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