Voice Sonogram

Free

1.1for iPhone

TOON,LLC

Developer

Oct 24, 2019

Update Date

Education

Category

App Store

Age Rating

Apps in this category do not contain restricted content.

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.

Voice Sonogram Screenshots

iPhone

About Voice Sonogram

"Voice Sonogram" is sound spectrogram app that expresses color intensity by frequency analysis of temporally continuous sounds. The sound spectrogram is used for acoustic analysis and voiceprint appraisal.

This app uses some sound analysis techniques such as FFT and Wavelet transform, and graphs the analysis results. It can be easily analyzed voices and instrument sounds, or you can learn elementary sound analysis.

Characteristic:
- Analyze the sound data recorded from the built-in microphone.
- FFT, Octave band analysis, and Wavelet transform can be selected.
- Analysis result graph and time axis sound waveform can be compared in playback.
- Snapshot: Save the analysis result in Photos.

Specification:
- Sampling frequency: 48kHz
- Recording time: Approximately 3 seconds
- Discrete Fourier transform: FFT (2048 points)
- Octave band analysis: 1/48 octave band
- Wavelet transform: Gabor Wavelet
- Graph display: vertical axis - time (0 - 3.0 sec), horizontal axis - frequency (100Hz - 8000Hz)

Note:
Wavelet transform (Tap "WV" button) has a large amount of calculation, so the processing load may be depending on the iPhone model, and it may take time to display the analysis result.