VoicePrinter
Utilities
Only for iPhone
Free · In‑App Purchases · Designed for iPhone
iPhone
Sound is decomposed into two dimensions and displayed continuously over time.
The premium version offers a new style of audio recorder/player.
This app can be used for analysis of
Human voice,
Environmental sound,
Sound of animals,
musics,
etc.
The specifications are as follows.
Sampling rate = 10000 to 44100 Hz
Display maximum frequency = 1000 to 22050 Hz
Display time range = 2 to 10 seconds
Frequency axis display resolution = 100
Time axis display resolution = 10 / sec
From version 1.1, recording, playback, import, and export functions based on sound and voiceprints can be used by in-app purchase. In this case, banners will not be displayed.
The premium version allows recording, playback, import of external sound source files, and external output.
・Record under the following conditions
Sampling frequency = 10000~44100Hz
・Display audio analysis results under the following conditions (audio is played in sync with the analysis screen)
Maximum display frequency (high-pitched display frequency limit) = 1000~22050Hz (half the sampling frequency or less)
Display time range (time that can be displayed on one screen) = 2~10 seconds
Frequency display resolution (frequency axis: number of data displayed on the vertical axis) = 200 points
Time axis display resolution (time axis: display interval (pitch) on the horizontal axis) = 50~200ms (10~200 points)
・Importing external audio source files
Imports 16-bit linear PCM mono audio sources. (In the case of stereo, only 1ch is imported.)
・External output
Outputs as 16-bit linear PCM mono.
*To input and output data to iCloud Drive, you must enable iCloud Drive in System Preferences.
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Ratings & Reviews
Added a sample video of premium features.
The developer, HIROFUMI MARUO, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Linked to You
The following data may be collected and linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- HIROFUMI MARUO
- Size
- 5.4 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.
- Languages
- English and Japanese
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Premium Functions $0.99
- Copyright
- © 2017-2025 Cariya Japan.
