Sonneta Voice Monitor app for iPhone and iPad

Sonneta Voice Monitor is used by speech-language pathologists, voice coaches, and their patients and students. It is the only app of its kind to use a pitch detection algorithm published in a leading peer-reviewed journal in voice research. Sonneta Voice Monitor is used by clinical faculty and researchers at over 30 universities and teaching hospitals.

Monitor Vocal Pitch and Sound Level
• Measure vocal pitch (fundamental frequency) and sound pressure level (SPL).
• Real-time meter display and moving chart provide you with hands-free feedback for singing or speech therapy exercises.
• Designed specifically for measuring the human voice — talking, singing, shouting, and humming. Sonneta Voice Monitor will not measure the frequency of non-vocal sounds such as whistling, musical instruments, etc.

Measure Phonation Time
• Automatic hands-free measurement of phonation (vowel sound) duration.
• Allows you to set target durations for visual feedback.
• Useful in conjunction with LSVT under supervision of a qualified clinician.

Record Samples and View Statistics
• Record samples of your voice for later playback.
• A recordings list organizes samples by date.
• Option to give a title to each recording.
• View statistics for each recording including average, minimum, maximum, range, and standard deviation for pitch and sound level; maximum phonation time.

Play Back Recordings to Review Pitch, Sound Level, and Phonation Time
• Select a sample from the recordings list to play back over the speaker.
• Pitch, sound level, and phonation time are displayed during playback and scrubbing.

Organize, Share and Export Your Data
• File your recordings and data by client, by voice exercise, or any way you like.
• Export measurements and statistics to a spreadsheet.
• Share your recordings with your speech therapist using Mail, Messages, or AirDrop (provided you both have the latest version of Voice Monitor installed).

Set Prompts and Alerts
• Speech therapists and voice coaches can record prompts for their clients to play back during practice.
• Record any number of prompts and select them by title.
• Therapists can also set limits for pitch and sound level. Users are alerted if they exceed the limits.
• Prompts, limits and phonation targets are saved independently for each client file you create.

Absolute Accuracy
• Voice-activated calibration allows you to measure absolute sound level no matter where you place your iPhone or iPad. It even works with external microphones. Calibration requires a sound level meter (sold separately).
• You can use the app without calibration to measure relative sound levels.
• Pitch is measured in Hertz or semitones and does not require calibration.