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lingWAVES voice protocol
Determine voice data in 4 simple steps and supplement them with individual measurements in a 5th step.
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lingWAVES voice protocol
5 steps
Step 1 (aerodynamics of the voice): s/z ratio, MPT (maximum phonation time)
Step 2: Pitch range, voice quality (jitter, shimmer, irregularity-roughness and GNE-noise-accentuation)
Step 3: Severity of the voice disorder – DSI (Dysphonia Severity Index)
Step 4: Analysis of spoken text, average speaking voice pitch, range and dynamics
Step 5: real-time display for own and/or individual therapy applications and patient biofeedback volume & pitch
5 STEPS
1st step (aerodynamics of the voice): s/z ratio, MPT (maximum phonation time)
2nd step: Pitch range, voice quality (jitter, shimmer, irregularity-roughness and GNE-noise-accentuation)
Step 3: Severity of the voice disorder – DSI (Dysphonia Severity Index)
Step 4: Analysis of spoken text, average speaking voice pitch, range and dynamics
5. additional: real-time display for own and/or individual therapy applications and patient biofeedback volume & pitch
Further information on the voice protocol
Step 1: s/z ratio and maximum phonation time (MPT)
3 minutes for step 1: recording and highlighting of s, z and MPT, immediate display and comparison with standard data and presentation in the history display, pre-post diagnostics.
s/z ratio is an indicator of vocal dysfunction. It measures the ability to produce an unvoiced sound 's' compared to a voiced sound 'z'. 95% of patients with vocal fold dysfunction have an s/z ration greater than 1.40.
Maximum phonation time (MPT) is a useful measurement of vocal function. It is easy and quick to perform and provides a simple test of glottal efficiency.
Step 2: Analyze the pitch
2 minutes for step 2: Recording and marking a held vowel 'a' and a glide to determine the lowest and highest pitch of the patient's voice. Immediate display of jitter, shimmer and, in addition, new, objective hoarseness parameters such as irregularity-roughness and GNE-noise-breathyness; also in comparison to standard data and history function. This step introduces a new pitch quality analysis that displays voice quality over the entire pitch range. It measures roughness and breathiness for different pitches.
Pitch: This term is used for the auditory perception of voice and speech, and refers to how high or low a voice is perceived to be. The pitch depends on the number of vocal fold vibrations per second and is technically referred to as the fundamental frequency (F0). It is an acoustic correlate of emphasis and intonation.
Step 3: Dysphonia Severity Index (DSI)
1 minute for step 3: To determine the severity of the voice disorder (DSI), you now only need a measurement of the quietest volume of the patient's voice. To do this, a held vowel 'a' is recorded starting at a normal volume and the volume is slowly reduced until the vocal folds stop vibrating.
In addition to the DSI, the trend shows measured values for different sessions for DSI, jitter, highest and lowest volume.
Step 4: Analyzing the speaking voice
3 minutes for step 4: Recording the standard text “The Rainbow Passage”, which is displayed on the screen during the recording. Pitch and volume are displayed in a speaking voice field display. The display of the normalized volume in db(A) and frequency in Hz thus provides a quick overview of the speaking voice.
Step 5: Real-time display of pitch and volume
Do you want to perform an individual measurement or biofeedback of pitch and volume? Then the real-time display of pitch and volume is exactly what you need. This is used, among other things, to carry out and document Parkinson's treatments; you can record a patient's pitch, volume and tone duration and evaluate them conveniently. You can even set targets for volume and pitch.
Further information on the voice protocol
Step 1: s/z ratio and maximum phonation time (MPT)
3 minutes for step 1: recording and highlighting of s, z and MPT, immediate display and comparison with standard data and presentation in the history display, pre-post diagnostics.
s/z ratio is an indicator of vocal dysfunction. It measures the ability to produce an unvoiced sound 's' compared to a voiced sound 'z'. 95% of patients with vocal fold dysfunction have an s/z ration greater than 1.40.
Maximum phonation time (MPT) is a useful measurement of vocal function. It is easy and quick to perform and provides a simple test of glottal efficiency.
Maximale Phonationsdauer (MPT) ist ein nützliche Messung der vokalen Funktion. Sie ist leicht und schnell durchführbar und bietet einen einfachen Test der glottalen Effizienz.
Step 2: Analyze the pitch
2 minutes for step 2: Recording and marking a held vowel 'a' and a glide to determine the lowest and highest pitch of the patient's voice. Immediate display of jitter, shimmer and, in addition, new, objective hoarseness parameters such as irregularity-roughness and GNE-noise-breathyness; also in comparison to standard data and history function. NEW: This application introduces a new pitch quality analysis that displays voice quality over the entire pitch range. It measures roughness and breathiness for different pitches.
Pitch: This term is used for the auditory perception of voice and speech, and refers to how high or low a voice is perceived to be. The pitch depends on the number of vocal fold vibrations per second and is technically referred to as the fundamental frequency (F0). It is an acoustic correlate of emphasis and intonation.
Step 3: Dysphonia Severity Index (DSI)
1 minute for step 3: To determine the severity of the voice disorder (DSI), you now only need a measurement of the quietest volume of the patient's voice. To do this, a held vowel 'a' is recorded starting at a normal volume and the volume is slowly reduced until the vocal folds stop vibrating. The history function shows measured values for different sessions for DSI, jitter, highest and lowest volume.
A patient's voice quality and the degree of voice disorder are determined by the voice disorder index (VDI), which was developed as an objective and quantitative correlate of perceived voice quality. The VDI is based on a multidimensional approach, i.e. not only on an acoustic measurement (such as jitter and shimmer). This makes it more closely related to the perceptual evaluation of voices.
Step 4: Analyzing the speaking voice
3 minutes for step 4: Recording the standard text “The Rainbow Passage”, which is displayed on the screen during the recording. Pitch and volume are displayed in a speaking voice field display. The display of the normalized volume in db(A) and frequency in Hz thus provides a quick overview of the speaking voice.
Step 5: Real-time display of pitch and volume
Do you want to perform an individual measurement or biofeedback of pitch and volume? Then the real-time display of pitch and volume is exactly what you need. This is used, among other things, to carry out and document Parkinson's treatments; you can record a patient's pitch, volume and tone duration and evaluate them conveniently. You can even set targets for volume and pitch.
