The functions handled by
this menu supply tools for studying vowels and more generally provide a finer
spectral analysis than the one provided by the spectrogram.
The menu commands:
Formants F1 F2 F3: Allows the tracking of a speech
segment in the F1F2 plane. The result is displayed in another window under the
main window of the application. Once the region of the spectrogram is delimited,
it is dynamically displayed using the McCandless
algorithm. The proposed algorithm is more efficient with vowels.
Data journaling (use “Show results” in
“Miscellaneous menu”)
Time [ms] Time [sample] F0[Hz] Energy[dB] F1[Hz] F2[Hz]
F3[Hz] Phoneme[text] Word[text]
Note that energy is
calculated according to parameters given in the menu “Prosody/Energy/Energy
options”, and that F0, phoneme and word are defined only if the information
does exist.
Cepstrum peak display: Displays the most visible peaks of
the cepstrally smoothed spectra for the given speech
segment. The cepstra are calculated over a 16 ms sample
window with a 8 ms overlay. The user can choose the
filtering coefficients through the Options command. Snoori
evaluates the quality of the peaks displaying the best peaks in red and the
others in black.
Data journaling (use “Show results” in
“Miscellaneous menu”)
Time [ms] Time [sample] F0[Hz] Energy[dB] Phoneme[text] Word[text] {Frequency[Hz]
Bandwidth[Hz] Amplitude[dB] for each peak}
Note that energy is
calculated according to parameters given in the menu “Prosody/Energy/Energy
options”, and that F0, phoneme and word are defined only if the information
does exist.
True envelope peak
display: Displays
the most visible peaks of the cepstrally smoothed
spectra obtained with the “true envelope algorithm” (S. Imai and Y. Abe,
“Spectral envelope extraction by improved cepstral method”, Trans. IECE, Vol. J62-A(4), pp. 217-223, 1979) for the
given speech segment. The cepstra are calculated over
a 16 ms sample window with a 8 ms overlay. The user
can choose the filtering coefficients through the Options command. Snoori evaluates the quality of the peaks displaying the
best peaks in red and the others in black.
Data journaling (use “Show results” in
“Miscellaneous menu”)
Time [ms] Time [sample] F0[Hz] Energy[dB] Phoneme[text] Word[text] {Frequency[Hz]
Bandwidth[Hz] Amplitude[dB] for each peak}
Note that energy is
calculated according to parameters given in the menu “Prosody/Energy/Energy
options”, and that F0, phoneme and word are defined only if the information
does exist.
LPC root display: Displays the LPC roots whose band
width falls below 700 Hz. The window is a 16 ms Hamming.
The order of the linear prediction can be set in the Options command.
Data journaling (use “Show results” in
“Miscellaneous menu”)
Time [ms] Time [sample] F0[Hz] Energy[dB] Phoneme[text] Word[text] {Frequency[Hz]
Bandwidth[Hz] Amplitude[dB] for each root}
Note that energy is
calculated according to parameters given in the menu “Prosody/Energy/Energy
options”, and that F0, phoneme and word are defined only if the information
does exist.
Spectral slice: Allows the display of spectral
slices. There are two FFT spectra, one LPC spectrum, one selective LPC
spectrum, and two cepstrally smoothed spectra. To
obtain the spectral slices, one simply needs to click anywhere on the
spectrogram (cf. details and options)
Klatt synthesizer: Opens the editor for files of
parameters for the Klatt synthesizer which is
accompanied by the display of the corresponding panel. This command plots and
superimposes trajectories of formants drawn with the mouse onto the spectrogram
window (cf. detailed description).
Options: Opens a panel to allow the
modification of the options of the two menu commands “Cepstral
peak display” and “LPC root display” as follows:
for the command “Cepstral
peak display”:
shift between two consecutive spectra
beginning of liftering
end of liftering
for the command “LPC root display”:
shift between two consecutive spectra
LPC
order.