Two versions of the test stimuli were recorded to create two levels of speaker discrimination task difficulty: in the 'easy' version of the task, voice pitch (f0) was not fixed while in the 'difficult' version of the task, inter-speaker variations in vocal pitch were controlled by setting f0 of recorded stimuli at 220 Hz using Goldwave® software.
"You can't lower the decibel level of one speaker," she said, "so that another speaker, in this case the generics, can be heard better".
These resultsreflectthe fact that the speech volume levels of Speakers 2 and 3 are lower than Speaker 1. Table 5 Speaker activity detection results.
The harsh voice quality tends to appear when the excitement level of the speaker increases.
Pon-Barry and Shieber propose the use of phrase-level prosodic features for inferring the level of a speaker's self-reported uncertainty.
For example, in some animals, no ABR response could be evoked for stimulus frequencies above 19 kHz, indicating a larger threshold shift than the difference between the sound level for the baseline ABR threshold and the maximum sound level of the speaker.
For sound changes in progress, there is usually a high level of inter-speaker variability, as individual speakers might be at different stages of a sound change (Janson 1983).
In cities such as New York, a whole scale of speech variation can be found to correlate with the social status and educational level of the speakers.
But his arguable musical peak as well as possibly his most-loved song by the EDC-set was 2011's "LEDC-set wasong that barely scraped the Billboard Top 40 upon release but achieved a level of festival-speaker ubiquitousness.
The BoomSound stereo system is controlled by two five-volt NXP TFA9887 integrated circuits combining NXP's CoolFlux audio DSP, a class-D amplifier with current sensing, and a DC-to-DC converter to boost the output level of micro-speakers up to five times (up to 2.6 W RMS) without damaging the driver.
