tone burst การใช้

• Tone bursts approximately 5 cycles in duration appear to be acceptable.
• High intensity tone bursts stimulate more of the basal areas.
• This tone burst would stimulate the corresponding area on the basilar membrane.
• Early systems used one tone ( commonly called " Tone Burst " ).
• For low frequency tone bursts, the displacement is largest in the apex.
• Tone burst masking techniques have been developed to overcome this upward spread of masking.
• This feature ( sometimes called " tone burst " ) is common in European systems.
• A common tone burst frequency used by many amateur radio systems in Europe is 1, 750 Hz.
• The two types of stimuli were 90 dB and 70 db tone bursts that occurred 1.1 sec apart.
• Stapells and Ruben, in 1989, demonstrated bone-conduction tone burst ABRs in infants with conductive hearing loss.
• For a low-frequency tone burst, the travelling wave velocity is greatest at the base than at the apex.
• The threshold intensity decreases by about 10 dB when the duration of a tone burst is increased from 20 to 200 ms.
• This allowed repeaters to be used with either type of signaling as the tone burst mobiles were swapped out for newer models.
• However, if a tone burst is too short in duration, it could cause spectral splatter and lose its frequency selectivity.
• In some cases, burst tones were used to select State of California agencies during the era when tone burst was in use.
• An ideal tone burst has energy at a pure-tone frequency ( e . g . 2000 Hz ) regardless of the intensity.
• Hatton, Janssen and Stapells ( 2012 ) present bone-conduction tone burst ABR results in infants with normal bone-conduction thresholds or sensorineural hearing loss.
• The counter-countermeasure was a torpedo with active sonar  a transducer was added to the torpedo nose, and the microphones were listening for its reflected periodic tone bursts.
• Also, the tone burst stimuli used in these experiments were presented with stimulus onset and offsets ramped on and off gradually in order to prevent initial turn-on and turn-off transients.
• For some high intensity tone bursts, especially 500 1000 Hz, single ( e . g ., rarefaction ) polarity results in very large amplitude stimulus artifact, making it difficult to distinguish waves from artifact.