نتایج جستجو برای: acoustic feedback
تعداد نتایج: 232105 فیلتر نتایج به سال:
Most of the hearing disorders might be treatable in the early age of life. There are variant methods to test the hearing abilities of an infant; still none of them cover the whole auditory system by itself. Thus a comprehensive audiometry with high hit probability is required. Crying is the first tool of communication for an infant. Emotions, state of health or several organ functions can be ob...
We describe and evaluate an algorithm for determining decision-feedback equalizer (DFE) coefficient placements from an estimated channel response. Efficient tap placement is desirable to minimize equalizer computation in multichannel, underwater acoustic environments due to long, potentially sparse channel responses lasting hundreds of symbols or more. Although our algorithm relies on heuristic...
In this paper, we present recent developments on the HMMbased acoustic-to-articulatory inversion approch that we develop for a “visual articulatory feedback” system. In this approach, multi-stream phoneme HMMs are trained jointly on synchronous streams of acoustic and articulatory data, acquired by electromagnetic articulography (EMA). Acousticto-articulatory inversion is achieved in two steps....
A system for real-time feedback of expressive music performance is presented. The feedback is provided by using a graphical interface where acoustic cues are presented in an intuitive fashion. The graphical interface presents on the computer screen a three-dimensional object with continuously changing shape, size, position, and colour. Some of the acoustic cues were associated with the shape of...
This paper proposes an acoustic echo cancellation structure for hands-free synthetic surround sound applications, such as multiple participant conferencing, and virtual reality applications. Voice over Internet protocol (VoIP) and other virtual reality applications can benefit from the addition of 3D spatial audio generated by more than two loudspeakers. When full-duplex audio is present in a s...
Interferometric gravitational wave detectors operate with high optical power in their arms in order to achieve high shot-noise limited strain sensitivity. A significant limitation to increasing the optical power is the phenomenon of three-mode parametric instabilities, in which the laser field in the arm cavities is scattered into higher-order optical modes by acoustic modes of the cavity mirro...
diesel exhaust particles are a complex mixture of thousands of gases and fine substances that contain more than 40 different environmental contaminants. being exposed to these exhaust particles (called soot) can cause lung damage and respiratory problems. diesel particulate filters are used in many countries for mobile sources as a legal obligation to decrease harmful effect of these fine parti...
This paper presents the comparative performance analysis of two adaptive algorithms to control the attenuation of acoustic noise. Active noise control (ANC) is one of the most popular applications for adaptive filters. The basic idea behind the active control of acoustic noise is to inject a secondary sound (anti-noise) into an environment so as to cancel the primary sound using destructive int...
Second language learners may require assistance correcting their articulation of unfamiliar phonemes in order to reach the target pronunciation. If, e.g., a talking head is to provide the learner with feedback on how to change the articulation, a required first step is to be able to analyze the learner’s articulation. This paper describes how a specialized restricted acoustic-to-articulatory in...
In hands-free telephone or video conference application, there exists an acoustic feedback coupling between the loudspeaker and microphone, which creates the acoustic echo. Linear acoustic echo cancellers (AECs) are commonly used to remove this echo. However, they are unable to effectively cancel nonlinear distortions. This paper employs a Hammerstein model to describe the acoustic channel of a...
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