tonal noise
Spatial Noise Source Identification of Tonal Noise in Turbomachinery Using the Coherence Function on a Modal Basis (AIAA 2011 2825)
... These noise source regions are a rotor-stator stage and a mode ...broadband noise floor, with tonal peaks at the BPF (blade-pass frequency) and its ...
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An experimental study of airfoil instability tonal noise with trailing edge serrations
... instability noise. Detailed aeroacoustic measurements are presented of the noise radiated by an NACA-0012 airfoil with trailing edge serrations in a low to moderate speed flow under acoustical free field ...
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Discrete tonal noise of NACA0015 airfoil at low reynolds number
... the tonal behavior of NACA series airfoil ...No tonal sound was found if fs falls below ...Airfoil tonal noise gradually decreases as angle of attack increases from α =0^° before disappearing ...
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Tonal noise of a controlled-diffusion airfoil at low angle of attack and Reynolds number
... A detailed acoustic study has been carried out on a CD airfoil in order to characterize its acoustic signature at low Reynolds numbers. Three different tonal noise regimes have been identified. The first one ...
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Modal analysis of the laminar boundary layer instability and tonal noise of an airfoil at Reynolds number 150,000
... Both noise components are related to a breathing of a recirculation bubble formed around 65-70% of the chord, and to Kelvin-Helmholtz instabilities in the separated shear layer that yield rollers that break down ...
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Generation of discrete frequency tones by the flow around an aerofoil
... the tonal output in most cases by around ...the tonal noise mechanism was deemed too sensitive to be studied using a flow intrusive technique such as a ...the tonal noise (see § ...
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Tonal generation by an airfoil at low to moderate Reynolds numbers
... of tonal noise generated is given, since the PIV measurements gave inside in the deviations of the linear ...the noise was (partly) created by the flow on the suction surface, and at higher ...
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Aeroacoustics characterization methodology applicable to turbocharger compressor
... aerodynamic noise generating mechanisms in turbo-compressors is tonal noise at blade passing frequencies, buzz-saw noise and blade tip clearance ...on tonal noise which occurs ...
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Performance Evaluation Of Active Noise Control Algorithm Using Matlab
... the noise is predictable such as a narrowband noise or a tonal noise of some discrete frequencies this constraint is not seen and hence the noise need not be sensed from the source and ...
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Analytical prediction of boundary layer ingestion noise for an integrated turbofan
... of tonal and broadband noise for a generic turbulent boundary layer interacting with the rotor of an ultra high bypass ratio fan is ...ingestion noise, the rotor-stator interaction noise of ...
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Children's cognition of tonal organisation as measured by reaction time.
... Although no significant difference was observed in mean correct reaction times between uncontextualised same and different conditions, significant differences in reaction times wer[r] ...
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Investigation of transient processes in tonal track circuits
... of tonal track circuits, the defini- tion of signal waveform at the track receiver ...the tonal track ...the tonal track circuits have been ...of tonal track circuits has been improved that ...
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Influences of particles on Vietnamese tonal Co articulation
... the tonal co-articulation more clearly, similar to the research of Brunelle [1], we carried out comparing an effect of the preceding syllable’s tone on the succeeding syllable’s ...
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Tianjin Mandarin
... its tonal aspects, especially its intriguing tone sandhi system, with few studies examining the segmental aspects (on tone, see ...and tonal aspects of Tianjin Mandarin, with main focus on the tonal ...
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Tonal Patterns in the 15th Century: A Corpus-Based Approach
... Taking the diachronic and synchronic studies together, the tendency that the second kana in Japanese and Hangeul in Korean are transcribed by Tone 4, which is a falling tone, is affected by Chinese tonal pattern, ...
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Tonal Effects on Voice Onset Time
... are tonal languages, i.e. Mandarin, Cantonese, and Taiwanese. In a tonal language, the duration of each lexical tone (which can change the meaning of a word) differs ...studying tonal languages. ...
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A Musical Expression Model Using Tonal Tension
... between Tonal Tension Structure and Musical Expression, The 2013 International Conference on Artificial Intelligence and Computational Intelligence (AICI’13), Journal of Pattern Recognition & Image Processing, ...
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Taking Tone into Account: Cognitive Neuroscientific Investigations of Mandarin Chinese Spoken Word Processing
... from tonal languages such as Mandarin Chinese, and as a result, current theories might account for speech perception in only a subset of the world’s speakers; namely, speakers of non- tonal ...distinguishes ...
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DATE: July 12, 2004 SUBJECT: Gaudet School Chiller Noise Survey Results
... a noise survey of the McQuay Air Conditioning GeneSys Air Cooled Rotary Screw Chiller system which is located on the roof of the Gaudet Middle School in Middletown, ...the noise created by the chiller ...
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Image Noise Reduction Using Linear and Nonlinear Filtering Techniques
... The output (response) of a smoothing, linear spatial filter is simply the average of the pixels con- tained in the neighborhood of the filter mask. These filters sometimes are called averaging filters. As men- tioned in ...
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