A simplified method using wind speed for the estimation of low-frequency acoustic signal under the contamination of wind noise.
スポンサーリンク
概要
- 論文の詳細を見る
This paper describes a new and simplified method for estimating exclusively objective acoustic signal levels where the observation of the signals with microphones is inevitably disturbed by wind-induced noise in the outdoor measurement of low-frequency sounds. The estimation method in the frequency domain is discussed using the information on wind speed observed in the vicinity of a microphone, mainly from an experimental viewpoint. Concretely, the power spectrum of the wind noise and that of the observed sound (composed of objective signal and wind noise) are first expressed in the form of probability distribution conditioned by the wind speed. Next, a simplified method is shown for estimating the objective signal through a spectrum estimation procedure employing the conditional means of these power spectra. The method is supported by the fundamental additive property of power spectra based on the statistical independence of the signal and the noise. The effectiveness of the proposed method is finally discussed and shown through the measurement of an objective signal of band noise with the wind speed under breezy conditions.
- 一般社団法人 日本音響学会の論文
一般社団法人 日本音響学会 | 論文
- How large is the individual difference in hearing sensitivity?: Establishment of ISO 28961 on the statistical distribution of hearing thresholds of otologically normal young persons
- Applying generation process model constraint to fundamental frequency contours generated by hidden-Markov-model-based speech synthesis
- Vocal cord vibration in the production of consonants. Observation by means of high-speed digital imaging using a fiberscope.:Observation by means of high-speed digital imaging using a fiberscope
- The early reflections of the impulse response in an auditorium.
- Multiple reflections between rigid plane panels.