【摘要】：發(fā)聲是動(dòng)物行為的一種體現(xiàn),而且具有豐富的生物學(xué)功能,它不僅是動(dòng)物交流的途徑,也包含動(dòng)物對(duì)內(nèi)部機(jī)體狀態(tài)和需求的反饋信息。叫聲能夠在一定程度上反饋其機(jī)體的狀況及其對(duì)環(huán)境的應(yīng)激情況,有經(jīng)驗(yàn)的畜牧工作者可以通過畜禽的叫聲了解動(dòng)物當(dāng)前的行為狀況,對(duì)動(dòng)物叫聲信號(hào)的分析可以找到與之相關(guān)的行為特征。 本文以LabVIEW2010軟件為基礎(chǔ),設(shè)計(jì)了一種母羊聲音信號(hào)處理與識(shí)別系統(tǒng),實(shí)現(xiàn)了母羊聲音信號(hào)的采集、處理、特征值提取、數(shù)據(jù)庫(kù)存儲(chǔ)和行為識(shí)別等功能。通過對(duì)母羊在不同應(yīng)激行為下的聲音信號(hào)進(jìn)行時(shí)域、頻域和聯(lián)合時(shí)頻域分析等,提取了信號(hào)持續(xù)時(shí)間、時(shí)間間隔、主峰頻率、能量集中范圍等特征參數(shù),并利用Access2007建立了相關(guān)特征值數(shù)據(jù)庫(kù)。 實(shí)驗(yàn)結(jié)果表明：母羊在不同生理和外部環(huán)境刺激下的聲音信號(hào)存在較大差異,該系統(tǒng)可以實(shí)現(xiàn)母羊在產(chǎn)羔、尋羔、饑餓等應(yīng)激行為下聲音信號(hào)的處理與特征值提取,具有界面友好、操作簡(jiǎn)單等優(yōu)點(diǎn),為進(jìn)一步研究母羊聲音信號(hào)特征提供了基礎(chǔ)。
[Abstract]:Voiceover is an embodiment of animal behavior and has rich biological functions. It is not only a way to communicate with animals, but also contains feedback information on the internal state and demand of animals. Calls can provide feedback to a certain extent on the state of their bodies and their stress on the environment. Experienced livestock workers can learn about the current behavior of animals through the calls of livestock and poultry. Analysis of animal call signals can find behavioral characteristics associated with them. In this paper, based on LabVIEW2010 software, a sound signal processing and recognition system of ewe is designed. The functions of collecting, processing, extracting characteristic value, storing database and recognizing behavior of ewe sound signal are realized. By analyzing the sound signals of ewes under different stress behaviors in time domain, frequency domain and combined time-frequency domain, the characteristic parameters such as signal duration, time interval, main peak frequency, energy concentration range and so on were extracted, and the characteristic parameters such as duration, time interval, main peak frequency and energy concentration range were extracted. The database of relevant eigenvalues is established by using Access2007. The experimental results show that the sound signals of ewe under different physiological and external stimuli have great differences. The system can realize the processing of sound signals and extraction of eigenvalues of ewe under stress behaviors such as lambing, starvation and so on. It has the advantages of friendly interface and simple operation, which provides a basis for further study of the sound signal characteristics of ewe.
【學(xué)位授予單位】：內(nèi)蒙古農(nóng)業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN912.3;S826

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