Analyzing Vocal Behavior for Baird's Beaked Whales Based on Hilbert-Huang Transformation-2

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基本資料

Project title

Code/計畫編號

MOST103-2221-E022-015

Translated Name/計畫中文名

一種喙鯨聲樂行為希爾伯特黃時頻特徵分析-2

Project Coordinator/計畫主持人

Chin-Feng Lin

Funding Organization/主管機關

National Science and Technology Council

Co-Investigator(s)/共同執行人

張順雄

Department/Unit

National Kaohsiung University of Science and Technology, NKUST

Website

https://www.grb.gov.tw/search/planDetail?id=8355314

Year

2014

Start date/計畫起

01-08-2014

Expected Completion/計畫迄

01-07-2015

Bugetid/研究經費

467千元

ResearchField/研究領域

電子電機工程

此計劃研習貝氏喙鯨聲樂行為希爾伯特黃轉換時頻特徵。貝氏喙鯨聲樂行為包括: 點擊聲、蜂鳴點擊聲和哨聲。這些聲樂行為應用經驗模態拆解法拆解出數個本質模態函數和一個殘餘函數。我們應用希爾伯頻譜分析瞬時頻率。我們研習點擊聲、蜂鳴點擊聲和哨聲希爾伯特黃轉換時間頻率特徵關聯性。我們探討貝氏喙鯨擊聲、蜂鳴點擊聲和哨聲希爾伯特黃時頻特徵包括: (1)各個本質模態函數與殘餘函數平均值、最大值、最小值、標準差、能量、能量分佈比統計特徵；(2)各個瞬時頻率平均值、最大值、最小值、標準差；(3)各個本質模態函數在各頻帶之能量和能量分佈百分比；(4)各個本質模態函數在各個時間間隔，各頻帶之時間能量和時間能量分佈百分比；(5)各個本質模態函數和原始語音訊號各個本質模態函數間皮爾森相關係數。使我們更佳瞭解貝氏喙鯨聲樂行時頻特徵。 The project explored Berardius vocal behavior based on Hilbert-Huang transform (HHT) time-frequency characteristics. The vocal behaviors of Baird’s Beaked whales include clicks, buzze clicks, and whistles. These vocal behavior were disassembled into several intrinsic mode functions (IMFs) and a residual function by using the empirical mode decomposition (EMD) method. We applied Hilbert spectrum analysis to determine the instantaneous frequency. We investigated the relationships among the clicks, buzze clicks, and whistles in the HHT time-frequency characteristics. Our discussion on the HHT time-frequency characteristics addresses (1) the statistical characteristics of the average, maximum, minimum, standard deviation, energy, and energy distribution ratio values generated from each IMF and residual function; (2) the average, maximum, minimum, and standard deviation values generated from each instantaneous frequency; (3) the energy and energy distribution percentage of each band for every IMF; (4) the time-energy and time-energy distribution percentage generated by each band for every IMF at specific time intervals; and (5) the Pearson’s correlation coefficient between each IMF of the vocal behaviors of Bairds beaked whales, namely clicks, buzze clicks, and whistles. This study identified the correlations among the clicks, buzze clicks, and whistles in the HHT time-frequency characteristics, and provides novel information on Berardius vocal behavior.

Keyword(s)

希爾伯特黃轉換
本質模態函數
瞬時頻率
時間頻率能量分佈
皮爾森相關係數
聲樂行為
貝氏喙鯨
點擊聲
蜂鳴點擊聲
哨聲
Hilbert-Huang transform
intrinsic mode functions
instantaneous frequency
time-frequency-energy distribution
Pearson’s correlation coefficient
vocal behavior
Bairds Beaked whales
clicks
buzze clicks
whistles

DSpace CRIS

Analyzing Vocal Behavior for Baird's Beaked Whales Based on Hilbert-Huang Transformation-2

基本資料

Description