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2 sound signal generation by analysis of narrow band

Shiori Endo
Shiori Endo

This document outlines a method for generating environmental sounds at lower cost and with less time and labor than traditional methods. It analyzes the sound signal of a glass bottle being struck by filtering it into different frequency bands. It then generates a new sound using a sine wave model based on 5 important component sounds from the analyzed glass bottle sound, either with an initial phase of 0 or a random initial phase. This new method allows for environmental sound generation in a more efficient manner.

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2 sound signal generation by analysis of narrow band
Outline 0 Background 0 Motivation and Problem Statement 0 Research Processes 0 Results 0 Analysis of sound signal 0 Generation of sound signal 0 Summary
Motivation and Problem Statement 0 An environmental sound is necessity in many fields. 0 However, these creating methods require too much cost, time and labor. To reduce the cost, the time, and the labor. 0 A new method of environmental sound generation is required. Purpose: To find important factors of sound generation.
Research Processes 0 We do processing of filter bank for sound signal. 0 We require phase and amplitude of analytical signal every band. 0 We generate sound using sine-wave model.
Analysis: Filter bank processing 0 Sound source : Impact to a glass bottle by a wood stick. 0 The sound signals are divided into narrow frequency bands using filter bank. 0 Band-pass filter is used. 0 Bandwidth is 100Hz.
Analysis: Confined Component 0 Using bands 0 37, 38, 39, 65 and 66 bands in 240 bands Glass-Amplitude
Generation: Generative Sound 0 鐚Fundamental Tone 0 ￥Determinate of 5 Component Sounds 0 鐚Straight-line Approximation 5 Component Sounds and Initial Phase of 0 0 ｏStraight-line Approximation 5 Component Sounds and Initial Phase of Random 7/9
Summary 0 We generate sound by 5 component sounds. 0 However, initial phase of 0 and random sound is difference in former determinate of 5 component sounds.

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2 sound signal generation by analysis of narrow band

  • 2. Outline 0 Background 0 Motivation and Problem Statement 0 Research Processes 0 Results 0 Analysis of sound signal 0 Generation of sound signal 0 Summary
  • 3. Motivation and Problem Statement 0 An environmental sound is necessity in many fields. 0 However, these creating methods require too much cost, time and labor. To reduce the cost, the time, and the labor. 0 A new method of environmental sound generation is required. Purpose: To find important factors of sound generation.
  • 4. Research Processes 0 We do processing of filter bank for sound signal. 0 We require phase and amplitude of analytical signal every band. 0 We generate sound using sine-wave model.
  • 5. Analysis: Filter bank processing 0 Sound source : Impact to a glass bottle by a wood stick. 0 The sound signals are divided into narrow frequency bands using filter bank. 0 Band-pass filter is used. 0 Bandwidth is 100Hz.
  • 6. Analysis: Confined Component 0 Using bands 0 37, 38, 39, 65 and 66 bands in 240 bands Glass-Amplitude
  • 7. Generation: Generative Sound 0 鐚Fundamental Tone 0 ￥Determinate of 5 Component Sounds 0 鐚Straight-line Approximation 5 Component Sounds and Initial Phase of 0 0 ｏStraight-line Approximation 5 Component Sounds and Initial Phase of Random 7/9
  • 8. Summary 0 We generate sound by 5 component sounds. 0 However, initial phase of 0 and random sound is difference in former determinate of 5 component sounds.