Sound Processing Device Combining Performance and Source Sounds
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Percussion instruments with silencing functions, such as silent acoustic drums and electronic drums, face challenges in reproducing the expressive power of ordinary acoustic drums due to unnatural impact sounds.
Innovation Solution
A sound processing device and method that combine performance sounds from instruments with pre-recorded PCM sound sources, using sensors to detect strike timing and combine impact sounds with supplementary sound components to enhance the expressive power of the impact sound, mimicking the sound of an ordinary acoustic drum.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If resonance circuit is used to alter impact sound, then impact sound can be modified according to strike manner, but the sound becomes unnatural and expressive power is reduced
Solution Approach 1:
The impact sound is divided into multiple time periods (first time period and second time period). In the first time period, the picked-up sound is used to capture the initial strike characteristics. In the second time period, the PCM sound source is used to provide natural sustain and decay. This segmentation allows each sound source to contribute its strengths to different phases of the sound, resolving the contradiction between adaptability and naturalness.
Solution Approach 2:
The patent merges the picked-up impact sound with the PCM sound source by combining them in the time domain. The combining processor superimposes the PCM sound source onto the picked-up sound during the second time period, creating a hybrid sound that retains the naturalness of acoustic drums while maintaining the ability to alter sound according to strike manner.
2Object-affected harmful factors
If percussion instrument mutes impact sound, then impact sound is controlled, but expressive power of performance sound is reduced
Solution Approach 1:
The PCM sound source acts as an intermediary that bridges the muted impact sound and the desired natural acoustic drum sound. Instead of directly using the muted sound or completely replacing it, the system introduces the PCM sound source as an intermediate layer that provides the natural sound characteristics while still responding to the performance operation through the picked-up sound in the first time period.
Data Source
AI summary
A sound processing device includes: a combining processor that combines a performance sound and a source sound, based on operation information corresponding to a performance operation on an instrument. The performance sound is obtained by picking up a sound generated by the performance operation on the instrument. The source sound is obtained from a sound source.