18032792. SOUND SIGNAL REFINING METHOD, SOUND SIGNAL DECODING METHOD, APPARATUS THEREOF, PROGRAM, AND STORAGE MEDIUM simplified abstract (Nippon Telegraph and Telephone Corporation)
SOUND SIGNAL REFINING METHOD, SOUND SIGNAL DECODING METHOD, APPARATUS THEREOF, PROGRAM, AND STORAGE MEDIUM
Organization Name
Nippon Telegraph and Telephone Corporation
Inventor(s)
SOUND SIGNAL REFINING METHOD, SOUND SIGNAL DECODING METHOD, APPARATUS THEREOF, PROGRAM, AND STORAGE MEDIUM - A simplified explanation of the abstract
This abstract first appeared for US patent application 18032792 titled 'SOUND SIGNAL REFINING METHOD, SOUND SIGNAL DECODING METHOD, APPARATUS THEREOF, PROGRAM, AND STORAGE MEDIUM
Simplified Explanation
A sound signal purification method is described in this patent application. The method involves two steps:
1. Monaural decoded sound upmixing: This step upmixes a monaural decoded sound signal for each channel using inter-channel relationship information. It generates an n-th channel upmixed monaural decoded sound signal.
2. N-th channel signal purification: This step purifies the n-th channel upmixed monaural decoded sound signal by combining it with the n-th channel decoded sound signal. The purification weight α determines the contribution of each signal in the final sequence.
- The method involves upmixing a monaural decoded sound signal for each channel using inter-channel relationship information.
- It purifies the upmixed signal by combining it with the original decoded sound signal for each channel.
- The purification weight α determines the contribution of each signal in the final sequence.
Potential applications of this technology:
- Audio signal processing in stereo systems or audio devices.
- Enhancing the quality of monaural sound signals by upmixing and purifying them.
- Improving the audio experience in virtual reality or augmented reality applications.
Problems solved by this technology:
- Improves the quality of monaural sound signals by utilizing inter-channel relationship information.
- Enhances the audio experience by upmixing and purifying sound signals.
- Provides a method for purifying sound signals in a simple and efficient manner.
Benefits of this technology:
- Improved audio quality and clarity.
- Enhanced spatial audio experience.
- Simplified sound signal purification process.
- Compatibility with various audio devices and systems.
Original Abstract Submitted
A sound signal purification method includes a monaural decoded sound upmixing step of obtaining, an n-th channel upmixed monaural decoded sound signal {circumflex over ( )}Xthat is a signal obtained by upmixing a monaural decoded sound signal {circumflex over ( )}Xfor each channel by an upmixing process using the monaural decoded sound signal {circumflex over ( )}Xand inter-channel relationship information that is information indicating a relationship between channels of stereo, and an n-th channel signal purification step of obtaining a sequence based on a value {tilde over ( )}x(t) obtained by adding a value α×{circumflex over ( )}x(t) obtained by multiplying an n-th channel purification weight αby a sample value {circumflex over ( )}x(t) of the n-th channel upmixed monaural decoded sound signal {circumflex over ( )}Xand a value obtained by multiplying a value (1−α) obtained by subtracting the n-th channel purification weight αfrom 1 by a sample value {circumflex over ( )}x(t) of the n-th channel decoded sound signal {circumflex over ( )}X.
