Method for inhibiting pre-echoes of audio transient signals by utilizing frequency domain filtering post-processing
A transient signal and frequency domain filtering technology, which is applied in the field of audio coding, can solve problems such as consumption and audio quality degradation, and achieve the effects of suppressing pre-echo distortion, enhancing peak energy, and improving listening quality
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment Construction
[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0025] Through the experiment of post-processing the signal after encoding and decoding a typical audio transient signal (castanate sequence, mono, 44.1kHz sampling rate, 16bit sample precision, encoding rate 32kbps), it is observed that the present invention utilizes the frequency domain. The effect of pre-echo suppression of audio transient signals by filtering post-processing methods.
[0026] The specific implementation of the present invention is as follows:
[0027] At the decoding end, the audio transient signal after encoding and decoding is processed into frames, the frame length is 20ms, and the overlap between frames is 50%;
[0028] At the decoding end, it is judged whether the data frame is transient according to the encoded transient flag bit, if it is a steady frame, it will not be processed; if it is a transient frame, it will be post-pro...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.
© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com