CODING OF DENSE TRANSIENT EVENTS WITH COMPANDING
Patent Information
- Application Number
- DE602019071276
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2019-08-21
- Publication Date
- 2025-06-18
- Estimated Expiration
- 2039-08-21
AI Technical Summary
Existing audio processing techniques struggle to effectively reduce quantization noise, particularly in transient signals like applause, fire crackling, or rain, due to the difficulty in predicting the appropriate companding technique based on signal content.
A signal-dependent companding system that adapts companding based on detected signal content, using a detector to differentiate between speech, applause, and tonal audio content, and applying appropriate companding exponents to improve sound quality for dense transient signals.
The system improves sound quality for challenging audio signals by minimizing quantization noise, particularly in dense transient signals, with minimal overhead in audio encoding, achieving better quality sound with only one additional bit in the companding control data structure.